bluuebunny/crossref_metadata_2025 huggingface dataset:
The Research of the Tool Magazine Control System Based on PLC
Authors: Zhang Yue Ming , Yang Bo Jin , Wang Zhe , Mu Hong Ming , Yang Yu
Published: April 2014

The tool magazine and automatic tool changer are important functional components, which actual performance affects the efficiency of machining center directly. BT50-32L produced by ZhongHuan (Group) is the research object in this paper, it introduces the application of the control system from aspects of the design of overall program, the control of tool magazine and automatic tool changer. The core of the tool magazine control system is PLC, which can select the nearest tool and achieve the control of tool position, the flip of tool holder and the tool changer of manipulator during the operation. The communication of PC HMI and PLC achieve the simulation and control of the operational status. This system is certified to meet the application requirements with the stable performance, simple structure, easy operation and the rapid and accurate action.
The Research on the Form Error Margin of the Auto Test System Design
Authors: Yu Wei Li
Published: April 2014

In the machine manufacture industry, the on-line test technique applies very extensively, the particularly automatic test technique is more outstanding. This article with the form error margin for example, designed a set of simple on-line test system to raise the accuracy of the machine product examination, assurance product quality, decline low cost depletion.
Analysis and Design of the Profiled Bar Cantilever Scaffold with the Hoisting Unloading Wire Ropes
Authors: Wang Tan , Yin Kun , Dou Li Jun
Published: April 2014

In this paper, a model that the profiled bar cantilever scaffold with the hoisting unloading rope is created, utilizing the software sap2000.Analyzing of load-bearing of very parts of the scaffold. Calculating bearing capacity of the hoisting wire rope and the bearing capacity of hoisting rings. Put forward the design method of unloading wire rope and detailed construction requirements solution of scaffold.
Effect of Ce on Palladium Deposition by Electroless Plating
Authors: Zhao Hai , Liu Jun Qing
Published: April 2014

Palladium composite membranes have been prepared using an electroless plating technique with rare earth element of Ce was added into the plating solution. The effects of the rare earth element on the Pd deposition rate, plating temperature and H2 permeation flux were studied. The experimental results show that the additions of mixed rare earth element of Ce into the plating solution can increase Pd deposition rates by 15%. The resistance to sulfidation was examined and the membrane sulfur resistance was confirmed by exposure to a combined gas of H2 and H2S.
Keywords: hydrogen utilized; electroless plating; inorganic membrance; Cerium
A Local CSRBF Interpolation Algorithm Based on Partition Acceleration
Authors: Wang Ji Zhen , Chen Hai Bo
Published: April 2014

Radial basis function (RBF) interpolation algorithm for data transfer on coupling interface is derived from the shape function, and the global D-Lanczos (GLDL) method is introduced to solve the displacement transfer matrix. In order to improve the computational efficiency, a local compactly supported RBF (CSRBF) interpolation algorithm is proposed based on the partition acceleration treatment, and a comparison of the algorithmic complexity is made among the global Multi-Quadrics (MQ), CSRBF and the local CSRBF. Numerical test shows the significant shortening of CPU time by using the local CSRBF interpolation algorithm.
A Method to Update the Simulink Blocks Automatically
Authors: Ying Zhi Ding , Hou Wei
Published: April 2014

As a powerful simulation tool, simulink being increasingly used in modern design, yet one distinctive feature of modern design is that they need to be updated frequently [1,2]. Take the control strategy blocks for example, the paper present a method to update the blocks including mdl files and m files automatically by writing script using Matlab. After the update work it will record the work log automatically, during the update process it also checks the potential errors made by human to make sure the update work is correct. It is a convenient and reliable method to update the simulink blocks.
An Analysis of the Middle Voice in Advertising English
Authors: Ying Jian
Published: April 2014

This paper discusses the Middle Voice in the framework of Systemic-functional Grammar, which is employed to analyze and unpack advertising English. Taking the Middle Voice as a kind of strategic choice, the paper attempts to show how and why it contributes a lot to realizing the communicative purposes in advertising English.
Key words: Middle Voice; advertising English; functions.
An Optimization Algorithm Based on Job Shop Scheduling with Fuzzy Goals
Authors: Dai Qing Ling , Zhang Sheng Bo
Published: April 2014

The mathematical model was built up for the job shop scheduling problem at first. With following the fuzzy submit time of customer requirement an improved genetic algorithm of fuzzy objective scheduling method was put forward which took the minimum production cost as the objective function. It solved the faults of the chromosomes in genetic algorithm is difficult to accurately express the complex optimization problem solution and determined the more suitable multilayer encoding and operating mode. The simulation results show that this algorithm can be applied to fuzzy object shop scheduling optimization problem, which can ensure the machine's load balance and meet the requirements of the customer delivery date.
Based on CIMS Application of Small and Medium-Sized Enterprise Information System Integration
Authors: Wu Yao Hua
Published: April 2014

With the rapid development of market economy, enterprises face more intense market competition, especially manufacturing enterprises face huge challenges. How to shorten product time to market, improve product quality, reduce costs and provide high quality service is the enterprise in competition at the core of the problem. The development of CIMS conform to the trend of the development of manufacturing and computer today. In this paper, the information integration system based on CIMS application prospect in small and medium enterprises are analyzed and predicted, and the domestic small and medium-sized enterprises as an example of application in the enterprise information integration system based on CIMS problems are analyzed.
Based on Digital Image Forensics Edge Characteristic Morphological Filtering Technology
Authors: Li Su Ying
Published: April 2014

For the number of buildings in the most commonly forged composite image blur operation, this paper presents an image forensics morphological filtering algorithm based on edge characteristics; The method uses homomorphic filtering and morphological filtering method to enhance the operation of the fuzzy image edge analyzed defocus blur and artificial blurred boundary characteristics, the use of artificial edge blur and defocus blur characteristics achieved for passive blind digital image forgery evidence; experiments show that this method can effectively detect forged digital images fuzzy operation marks and the partial image has been able to accurately locate the fuzzy operation.
Microphone High-Temperature Test System Development Based on PID Control
Authors: Zhao Li Yan
Published: April 2014

With PID as its control center, this system overcomes the uncontrol of temperature, lower efficiency, difficult operation and other drawbacks occurring in precious microphone high-temperature test system. Characterized by excellent adaptability, automatic heating and constant temperature function, and simple operation, the high-temperature test system can meet the special requirements during microphone high temperature operation, evaluate the phase, frequency response, background noise and other product indexes in a high temperature ambient, and possess a very high marketing application value.
Study on Artificial Neural Networks to Identify Sedimentary Microfacies
Authors: Liu Wei Fu , Liu Shuang Long , Sun Li Xin
Published: April 2014

Based on a number of stratigraphic sedimentary information included in log data, application of the Artificial Neural Network to identify sedimentary microfacies from well logging data can complete the series auto-interpreting. The application can improve the auto-interpreting accuracy and make us get more satisfied results. Ten parameters from the well logging curves are selected for to describing their shape characteristics when the deposition patterns of 8 in gas-bearing formation of Upper Paleozoic group, Ordos basin are studied. Effective parameters were selected on the basis of cores, and based on artificial neural network pattern recognition technique; the sedimentary microfacies of well cross section were auto-interpreted. About 300 wells and the results were interpreted by using the software. The software will be fit for the researchers who have the experiences of geological interpretation and some backgrounds of local geology.
Technology Strategies of Controlling Machining Deformation for NC Milling of Thin-Walled Frame Component Parts
Authors: Liu Hong , Luo Li Li , Zhang Yong
Published: April 2014

In this paper, through the characteristics analysis to an example of a thin-walled frame component part in a large precision instrument, some reasonable technology strategies of controlling machining deformation are proposed that included optimizing process route, designing rational clamping method and fixture layout, choosing preferably cutting tool, programming optimal cutting method and tool path, etc.. The way of machining large thin-walled frame component parts in the ordinary NC milling machine is achieved. And it effectively reduces the machining deformation. This way provides guiding and reference for NC milling of the similar thin-walled frame component parts.
The Overall Design of Frequency Conversion Water Supply Control System Based on PLC
Authors: Bu Tie Wei
Published: April 2014

the overview of the development of automatic water supply control system, according to the national water quality standard, process water plant and the system analyses the status in our application, summarizes the design principle of the system, put forward the concrete and feasible technical route and frequency of water supply system based on the overall design scheme of PLC, to determine the design process for the system, the design and Realization of the system provides a theoretical basis and technical support.
Detection and Application of Hull Weld Quality Based on MATLAB Image Processing
Authors: Chen Kai Jun
Published: April 2014

Proposed on the basis of nondestructive testing technology, such as ultrasonic testing and X-ray detecting, image processing of hull welding based on MATLAB is a simple detecting method to detect the quality of welding. By image processing, physical dimensions, such as circumferences and shapes, as well as the intensity and texture features of welds can be concluded. Then, through numerical analysis, quality problems, including porosities, slags, undercuts, overlaps, welding defects and others, if exist, can be determined. This method decreases the cost and reduces the harm to people’s health. Experimental results showed that the detecting system can calculate and determine the major features of the welds effectively and accurately, and possesses good practical value.
Computer Technology and Exploration of a Russian Teaching Aid in Russian Teaching
Authors: Gao Jie
Published: April 2014

In order to arouse the interesting of Russian teaching in Russian class, a T type teaching aid was developed based on SolidWorks2012 in this paper. The design detail for desinging this teaching aid is discussed, and the distribution of the stress, strain and displacement is investigated under a 10N load. The results present that the node number of the T plate teaching aid is approximately 11356, and the grid unit number is 1226. The max stress and strain is 45.678 N/mm2 and 1.642×10-6.
The Application of NC Simulation in NC Automatic Programming
Authors: Bao Mei Lan
Published: April 2014

Our country is manufacturing industry power in the world, NC machining is used in mechanical manufacturing industry widesprealy. With the development of manufacturing industry, NC machining strides forward super-speed machining step by step. In order to achieve the machining requirement of speediness and high-precision of complex parts, automatic programming becomes the main programming pattern of NC programming. Ensuring validity and optimizing of NC programs is fundamental demand of automatic programming. So as to test validity and optimizing of NC programs, NC simulation is obtained widespread use in the process of programming.
Analysis on Optimization of Dividing Construction Bid-Section Based on Safety Risks
Authors: Zhu Zhong Rong , Li Xin Zhe , Wu Zheng Song
Published: April 2014

The geological disaster prevention project is to bring the unstable and unsafe disaster bodies under control, so construction safety risk prevention of this kind of projects is of great importance. Project bid-section division is closely related to the degree of project dispersion, the frequency of monitoring visits and the project duration, and it will also have influence on project construction safety risk. According to the characteristics of geological disaster prevention projects, the paper makes a quantitative analysis of the factors that influence the construction safety. The proposed bid-section division programs are calculated and analyzed by using fuzzy entropy weight model of group decision-making, so as to determine the optimal bid-section division program based on safety risk prevention.
Research of Project Construction Cost Forecast Based on the Reliability
Authors: Hao Yan E
Published: April 2014

The cost is one of the four major targets for the project management; this paper introduces the construction cost reliability as an indicator to measure the management level of project cost. Through the statistic analysis of historical data, the comparative analysis about the actual cost data and original planned cost for each unit of work in the finished project is conducted to confirm the probability distribution of cost overrun or cost saving and predict the reliability of cost, and this is applied in a real project case.
Research on Model Calculating Depth of Environmental Vibration Caused by the Ground Rail Traffic Load
Authors: Zheng Xin , Zhang Yan , Tao Xia Xin , Wang Fu Tong , Xie Li Li
Published: April 2014

In order to reduce the computation amount and to ensure to compute environmental vibrations caused by ground rail traffic load comprehensively and accurately, calculating depth of the model for the ground was researched. The ground is simplified to a single layer elastic half-space model, and the dynamic Green's function of vertical displacement on the surface of the model was derived by using transfer matrix within frequency wave-number domain. vibration displacement amplitude in the range of 10 to 60 m away from the surface of the model to the vibration center were compared with different thickness of model and the elastic half-space model caused by the ground rail traffic load. It showed that the calculation results are quite different with different cover thickness, but with the increase of the cover thickness of layer, the results of single layer elastic half-space model approached the elastic half-space model. When the cover lager thickness reached to 25m, the difference of the magnitude was less than 5%.
The Architectural Space Analysis of SOHO
Authors: Xie Ke , Shen Hui
Published: April 2014

The coming of network era makes home office style become quiet popular.This paper, through analysing architecture space of SOHO ,probes its form and sills in two aspects of interior space and communication space ,summarizes SOHO's feature and prospects its future development.
The Research and Application of Hydraulic Compound Energy-Saving Hydraulic System
Authors: Sun Hong
Published: April 2014

The industry has a rapid development with the rapid development of social economy. With the development of the industry the energy problems for the world have become the main concern problems in development now. The oil resource is becoming more and more important Under the situation of world energy reducing .And the world is more and more demanded for energy saving. Hydraulic technology as a basic technology in the machinery industry, energy issues also attracted great attention, and thus appeared a lot of energy saving system and hydraulic components etc.
The Research of the Suitability of the Product Design and the Plastic Technique
Authors: Shu Li Xiang
Published: April 2014

Integrating the internal and external factors of product design, this paper explore the way of the suitability of the product design and the plastic technique, and build the evaluation system of suitability of the selection of plastic technique in product design.
Pecan Oil Influences Learning and Memory and NF-κB Levels in the Hippocampus of Rats after MWM Test
Authors: Li Ying , Zhao Xing Yu , Jin Xue Lian , Sun Guo Qing , Liu Song , Luo Zheng Li
Published: April 2014

We assessed the effectiveness and mechanism of action of Pecan oil on learning and memory and NF-κB levels in the hippocampus of rats after Morris water maze (MWM test). Pecan oil (200,400 or 800 mg/kg/d) were administered by intragavage once daily for 14 consecutive days. The Morris water maze test was used to evaluate the ability of Pecan oil to increase learning and memory impairment. The levels of NF-κB in hippocampus of rats were detected by Westernblot after MWM test. Compared to untreated controls (P<0.01), MWM could be prolonged after Pecan oil treatment (P<0.05 for low and intermediate dose groups). Westernblot analysis showed that the protein expression of NF-κB was decreased in different concentration Pecan oil(P<0.05 and P<0.01, respectively). The results suggest that Pecan oil is effective in improving the learning and memory in rats, the mechanism of which may be related NF-κB expression decreasing.
Microstructure and Basic Properties of Domestic Butyl Rubber 1751
Authors: Ding Nai Xiu , Zuo Pei Yan , Jia Yi , Wang Li Li , Wang Hai Tao
Published: April 2014

The characterization of microstructure and basic properties of domestic butyl rubber 1751 ( IIR 1751) was performed with different testing , such as 1H-NMR spectrum, gel permeation chromatography, dynamic mechanical analysis, thermal gravimetric analysis and differential scanning calorimeter. And the comparison with Butyl 268 and Butyl 301 was made. The results showed that IIR1751 had a narrower molecular mass distribution, lower number-average molecular mass and lower weight-average molecular mass. The unsaturation degree of IIR1751 was close to Butyl 268 and Butyl 301. Its thermal stability was higher than the other and its ash content and volatile matter content was lower. Its glass transition temperature was same to Butyl 268’s, which was slightly higher than the Butyl 301. Dispersion of carbon black in IIR1751 vulcanizates was poor, but IIR1751 vulcanizates had good processing property, had a longer scorch safety period and fast curing rate. Its fatigue performance was good and its mechanical properties can achieve a better balance.
Novel Ionic Polymer-Metal Composite Employing Sulfonated Polyimide as Ion-Exchange Membrane
Authors: Li Yu Han , Jin Ri Zhe
Published: April 2014

Novel ionic polymer-metal composites (IPMC) based on sulfonated polyimide (SPI) was firstly developed by employing a more convenient, time-saving and effective electroless plating method. Their overall structure and the distribution of metal particles in the membranes were examined by scanning electron microscopy (SEM) attached with energy dispersive X-ray spectrometer (EDS). The actuation of the prepared IPMC was evaluated. The analytical results confirmed that platinum are successfully deposited on the membrane. Under DC voltage excitation, the IPMC undergo larger displacement compared with Nafion-based actuators. The larger displacement of the IPMC was considered to be the result of the higher concentration of sulfonyl groups, larger ion exchange capacity, and consequent larger volume of water moving.
Study on Oxygen-Enriched Combustion Application Technology
Authors: Liang Pan
Published: April 2014

Currently, the Oxygen-enriched combustion technology of boiler is gradually developing and its application dimensions and area are continuously expanding. The paper discussed the background and significance of oxygen-enriched technology, and described its theatrical basis. Introducing the developing course and instance of membrane method for oxygen making and oxygen-enriched combustion technology, the paper prospecting the technology, pointed out that oxygen-enriched combustion technology would has wide foreground at energy saving and environment protection.
Surface Modification and Properties Analysis of Shell Powder with Sodium Stearate Surface Modifier
Authors: Yang Zi Ming , Li Pu Wang , Peng Zheng , Gu Xiao Chuan , Kong Ling Xue , Li Si Dong
Published: April 2014

In this study, shell powder was modified by sodium stearate surface modifier for improving the compatibility of SP with polymer materials. The surface modifiers influence on the physical and chemical properties of SP were studied by scanning electron microscope (SEM), fourier infrared spectrum (FT-IR), surface contact angle meter, XRD diffraction analysis meter and other modern instruments and analysis method. The results showed that the surface modifier was successfully coupled to the shell powder surface. After surface modifier modification, the interfacial compatibility of the shell powder with polymer materials was effectively improved. The contact angle of shell powder surface increased from 73.5 ° to 110.8 ° , along with the dosage of sodium stearate surface modifier was 4.0%. All results suggested that modified shell powder is promising for using as a reinforcement filler in polymer materials.
Synthesis, Characterization and Antibacterial Activity of Chitosan/TiO2 Microspheres
Authors: Qi Wen Ying , Chen Sai Sai , Yang Dan , Li Qin Long , Wu Xiao Rong , Lai Yu Zhen , Yin Wen Qing , Yu Chen Bing
Published: April 2014

In this study, chitosan (CS)/titanium dioxide (TiO2) microspheres with different nanoTiO2 content were obtained by suspension cross-linking technique and characterized by FT-IR and SEM. The strong peak of C=N stretching vibrations at 1641 cm-1 were found which demonstrated that amino groups of CS reacted with aldehyde group of glutaraldehyde. SEM photographs showed that the CS/TiO2 microspheres were spherical, and the size of the CS/TiO2 microspheres ranging from 50 to 170 μm was analyzed with the software of Image J. The entrapment efficiency of the CS/TiO2 microspheres was up to 67.7%. Compared with CS, CS/TiO2 microspheres had better antibacterial activity against S. aureus and E. coli with a MIC value of 0.0125%.
Three-Dimensional Solid Design in Duplex Mode of Application of the Composite
Authors: Diao Xi Lian
Published: April 2014

To strengthen the roof beams of a model duplex composite mold design process, for example, to explore the data in the IMAN UG design platform using three-dimensional solid steps, and introduces a three-dimensional solid design and development of applications for three-dimensional solid design in contemporary mold enterprise business without machining and assembly diagram programming situation.
Application of Low-Strain Dynamic Detection to Concrete Piles
Authors: Deng Guo Dong , Zhang Jia Sheng , Liang Wei Qun , Meng Fei , Shi Xiong
Published: April 2014

The concept and the testing method of dynamic pile testing and the rationale, preparation, data collection, and data processing of the low-strain reflection wave method are described. In addition, some of the disadvantages inherent to low-strain detection and experiences related to the correlation between detection data and pile realities are discussed.
The Application of LIFEHOPE Military Fire Blanket for Energy-Saving of Glass Furnace
Authors: Rong Chen , Chan David
Published: April 2014

This paper introduce the basic characteristics of LIFEHOPE Military Fire Blanket, as for independent intellectual property rights new material, we use it is heat insulation, heat preservation to save energy for glass furnace etc. Meanwhile we will explain and put forward the meaning of application of LIFEHOPE military fire Blanket for high energy consumption and heavy pollution industry and enterprise.
Experimental Study on Diffusion of Vaporous Hydrogen Peroxide
Authors: Zhou Kan , Liang Ting , Gu Jin , Ren Hong Chun , Li Shu Guang
Published: April 2014

In this paper, the concentration of Vaporous hydrogen peroxide was measured by titanium oxalate method in different location of 40 feet container. Results show that with the increase of the distance between the measurement locations and vapor outlet, the concentrations of vaporous hydrogen peroxide gradually reduce, longer duration of decontamination, the concentration is slowly rising. Vaporous hydrogen peroxide can effectively diffuse in the contained space, it can be used for the internal space decontamination.
Advance Control Experiment of Vibration Machine with High Vibration Intensity Based on SCM – Dynamics Characteristics and Advanced Control
Authors: Yang Xiao Lan , Liu Ji Feng , Si Meng Nan , Li Jia Wei , Huang Biao
Published: April 2014

The vibration-stress field could be formed by high vibration intensity in vibration machine to improve the ability of the collision, shock, shear and extrusion for the system, and it also can avoid plugging screen for vibration screening machine, which could make for solving some special requirements of the vibration machine. To research the vibration machines strongly nonlinear and high vibration intensity characteristic such as certain excitation and uncertain response, the vibration machine with its double-mass is built, and its vibration exciter uses two partial blocks as vibration motor. In addition, dynamic vibration differential equation is established. To achieve high vibration intensity results based on the vibration machines safe working, the advanced control based on the SCM and Intelligent frequency conversion is put forward, and the advanced control system with its host computer, frequency converter, SCM, charge-amplifier, sensor and the vibration machine is been established.
Biological Activity Studies on a Copper(II) Complex with Taurine Schiff Base
Authors: Li Mei , Yang Guo Ping , Liang Hong
Published: April 2014

A new material of copper(II) complex (complex 1) with taurine Schiff base has been synthesized and characterized by elemental analysis, ESI-MS and IR spectra. 1 was tested against HepG2 cell lines with IC50 values of 12.89 μM. With the concentrations of 1 increasing, the population of apoptosis was 1.28% for 0 μM, 24.4% for 10 μM and 47.9% for 20μM, and the population of G2 phase was 19.2% for 0 μM, 34.4% for 10 μM and 42.9% for 20μM, respectively. 1 showed significant cytotoxic activity against HepG2 cell lines.
Characteristics of Magnetic Susceptibility of the Cores in Yinmin Mining Area
Authors: Lu Jia , Fang Wei Xuan
Published: April 2014

Through the work of measuring magnetic susceptibility of the cores in Yinmin mining area, Yunnan, one can draw a conclusion that different strata have different magnetic susceptibility, and variations of magentic susceptibility as a whole have significant changes, concerned primarily with mafic ferruginous lava, iron ore, ferruginous dolomite and fine grained diabase in the Luoxue Group and the Yinmin Group. The study of magnetic susceptibility of the rocks is not only relevant to magnetic prospecting and the boreholetricomponent magnetic, but also a rapid and effective means of geological exploration for the iron-oxide copper gold (IOCG) deposit in Yinmin mining area.
Dynamic Properties of NiTi Shape Memory Alloy under Combined Compression-Shear Loading
Authors: Song Qing Zheng , Tang Zhi Ping
Published: April 2014

The desired compression-shear loading were applied by the beveled ends with different angles, and this new technique based on split Hopkinson pressure bar can be used to investigate the dynamic response of materials. A series of experiments of NiTi shape memory alloy were performed at different impact velocities and different loading angles, and the dynamic equivalent pressure curves were given. The initial phase transition points under different impact velocities were plotted on σ-τ stresss space, and the phase transition surfaces predicted by a dynamic phase transition criterion were given.
Improvement of Hydraulic System for Billet Continuous Casting Shear
Authors: Yan Chao , Guan Hui
Published: April 2014

This article introduced the principle of hydraulic system for billet continuous casting shear in Ma-steel. Analyzed the problem that the hydraulic system flow was not enough to meet manufacture need during commissioning. put forward the solution that accumulators group was made use to add hydraulic system flow according to manufacture actual fact,resolved the practical problem and obtained the satisfactory effect.
Numerical Simulation of Hot Stamping of Front Bumper
Authors: Guo Yi Hui , Ma Ming Tu , Zhang Yi Sheng , Zhou Dian Wu , Song Lei Feng
Published: April 2014

LS-DYNA software was adopted to conduct research of numerical simulation on hot stamping of front bumper to calculate the temperature field distribution, stress field distribution, FLD figure and etc. of parts in the course of hot stamping so as to predict and analyze the formability of parts. ProCAST software was employed to conduct research of numerical simulation on solid quenching course concerning hot stamping to calculate temperature field distribution of tools and component of multiple stamping cycles; Based on the simulation,the hot stamping mould was developed,and the front bumper components of hot forming were stamped, Compared the test results with the simulation, both the results coincide basically with same variation trend .Results obtain from numerical simulation can provide significant reference value to hot stamping part design, formability predication and tools cooling channel system design.
Position Sliding Mode Control of Manipulator Joint Based on Genetic Algorithm
Authors: Zhou Tao , Liang Xi Feng
Published: April 2014

In order to improve the control performance of position trajectory tracking of manipulator joint, a sliding mode control (SMC) method based on genetic algorithm(GA) is proposed in this paper. In this method, the performance of SMC algorithm is improved through adjusting the parameters of switching function and exponential approach law by genetic algorithm. The method was applied to accomplish the precise position control of manipulator joint. Simulation experiments show that the response time in manipulator joint control system by the SMC method based on GA is reduced 0.62s than the ordinary SMC algorithm. And the system restore stability time with a load change is also reduced 0.7s. External disturbance has no significant effect on the control system. The chattering of controller output is significantly reduced.
Research on Control Program Design of Variable Speed Hydraulic System
Authors: Wang Yuan Tao , Zhou Xin
Published: April 2014

In this paper, PLC and configuration technology has been applied to the variable speed hydraulic technology. So in the future, monitoring system of variable speed hydraulic technology has been widely used. This thesis of variable speed hydraulic test stand uses PLC as the controller and the century star configuration software as the control software. According to the characteristics of variable speed hydraulic test bench and monitoring system, the monitoring system hardware and software are analyzed in detail. A set of variable speed hydraulic test station monitoring system has been designed.
Round Head Screw Axis NC Machining Process Analysis
Authors: Diao Xi Lian
Published: April 2014

The ball screw shaft part of the shaft is typical of one of the parts is difficult to process, the current CNC machining parts with high precision is required to solve such a circular arc surface, the most effective processing tapered threaded surface and the cylindrical surface methods. Aiming at the characteristics of round threaded shaft, analyzed the methods and procedures CNC lathe machining parts, and gives a complete NC program. Program is produced in Dalian CKA6132 CNC lathe written.
Study of Stability of Surrounding Rock and Structural Characteristics of Large Long Corridor Surge Chamber
Authors: Yin Jian Feng
Published: April 2014

Large long corridor surge chambers have unique form. As a typical hydropower underground structure, its stability of surrounding rock in the process of excavation and force features of structure are affected by particular structure form. Take a hydropower station for example, by using the finite difference method, we simulated two different schemes in process of excavation and analyzed its displacement, stress, plastic zone of surrounding rock as well as force feature of structure. Appropriate law of large long corridor surge chamber during excavation is summarized which will provide the reference for the similar project.
TDV10 Type Vacuum Circuit Breaker Electromagnetic Operating Mechanism Design
Authors: Ma Shao Hua , Liu Chuang
Published: April 2014

TDV10 upright type vacuum circuit breaker is mainly used for electric locomotive running in the process of main circuit disconnection and connection, and also applied in the overload protection and short circuit protection.And TDV10 type operating mechanism is pneumatic, pneumatic structure because of its complex structure, cylinder work noise, air leakage risk, now a electromagnetic operating mechanism is designed to replace the pneumatic institution.TDV10 type circuit breaker through analysis the principle and performance parameters of the comparison, put forward the feasibility in theory, and gives the basic design of the electromagnetic mechanism and external circuit.Using Ansoft software design agency for static and dynamic simulation analysis of magnetic field. Through the analysis and comparison of the curve of each parameter, verify the feasibility of the design.
The Wavelet De-Noising of Vibration Signals for Aircraft Rolling Bearings
Authors: Cui Feng Kui , Lv Fei Fei , Wang Xiao Qiang , Zhang Dong Ying
Published: April 2014

Aiming at air rolling bearing vibration signals low SNR and nonstationary characteristics, taking wavelet theory and principles of the wavelet noise reduction for air vibration signals of rolling bearings to conduct wavelet noise reduction processing.By means of the simulation signal wavelet noise reduction processing and fast Fourier transform, the contrast analysis of the vibration signals after wavelet noise reduction and FFT transform and the original signal directly to the result of the fast Fourier transform, and thus prove the validity of the vibration signal wavelet noise reduction. Through the actual vibration signals of bearing conductnoise reduction processing, the result is a further indication of the superiority of wavelet noise reduction in eliminate noise interference.
Design of Isolation PWM Power Amplifier with Motor Direction Control Signal
Authors: Yu Hong Bing , Qiao Ya , Xu Shi Min , Chu Fei Huang
Published: April 2014

The design of single-stage PWM power amplifier with direction control signal is introduced. Proper grid drive circuit is designed to reduce vibration and enhance efficiency. Through the design of signal and power isolated circuit to enhance the capacity of anti-jamming and the security. This paper elaborates on technical difficulties met in the development of the PWM power amplifier and its solution.
Grinding Hyperboloid Part by Bending Method
Authors: Shang Chun Min , Zhang Dong Mei , Yang Jian Dong
Published: April 2014

In view of the machining difficult problem of hyperboloid, a new method is presented that high speed lapping hyperboloid parts using the bended lapping tool, and the principle of high speed lapping by the bending method is discussed. The mathematical model of bended lapping tool has been established using mechanics and higher mathematics, and the expression of width function of lapping tool is deduced. Analysis of the calculating example indicated that this method is possible to design the needed lapping tool. The bending experiment of lapping tool has confirmed the feasibility using this method, the biggest error of face shape was 1.0038μm, the face shape precision can satisfy the majority part request.
Matching Research on a Parallel Hybrid Power System
Authors: Ji Wen , Li Qiang , Chen Zhong You
Published: April 2014

A typical parallel hybrid power system is briefly analyzed, and also its configuration is schematically depicted, on this basis some type of parallel hybrid power system is matched and analyzed in detail, with the foundation of vehicle transmission theory , calculation process given step by step, illustrated by a practical driving vehicle.
The Reductive Method of Copper and the Optimization of Oxygen Dosing in the Reduction Tube of Vario EL III Elemental Analyzer
Authors: Xiao Yi Nong , Niu Fei , Fu Shi Feng
Published: April 2014

It is discribed that the reductive method of copper in the reduction tube and how to optimize oxygen dosing of Vario EL III elemental analyzer.
Research on a Novel Balance Transformer with Asymmetrical Windings
Authors: Zhu Chu , Li Yong Sheng
Published: April 2014

For problems of zero sequence current and negative sequence current of traction transformer in Electrified Railway, a novel balance transformer with asymmetrical windings was presented. By a systematic analysis method based on the magnetic force balance equations, winding connection equations, output-port equations and voltage transfer equations, the current relationships of the primary windings and secondary windings and the balance condition were deduced. Through the experimental model of balance transformer in simulation platform based on Matlab/Simulink, the electric characteristics of balance transformer and change law of zero sequence current and negative sequence current in different mode were researched. Through the simulation experiment, the theoretical analysis of correctness and feasibility are verified.
New Material Research of 200°C Ultra-High Temperature Fluid in Hydraulic Fracturing Industry Design Technology
Authors: Duan Gui Fu , Xu Yun , Lu Yong Jun , Cai Bo , Shen Hua
Published: April 2014

In order to solve NiuDong101 Well reservoir ultra high temperature (205 °C ) fluid fracturing low efficiency, quick acid rock reaction which usually adopt the 160°C fracturing fluid system. At the same time to meet the deep acid fracturing technology and greatly improve the output, so as to achieve the production increasing reserves of important target. So it is necessary to develop a novel 200°C fluid system to achieve high-efficient stimulation. Therefore, this paper invented a new high temperature resistant ternary anionic thickener, and launched some fracturing fluid performance evaluation. This fluid system achieved 176mpa.s under the condition of 200°Cand 170s-1of RS600 which can perform good temperature resisting & shearing resistance performance, breakthrough the limit of 200°Cof fracturing fluid temperature resistance. Field application to achieve a major breakthrough, it has important strategic significance for exploration promotion of bohai bay basin.
Design and Fabrication of Mult-Wave Band Yellow Laser Filter Film
Authors: Liu Dong Mei , Wang Shuai , Fu Xiu Hua , Zhang Jing , Kou Yang
Published: April 2014

In recent years, yellow laser has the broad application in military, civil use, health care and so on, so it is important to study the cavity facet film in yellow laser. In this paper, the substrate is Nd:YVO4，Ta2O5 and SiO2 are chosen as the film materials. A accurate film is designed and prepared with the specific refractive at the band of 589nm, 1064nm, 1178nm, 1342nm. The influence of thickness monitoring error on the measured spectral curve is analyzed. The film thickness control accuracy is improved by optimizing the parameters (for example: temperature, oxygen filling etc.) and adjusting the correction coefficient of sensitive layer. Finally，the influence of error on filter spectral characteristics is reduced. The result shows that the prepared film satisfies the using requirement standard.
The Design of Gm-C Low-Pass Filter for Micromachined Gyroscope
Authors: Lv Qiu Ye , He Chong , Fan Wen Jie , Zhang Yu Feng , Liu Xiao Wei
Published: April 2014

In this Paper, a 4th-Order Low-Pass Gm-C Filter is Presented. for the Design of Operational Tranconductance Amplifier(OTA), it Adopts the Techniques of Current Division and Current Cancellation. these Techniques can Help to Achieve a Low Transconductance Value. for the Architecture of the 4th-Order Gm-C Filter, it Consists of Two Biquads. the Two Biquads are Cascade Connected. the Gm-C Low-Pass Filter has been Implemented under 0.5 μm CMOS Process Model. the Final Simulation Results Show the Cutoff Frequency of the Filter is 100Hz and the Stop-Band Attenuation is Larger than 60dB. the Power Consumption is Lower than 1mW and the Total Harmonic Distortion(THD) is -55dB.
Micron and Nanometer Measuring Methods Based on Metrological Scanning Electron Microscope
Authors: Yin Bo Hua , Chen Dai Xie , Xia Rui , Wen Liang Dong , Xue Hong , Chu Ming Zhang , Li Han
Published: April 2014

Micron and nanometer dimensional metrology is an important part of integrated circuits manufacturing system and nanofabrication research work. Semiconductor device feature size has shrunk from the micron to dozen of nanometers. How to watch the micro structure clearly, identify its edge, and measure its dimension accurately are the major issues that need to be research. In this paper, a metrological scanning electron microscope (M-SEM) system with precision stage and laser interferometer is presented. Furthermore, this paper focuses on demonstrating a metrological SEM image edge detection algorithm which is the essential part of the metrological SEM system to realize the measurement of line width. The procedure of the algorithm is that SEM image is first analyzed by noise type according to the histogram characteristics. Then the image noise is reduced by specific filters. Furthermore, a specific interesting object image region is selected and pixel gray level values of the region are obtained by line scan. SEM image edges are determined by the characteristic of the pixel information in two possible cases. This algorithm preserves the edge details of the original image and detects the image edge automatically in an easy and fast way.
The Research of Industrial Brake Temperature Measurement Based on Nano-Materials and Nano-Technology
Authors: Chen Xiao Mei , Wen Hao , Wang Quan Wei , Geng Dong Yao , Chen Yan Ting
Published: April 2014

In order to improve the conventional industrial brake temperature measurement and put forward new methods, measurement schemes can apply nanotechnology and nanomaterials to industrial brake temperature measurement, so that the researchers would get more accurate temperature field for analyzing the effect of temperature change on braking performance in experimental environment, and in engineering field, it can also measure and monitor braking process in real time to prevent accidents. In this paper, the author analyzes the advantages and disadvantages of the conventional industrial brake temperature measurement, and then puts forward a infrared temperature measurement scheme based on nanostructured ceramic coatings, and some suggestions on the application of nanofilm and thermoelectric conversion nanomaterials in new sensor field.
Hysteresis Compensation of MSMA Actuators Based on Neural Network Model
Authors: Ji Hua Wei , Liu Mao Na , Hu Xiao Ping
Published: April 2014

In the Precision control industry, Due to a strong hysteresis characteristics of MSMA actuators between input and output , the positioning accuracy of the drive have been affected seriously, and its wider application limited.In order to improve the positioning accuracy of MSMA actuators, to eliminate or reduce the hysteresis characteristic,in this paper ,hysteresis compensation for MSMA actuators is proposed ,three methods like traditional PID feedback ,and feed-forward compensation ,and composite control with PID and feed-forward compensation ,these three methods are compared . results show that the composite control has better control performance,the MSMA actuators control accuracy kept in 0.8% range.
The Componential and Morphological Characteristics of Cu3N Induced by Femtosecond Laser Pulses
Authors: Yuan Ning Yi , Wang Shu Yong , Ding Jian Ning , Qiu Jian Hua , Wang Xiu Qing , Huang Wen Hao
Published: April 2014

We systematically study the componential and morphological characteristics of Cu3N films induced by femtosecond laser irradiation on glass substrate. The experimental results demonstrate that with increase of laser power, significant changes on surface morphology can be observed, and coarse ripples structures present dominantly on film surfaces after irradiated by femtosecond laser. By XRD analysis of the treated sample area, componential evolutional process from the Cu3N to Cu can be revealed at with increase of laser power, which provides an attracting application prospect in the field of utilizing microelectronic devices.
Histogram Based Bacteria Colony Features Analysis
Authors: Zhang Kun , Fei Min Rui
Published: April 2014

Features analysis is an important task which can significantly affect the performance of automatic bacteria colony picking. This paper presents a novel approach for adaptive colony segmentation by classifying the detected peaks of intensity histograms of images. The relevance and importance of these features can be determined in an improved support vector machine classifier using unascertained least square estimation. Experimental results show that the proposed unascertained support vector machine (USVM) has better recognition accuracy than the other state of the art techniques, and its training process takes less time than most of the traditional approaches presented in this paper.
Effects of Nano-Devices on Growth, Quality and Activities of Enzymes in Nitrogen Metabolism of Hydroponic Lettuce
Authors: Li Gui Lian , Chen Ri Yuan , Liu Hou Cheng , Song Shi Wei , Sun Guang Wen
Published: April 2014

To improve yield and quality of lettuce in hydroponic, the growth, quality and activities of enzymes in nitrogen metabolism of lettuce in hydroponics were studied with nanodevices. The results showed that the nitrate reductase activities (NRA) in plants with nanodevices were significantly higher than the control at 16rd day after transplanting (DAT). On the 25th DAT, the shoot fresh weight of lettuce treated with 5.6cm2/L nanodevices was 17.8% higher than the control, while there was no difference in dry weights of shoot among different treatments. The NRA of lettuce increased gradually with the amount of nanodevices increasing from 0 cm2/L to 5.6 cm2/L, then decreased with nanodevices amount increasing. There was no obvious difference in the activities of glutamate dehydrogenase (GDH) and glutamate synthase (GOGAT) among different treatments,while glutamine synthase (GS) activity was enhanced with the increasing of nanodevices amount. On the 34th DAT, the shoot fresh weight of lettuce treated by 5.6cm2/L nanodevices was 11.2% higher than the control. The activities of NR and GS treated by 11.2cm2/L increased 39.7%, 97.7%, respectively compared with CK, while the activities of GDH and GOGAT treated by 5.6cm2/L increased 89.0%, 77.3%, respectively. In treatment with 5.6 cm2/L nanodevices in nutrient solution, the contents of soluble protein, flavonoid, soluble phenolic and ascorbic acid (VC) in lettuce increased 92.8%, 19.8%, 36.7% and 61.5%, respectively.The nitrate content in lettuce significantly increased with the using of nanodevices, but did not exceed the national standard. In conclusion, the yield and quality of hydroponic lettuce were improved by nanodevices, and the activities of enzymes in nitrogen metabolism were enhanced, especially at 25th and 34th DAT and best dosage of nanodevices is 5.6 cm2/L.