bluuebunny/crossref_metadata_2025 huggingface dataset:
The Design of an Ultra Low Power and Mobile Measurement System of Underwater Target Remote Detection
Authors: Lin Wei , Yuan Bing Cheng , Bao Zhong Hua
Published: January 2012

A Ship in the sea generates electric field around it, which can become a great threat to ship’s safety. In this paper, a measurement system for the ship’s electric field signature was developed, and some key points about the design issue such as ultra low power consumption, low self-noise and big memory capability were discussed detailedly. Finally, a sea test was carried out to verify the presented system, which shows that the developed system runs reliably and meets the requirement of application well.
Effect of Ar/O2 Ratio and Substrate Temperature on the Hydrophilicity of SiO2 Thin Films Prepared by RF Reactive Magnetron Sputtering
Authors: Gao Song Hua , Gao Li Hua
Published: January 2012

SiO2 thin films were prepared on stainless steel substrate by RF reactive magnetron sputtering. Their microscopic surface morphology was characterized by atomic force microscope (AFM) and static contact Angle (SCA) was applied to evaluate hydrophilicity of films. It was found that SiO2 thin films showed super hydrophilicity which could last long at Ar/O2 ratio of 6:4; under such condition, substrate temperature also affects hydrophilicity of films, the best of which can be obtained at 90 °C.
Application of Kalman Filter in DC Motor Speed Control System
Authors: Zheng Zhong Qiao , Zhang Yan Hong , Zhang Jian Sheng
Published: January 2012

PID controller is widely used in industry field, but when the industry presence exists noise interference, it is difficult for the conventional PID controller to achieve the expected control effect, in view of this situation, the method of combinating Kalman filter with the PID control is studied in this paper, the DC motor speed control system is simulated, the results shows that the PID controller based on Kalman filter is better to inhibit the effect of white noise, and it has a good dynamic response characteristics.
Control Parameter Tuning of Magnetic Bearing PID Controller Based on Expansion Coefficient Critical Proportion
Authors: Yang Yu Min , Wang Xi Ping , Guo Li , Fan Man
Published: January 2012

The digital PID controller system for magnetic bearing was described in this paper which combined Matlab technique with simulation of the magnetic bearing control to reach the influence of parameters of digital PID controller for magnetic bearing control system. The application of the expansion coefficient critical proportion for turning parameters of digital PID controller can achieve better results. Finally, provide a simple and efficient method for numerical controller of magnetic bearing.
Distributed Remote Testing Research Based on Self-Union Technology
Authors: Li Wei , Wang Xi Ping
Published: January 2012

With the development of bandwidth wireless communication technology, the testing technology has been improved, and the Distributed Remote Integrated Testing Technology has emerged, which covers the network, software, computer, virtual instruments and co-ordinate technology. Base on analyzing the application of the wireless communications testing technology, the paper states the framework key technology and research points. At last, it gives a detailed application example in the real outfield.
The Features of Multiscale Pseudoframes and Gabor Frames According to Bivariate Filter Functions
Authors: Chen Zhong Yin , Feng Jin Shun
Published: January 2012

The advantages of wavelet analysis and their promising featu-res in various application have attracted a lot of interest and effort in re-cent years. Frame analysis has become popular much later in sampling theory, time-frequency analysis and wavelet theory. In this work, the notion of the binary generalized multiresolution structure (BGMS) of subspace is proposed. The characteristics of binary multiscale pseudof-rames for subspaces is investigated. The construction of a BGMS of Paley-Wiener subspace ofis studied. The pyramid decomposition scheme is obtained based on such a GMS and a sufficient condition for its existence is provided. A constructive method for affine frames of based on a BGMS is established. A method for designing a class of affine bivariate dual frames in bi-dimensional space is presented. The results we obtain gains much improvement.
Installation Determination Method of the Combined Wind-Storage System Aiming at Smooth Effects
Authors: Nie Hong Zhan , Zhang Dong Sheng , Qiao Ying , Xu Fei , Li Jing , Cui Zhuo
Published: January 2012

The energy storage system can be engaged to smooth the fluctuation output of wind power for better power quality and stability of power grid. The paper proposes a low-pass-filter-based smooth control model of the wind-storage combined system. Then the paper proposes the evaluation indices which depict power fluctuation of the combined system without/with smooth control, on which the installation storage capacity is optimized. All simulation is done on the basis of measured data
Finite Element Analysis of a Certain Tracked Vehicle Engine Compartment Test-Bed Support
Authors: Cui De Li , Jiang Kuo , Feng Su Li , Zhai Xu Hua
Published: January 2012

This paper uses solidworks software to build 3-D model of a certain tracked vehicle engine compartment test-bed support, then analyzed the model strain state and mode under typical operation condition by ANSYS. It is calculated that the support can meet the design demand.
Bearing Capacity Evaluation of RC Beam Bridge Based on Crack Index
Authors: Xue Peng Tao , Cao Hui , Wang Xiu Lan , Liang Peng
Published: January 2012

Using crack to evaluate the bearing capacity of RC Beam Bridge is an effective method. This paper puts forward using the crack spacing, width, height and their statistical weights to characterize the structural crack index and using Analytical Hierarchy Process to get crack index expression. After a lot of survey analysis of actual cracks, get corresponding relation between crack index and the checking coefficient of their bearing capacity, then through structure resistance expression to check structure, finally the assessment of the bearing capacity of the bridge was got. With a simply supported T beam bridge as an example, the result shows that this method is reliable, simple and economical.
Experimental Study on Working Performance of Axially Loaded Short Columns with Micro-Expansive Concrete Filled Steel Tube
Authors: Qi Su , He Jin Xing , Liu Nian , Wu Wei
Published: January 2012

There are changes in material properties of concrete when compared axially loaded short columns with micro-expansive concrete filled steel tube with axially loaded short columns with common reinforced concrete and these changes will inevitably lead to the change of axially loaded short columns with micro-expansive concrete filled steel tube in performance. It is impossible to fully use the existing research results of axially loaded short columns with common reinforced concrete; therefore, it is necessary to do experimental research on the working performance of axially loaded short columns with micro-expansive concrete filled steel tube. This paper studied the hydration heat, self-stress and failure load according to the test conditions of the 15 axially loaded short columns with micro-expansive concrete filled steel tube specimen; determined the optimum mix amount of axially loaded short columns with micro-expansive concrete filled steel tube and proposed the increase rate of ultimate failure load of axially loaded short columns with micro-expansive concrete filled steel tube compared with axially loaded short columns with common reinforced concrete. This will facilitate the practical application of engineering.
Study and Practice of Cleaner Production Pre-Audit on a Pharmaceutical Factory in Harbin
Authors: Su Rong Jun
Published: January 2012

According to the normal regulation and procedure of cleaner production, pre-clean audit is carried out in a pharmaceutical factory. After establishing an audit group, propagandas and mobilizations were conducted and investigations on site were performed. Twenty pieces of no or low cost solutions which involved control optimization, waste material recycling, renewal and maintenance of equipment, and enhancement of staff performance and management, et al. were propounded and adopted in the processes. As a result, some economic benefits were attained and the discharge capacity of waste water was reduced. Moreover, the key audit units and problems to be solved were clarified. This pre-audit work laid a sound foundation for the next audit stage in this factory.
Design and Implementation of a File Transfer System Based on .NET Remoting
Authors: Lou Qi Ming , Sun Jian Hong , Xu Hai Cheng , Fu Jin Wei
Published: January 2012

NET Remoting is a way of communication between the processes in .NET frameworks. It can be used for communication between different applications based on CLR on different computers on the network, it can also be used for communication between different applications based on CLR on the same computer. Firstly, the working principles of .NET Remoting are discussed. Secondly, a basic structure model for file transfer system based on .NET Remoting is proposed. Finally, gives the implementation of a file transfer and management system using .NET Remoting and SQL Server, which is safe, efficient and practical
Hardware Design of Precision Injection Molding Machine Temperature Control Circuit
Authors: Fang An An , Chen Zhi Hao
Published: January 2012

The existing hardware circuits can only measure a single point temperature in a small range owing to the influence of extremely little output voltage and the poor linear degrees of thermocouple on testing temperature ,and it is difficult to meet the demand of practical use because of its low measurement precision . This system realized accurate measurement of multipoint temperature in a large range using optimization design to overcome the above-mentioned defects,, It uses low maladjustment and high precision operation amplifier ADOP07 to constitute the inphase and shunt-wound difference amplification circuit to carry out non-electric measurement of thermocouple It also uses the CD4051 chip to compose the switch circuit at different time in order to realize the measurement of multi-thermocouple ,and the ICAD538 is used to implement square operation in order to make linear compensation of temperature , finally sends the measurement value to single-chip computer through A/D converter to process data which is controlled by the application of modern fuzzy controlling theory so as to reach the aim of precise measurement and control. The experiments show the system can realize accurate measurement of multipoint temperature in a wide from 20 to 400°C, and the experimental results are satisfying
Chaos, Sliding Mode Control between Two Different Fractional-Order Hyperchaotic Systems with Uncertain Parameters
Authors: Zhang Hong , Qiu Dao Yin
Published: January 2012

This work investigates chaos synchronization between two different fractional-order hyperchaotic system (FOHS)s with uncertain parameters. The Chen FOHS is controlled to be synchronized with a new FOHS. The analytical conditions for the synchronization of different FOHSs are derived by utilizing the stability theory of fractional-order system. Furthermore, synchronization between two different FOHSs is achieved by utilizing sliding mode control method in a quite short period and both remain in chaotic states. Numerical simulations are used to verify the theoretical analysis using different values of the fractional-order parameter
Motion Trajectory Planning of 3-Dof Wire-Driven Parallel Robot
Authors: Zhou Jin Peng , Zhong Zhi Dan , Wang Zhen Zhong
Published: January 2012

3-dof wire-driven parallel mechanism is studied in this research. The kinematic analysis of this wire-driven parallel mechanism is given according to analytical method. The method for spline function is proposed to generate a continuous, smooth and noiseless trajectory of the wire. The simulation results, based on simulink, verify the rationality of this trajectory planning algorithm
Environmental Risk Assessment of General Contractor’s EPC Project
Authors: Li Wang Qing , Song Li
Published: January 2012

For the problem of EPC project environmental risk were affected by a number of uncertainties, this paper improved the environmental risk indicators system of project and used unascertained functions and entropy functions comprehensively , proposed environmental risk assessment methods based on unascertained – entropy theory and clarified specific steps of the method according to a general contractor project example. The empirical research shows that the method is effective and feasible and the evaluation results are reasonable
An Algorithm for Map Coloring Problem Based on Depth First Search
Authors: Gao Fan , Mai Xiao Zheng , Cui Bing Liang
Published: January 2012

From analyzing the characters of depth first search algorithm， we proposed a new map coloring algorithm. The proposed algorithm overcomes the disadvantage of other algorithms in the field of Map-coloring, and the results show that the proposed algorithms can solve the problem of coloring administrative map efficiently and obtain optimal solutions
Preparation of Artificial Antigen and Immunological Trait for Estradiol
Authors: Wu Shi Xiu , Jiang Jin Qing
Published: January 2012

This paper presents an indirect competitive enzyme-linked immunosorbent assay (icELISA) using anti-mouse polyclonal antibody for rapid, sensitive analysis of 17-beta-estradiol (E2) residue. After derivation with succinic anhydride, E2 was coupled to bovine serum albumin (BSA) and ovalbumin (OVA) through carbodiimide active ester (EDC) method, and the conjugation ratio of E2-BSA was 18.6:1. Using mouse anti-E2 polyclonal antibody, an icELISA standard curve was established. The optimal concentrations of the coated E2-OVA and anti-E2 pAb were 2 μg/mL, and 1:32 000 dilutions, respectively, by the checkerboard titration. This method was sensitive and had a linear range from 0.16 to 128 ng/mL, with IC50 and LOD values of 3.76 ng/mL and 0.08 ng/mL. Therefore, the established icELISA provides a useful screening method for quantitative or qualitative detection of E2 residue in tissues or liquids.
Effects of Initiator and Catalyst on Properties of Dental Zirconia-Toughened Alumina Ceramic Base Crown Prepared by Gelcasting
Authors: Deng Zhen Nan , Wang Li Li , Liu Jin Song , Ma Jian Feng
Published: January 2012

Gelcasing has been recognized as a very high-potential method in fabricating complex-shaped ceramic products. In this contribution, the gelcasting process was applied to manufacture green body of dental zirconia-toughened alumina (ZTA) ceramic base crowns. As one of a series studies, this study was conducted to investigate the influence of initiator and catalyst concentrations on idle and processing time of gelcasting system and the strength of green and sintered body of ZTA ceramic base crowns. Six different groups were divided basing on different proportion of initiator (1-6 vol.%), and with different proportion of catalyst correspondingly. The results showed that when the initiator was 4vol.% and the catalyst was 8vol.% at room temperature, the time of solidified reaction and bisque properties were optimum and it also met the requirement of practical running time for shaping dental all-ceramic crown in lab.
Resource Representation in Migrating Workflow System Modeling
Authors: Wu Xiu Guo
Published: January 2012

Workflow is a critical enabler for achieving enterprise competitiveness with today’s hot technologies, as portals, e-business and e-commerce. Workflow modeling is the first step before workflow executes, and resources can become important decision factors. The lack of resources can cause contention, the need for some tasks to wait for others to complete, and the slowing down of the accomplishment of larger goals. In this paper, we discuss the resource model in workflow system, and define the resource-constrained model. The main merit of resource model is that it bridges the gap between the human and the machine level problem solving.
Overview: Methods of Crack Damage Detection Based on Modal Analysis
Authors: Deng Yue Cheng , Sun Hong Chun , Li Jia
Published: January 2012

Introduced the history of development of crack damage detection technology and summarized the current state of damage detection technique based on modal analysis. Finite element method is the main method for mechanical structure modal analysis at present. Many researchers studied a single crack or multiple cracks impact on different structure’s dynamic characteristics, however, these studies only limited to the current state of structures with damage. Considering damage extending when mechanical structure being on work, a new method combines modal analysis and theory of damage extend is proposed to analysis the extending trend of damage, which make it easy to assess remaining life of mechanical structures and make structures that meeting design life can still being on work before they lose their effectiveness, this can save lots of costs
Sewage Anti-Blocking Machine Principle and Double-Stage Pump Technology
Authors: Zhang Cheng Hu , Meng Na , Sun De Xing
Published: January 2012

The sewage should be filtered to prevent the blockage of the heat exchanger before using. And the anti-blocking machine is the key device to prevent blocking in sewage source heat pump system. The paper introduces the development of the anti-blocking machine: intermittent backwashing, flat continuous backing, cylindrical with external baffle continuous backwashing, double-stage continuous backwashing without external baffle. Also, it describes the principle of the anti-blocking machine, the key technologies and the necessity of choosing double-stage pump in sewage source heat pump system with anti-blocking machine. The paper concludes the technical characteristics, the advantages and disadvantages of the double-stage sewage source heat pump system and introduces the selecting principle of the double-stage pump. The paper clarifies some misunderstanding about anti-blocking machine and double-stage pump.
Non-Isolated Single-Switch Step Up/Down Converter with Wide Conversion Range
Authors: Do Hyun Lark
Published: January 2012

A non-isolated single-switch step up/down converter with wide conversion range is proposed in this paper. In the porposed converter, a boost converter and a single-ended primary inductor converter (SEPIC) are connected in cascade. Due to the cascade connection of a boost converter and SEPIC, wide conversion range is achieved. By utilizing a single switch, a complex control circuitry problem of conventional cascade converters is solved. The boost converter at the input stage can provide a continuous input current. The operation principle and steady-state analysis of the proposed converter are provided. A prototype of the proposed converter is developed, and its experimental results are presented for validation
Enhanced Hydrolysis of Furfural Residues by Trichoderma cellulases with Addition of Natural Surfactant Tea Saponin
Authors: Feng Yue , Ji Li , Liu Hui Qin , Jiang Jian Xin
Published: January 2012

Effect of the natural non-ionic surfactant Tea Saponin on hydrolysis of furfural residues by cellulases fromTrichoderma pseudokoningiiandTrichoderma koningiiwas assayed. Glucose concentrations released byT.cellulases were 4.16 g/L and 1.92 g/L, respectively. The contents increased to 13.77 g/L and 6.23 g/L in the corresponding digests with addition of surfactant (12 g/L). Glucose yields were enhanced to 52.54% and 34.16% with the surfactant concentrations of 10.5 g/L and 12 g/L, respectively. The results indicated that Tea Saponin was beneficial for hydrolysis of furfural residues. Tea Saponin could maintain surface tension in a low level even it was hydrolyzed by cellulases, suggesting that the surfactant was suitable for lignocellulose saccharification industry.
Research on the Forest Inventory Based on Three Dimentional Laser Scanner
Authors: Ma Lei , Guo Xiu Rong
Published: January 2012

In this paper, a great large of point cloud data obtained by a laser scanner is simplified firstly, then geometry analysis method is applied in order to fit the trunk diameter, lastly, utilizing timber volume formula, the standing tree volume can be calculated and furthermore, forest inventory also can be computed easily. As shown by the test, the standing tree volume can be worked out fast and exactly and the error of which is less than 3 percent
Solving the Dynamic Model of Metabolic Network of Escherichia coli by Adams Methods
Authors: Zhou Qing Hua , Cui Jing , Xie Juan
Published: January 2012

We previously analyzed the dynamic flux distribution and predicted glucose, biomass concentrations of metabolic networks ofE. coliby using the penalty function methods. But the consequences were not as well as we expected. In order to improve the predicated accuracy of the metabolite concentrations, instead of using Runge-Kutta algorithm, we apply Adams methods which belong to the multi-step ones in the process that solves the dynamic model of metabolic network ofE. coliand obtain better simulation results on the metabolic concentrations.
Application of Uniform Design in Experiments of WEDM in Gas
Authors: Wang Tong , Xie Shu Qiang , Xu Xiao Cun , Chen Q. , Lü X.C. , Zhou S.H.
Published: January 2012

Comparing with conventional WEDM in emulsion, dry finishing of high-speed WEDM (HS-WEDM) has advantages such as higher material removal rate, better surface roughness and straightness. Authors have presented a new procedure as gas-liquid combined multiple cut, in which roughing is processed in dielectric liquid, and semi-finishing is in liquid or gas, while finishing is in gas. For better understanding the effect of machining parameters on surface roughness(Ra) and cutting speed (Vw) in dry finishing, a L25(56) Design test was implemented. The analysis of variance shows that offset and wire length are not significant on Ra and Vw. In this paper, the other four significant parameters, such as pulse duration, pulse interval ratio, peak current and no load worktable feed, were selected as factors in Uniform Design test. The final regression equations for Ra and Vw in terms of the actual parameter values were calculated out with MATLAB. Regression statistics of values R2 imply the two regression equtions fit well with test data and Model F-Values imply the two models are significant. Values t and α for regression equation coefficient tests of Ra and Vw show the major impacting items and interactions between them.
Selection of Minimum Quantity Lubrication (MQL) Parameters in Milling of Ti-6Al-4V
Authors: Liu Zhi Qiang , Cai X.J. , Chen Ming , An Qing Long
Published: January 2012

Different parameters of Minimum Quantity Lubrication (MQL) system, including air pressure, oil quantity, nozzle position, might have different influences on the cutting force and the cutting temperature. This paper presents an experiment of end-milling titanium alloy with MQL system. The objective of the experiment is to investigate the influences of MQL parameters in milling of Ti-6Al-4V. The results of experiment show that there are different effects on the cutting force and the cutting temperature with different MQL parameters, which will help to select different parameters in the end-milling process of Ti-6Al-4V.
Effects of Nano-Al2O3p on High Temperature Frictional Wear Behaviors of NiCoCrAIY Cladded Coatings
Authors: Wang Hong Yu , Zuo Dun Wen , Li X.F. , Wang Ming Di , Zhao Y.F.
Published: January 2012

To study effects of nano-Al2O3p (nanometric Al2O3 particles) on high temperature frictional wear behaviors of the NiCoCrAlY coating (a high temperature protective coating), three NiCoCrAlY coatings strengthened by different contents of nano-Al2O3p were prepared on a Ni-based super alloy by using laser cladding technology and their dry frictional wear behaviors at 500 °C in static air were investigated. The comparison was made with the coating without nano-particles. The results show that the frictional coefficient of the coatings increased with the hardness after adding nano-Al2O3p and the wear resistance of the coatings was enhanced. Among nano-Al2O3p-added coatings, the coating added with 1.0 wt% nano-Al2O3p performs best. The wear rate of the coating is only 58% of the coating without nano-particles. Moreover, the improvement of the oxidation behavior plays an important role in improving the high temperature wear resistance.
The Test and Evaluation of Air Anions Concentration in the Sceneries of Zhangqiu, Shandong
Authors: Qi Huai Dong , Li Qing Shan , Ren Jun , Zhang Min , Hong Wei , Jiao Qi Xing
Published: January 2012

To create a new tourism attraction and further develop the tourism of Zhangqiu, the Tourism Bureau of Zhangqiu cooperated with Yanshan University in the testing of air anions concentration in twenty-five scenic spots of eight sceneries in Zhangqiu on July 1stand 2nd, 2010. The specific test was finished by the air anions testing team of Yanshan University, which was composed of graduates that major in polymer material, then they evaluated the level of air anions concentration in each scenic spots, according to the seven levels standard evaluation system, that proposed by Professor Qingshan Li of Yanshan University.
Preparation and Characterization of Sepiolite Nanofibers by Microwave Chemical Methods
Authors: Wang Fei , Liang Jin Sheng , Tang Qing Guo , Chen Cong , Chen Ya Lei
Published: January 2012

The sepiolite samples were defibered by using microwave chemical technique, and then different sepiolite samples were obtained with different treatment process. The effect of reaction time on the defibering for sepiolite fiber bundles was studied systematically. Through characterization by scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscope (FTIR), it was found that the defibered sepiolite samples had an average diameter of about 100 nm and length greater than 20μm. The defibering effect of sepiolite samples as prepared reached optimum at the reaction time of 13 min, and the structural stability of sepiolite was kept after defibering treatment.
Characterization of Photoelectric Properties of ZnO by I-V Measurement
Authors: Miao Meng Meng
Published: January 2012

Experiments with ZnO Metal-Oxide-Semiconductor （MOS） under different circumstances were made to get four different I-V curves. There were four conditions: dark, and tests with the green, blue, ultraviolet LED light. According to references, three parameters B，VB0and Nbarrcould be acquired by fitting lines of the I-V curves using MATLAB and LabVIEW. From their definitions, B, VB0and Nbarrindicate photoelectric properties of ZnO cooperatively under concrete conditions. VB0,grain boundary potential, is parameter of extrinsic properties of ZnO determined by both ZnO and testing conditions. So VB0is critical to control the photoelectric properties of ZnO. A smaller VB0, the stronger the photoelectric response of ZnO and the lager the efficiency of photoelectric conversion. Besides, this theory can be expanded to test the photoelectric properties of the other semiconductor materials. And I-V curves can direct the application of these materials efficiently.
Calculation of Timber Outlook Tower with Influence of Behavior of “Steel-Timber” Connection
Authors: Kala Jiri , Salajka Vlastislav , Hradil Petr
Published: January 2012

The paper describes the dynamics analysis of the timber truss tower structure located near Bohdaneč village. Regular static analysis and response on dynamic wind action detailed calculations of tower was performed. Article contents description of elaborated analysis, results summary and qualifying reliability of the structure considering dynamic wind effect in direction of the flow, vortex excitation and pedestrians’ movement action.
Air Quality Monitoring System Based on LabVIEW
Authors: Wang Hai Bao , Wu Ting Ting , Wu Guang Jie
Published: January 2012

The design of real-time monitoring system of air quality is disccussed. The use of virtual instruments can reduce hardware designs. The real-time monitor, the display of curve and data are based on virtual instrument development platform LabVIEW. The use of wireless transceiver can get rid of space limitation and physical wiring, and curve fitting technology is used to achieve error correction and analysis, improve accuracy of the systematic sampling. This system has changed the trandi-tional methods, made the decetion system modular, intelligent, systematic and real time.
Research on Energy Conversion Model of Solar Photovoltaic Power Generation System
Authors: Zheng Gu Ping , Yang Wei
Published: January 2012

Solar photovoltaic power is a new form of new energy. It is the energy conversion model that change solar energy into light energy. This article is that energy conversion model of solar photovoltaic power generation system was studied. For household photovoltaic power generation systems, the system’s energy conversion is described by mathematical calculation and computer simulation. It makes an intensive study of the process of radiation, battery energy and power conversion during the whole course of the solar photovoltaic power generation.
Laboratory of Flexible Manufacturing System
Authors: Košťál Peter , Mudrikova Andrea
Published: January 2012

The main advantage of the flexible manufacturing system is its high flexibility in management of production facilities and resources (time, machines and their utilization, etc.). The largest application of these systems is in the area of small batch production where its efficiency is getting near to the mass production efficiency. Its disadvantage is the high implementation price.
Effect of Inorganic Flame Retardant on the Properties of Wood/PVC Composites
Authors: Xu Kai Meng , Li Kai Fu , Deng Yan Ping , Yan Xue , Xie Chen Ping
Published: January 2012

This study was conducted to research on the effect of the mechanical and flame retardant properties of wood/PVC composites after being treated by three different types and contents of inorganic flame retardant (Al (OH)3, ZB and Sb2O3). The result indicated that it had an obviously descending tendency for impact flexibility with content of inorganic flame retardant increased, as for tensile strength it would increase in one appointed range and a reduction also took place around another specific range except ZB. The effect rank of the three kinds of inorganic flame retardant when they reached the hard burn level of Chinese standards (OI≥32) was Sb2O3(6%)>ZB(10%) >A1(OH)3(30%) in sequence. Synthetically taking into account mechanical and flame retardant properties, it was evidently concluded that the optimum choice of the three inorganic flame retardant for Wood/PVC composites was ZB in production.
Design of 3D Pattern on Jacquard Fabric Based on Digital Jacquard
Authors: Zhu Xiao Hang , Xu Yu Hong , Du Lei , Xie Yong
Published: January 2012

Design the 3D pattern of jacquard fabric which can be produced as wall covering, we found that choose decentralized irregular image and make the image deformation is not obvious; floating length can’t be too long and tightness are almost same everwhere to make the fabric smooth; when match designing, rendering algorithm must be from the center to keep the two sides from deformation; the weight and length of the pattern should be design base on the image to make the joint invisible.
Experiment Study on Treatment of Chromium(VI)-Containing Groundwater by Modified Synthetic Zeolite
Authors: Huang Yu Jie , Zhang Huan Zhen
Published: January 2012

In order to improve the removal ability of hexavalent chromium on the synthetic zeolite, the synthetic zeolite was modified by FeSO4, which was used to removal hexavalent chromium in groundwater. The results showed that the concentration of Cr (VI) can be reduced from 5.0mg/l to 0.03 mg/l, which meets the requirements of groundwater standards (0.05mg/l) by using modified zeolite in a liquid-to-solid ratio of 20 ml/g, pH=3 for 120 minutes. The adsorption of Cr (VI) on the modified synthetic zeolite could be described by the Langmuir and Freundlich adsorption isotherm. It is showed that the synthetic zeolite modified by FeSO4 has good treatment effect and after treatment the pH of groundwater can reach around 6.8, which need no more pH adjustment.
Analysis on the Ultimate Pullout Force of Prestressed Cable Based on Nonlinear Mohr Strength Criterion
Authors: Luo Xiao Yan , Liu Wei Ping
Published: January 2012

Based on parabolic Mohr strength criterion and the ultimate equilibrium principle, the ultimate pullout force of prestressed cable is studied. The ultimate pullout force of prestressed cable is related to the rock type, the shapes of rapture surface, grouting pressures and compressive strength of rock, etc. The results show that the grouting pressure increases, the ultimate pullout force of prestressed cable increases also. It can provide theoretical supports for some prestressed cable engineering practices.
Study on the Safety of Mineral and Synthetic Oil Added Commonly Used Extreme Pressure Additives
Authors: Chen Zhuo Jun , Feng Long Long , Li Bao Liang , Yue Jin Jin , Wu Ying Liang , Dai Zhen Ning
Published: January 2012

This article use the Sulphide Isobutene (T321), Five Sufides Dialkyl(RC2540) and Star of Phosphorus(P110) as the additives,Neopentyl Polyol Ester(NPE) and mineral oil N32 as base oil. Compound above additives and base oil for the four levels. A sample: adding 4% T321 additive in NPE. B sample: adding 4% T321 additive in N32. C sample: adding 4% RC2540 additive in NPE. D sample: adding RC2540, T321 and P110 additives in NPE (all is mass fraction). The oral acute toxicity test, eye mucous stimulation test, skin hypersensitive test, soaking tail toxicity tests were conducted in above samples. The test results show that. The mineral oil, it’s not only toxic then synthetic oil but also has a poor lubricating ability compare with the same percent additive in synthetic oil. In oral acute toxicity test, eye mucous stimulation test, skin hypersensitive test, soaking tail toxicity tests, Toxic reaction of mineral N32+4%wt Sulphide Isobutene (T321) obviously from other oil samples.
Analysis of Tooth Surface Temperature Field and the Influencing Factors of Face Gear Driven
Authors: He Guo Qi , Yan Hong Zhi , Hu Wei , Shu Tao Liang
Published: January 2012

According to the theory of heat transfer, it analyzed the calculating method of tooth friction heating in the process of face gear tooth meshing. It emulational analyzes the thermal coupling of the face gear with ANSYS/LS-DYNA, and extracts the state of each engaged positions in the meshing process, emulate the temperature distribution & temperature changing trends in the process of face gear tooth meshing. Through the temperature measurement experiment the face gear contact, it verifies the correctness of the emulation results. Simultaneously, it also analyzes the influence to the surface temperature of face gear of rotation and load, In the case of other conditions remain unchanged, low-speed is an effective way to prevent instantaneous temperature rise.
Study on Dynamic Balance Weighting for Single-Disk Rotor System Based on Phase Difference Mapping
Authors: Zhao Qing Liang , Wang Hua Qing , Gao Jin Ji
Published: January 2012

The rotor mass imbalance is main reason of rotating mechanical vibration. A new dynamic balance weighting method for single-disk rotor system based on phase difference mapping is presented. Firstly, the influence coefficient method and its characteristics are analyzed in detail. Secondly, the equivalent phase difference mapping relationship between incentive and vibration response for single-disk rotor system is proved by differential equations and Laplace transform theory. Finally, a specific application instance is showed. The new method is simple and easy to peel the phase coupling relationship between incentive and response, which can be used to guide dynamic balance weighting for single-disk rotor system on site.
Inversion Analysis Based on the Unloading Rock Mass of Underground Powerhouse Monitoring Achievements of Jin Ping Cascade II Hydropower Station
Authors: Liu Jie , Li Jian Lin , Xiao Lei , Luo Shi Wei , Cai Jian
Published: January 2012

On the basis of unloading rock mass theory, we identify the excavated rock mass parameters by means of neural network training in each step, in which the subjective factors of the parameters selected process have largely been decreased. Through inducing the parameters of inversion into two -dimensional modeling, we aim to do the numerical simulation computing in various conditions. By comparison, the calculated displacement trend of the measuring points following the multi-point extensometers is basically identical with the monitoring displacement trend.
Using Iterated Local Search for Efficiently Packing Unequal Disks in a Larger Circle
Authors: Huang Wen Qi , Zeng Zhi Zhong , Xu Ru Chu , Fu Zhang Hua
Published: January 2012

Packing unequal disks in a container as small as possible without mutual overlap is a NP-hard problem with a plenty of real world applications. In this paper, we introduced iterated local search to tackle with this problem, and using Critical Element Guided Perturbation (CEGP) strategy to jump out the local minimal, and using BFGS method to get each neighborhood optimized in local search procedure. Experiments showed its efficiency by breaking several world records of a set of benchmark.
The Modal Analysis of Full Mounted Converter Vessel Tilting Mechaism
Authors: Gu Ying Kui , Tong Xiang Xiang , Luo Xin Chong
Published: January 2012

To improve the working reliability of the high-speed gears of full mounted converter tilting device and to avoid resonance during working, the dynamics modeling of the high-speed gears is concerned. The three-dimensional model of the high-speed gears is established by using Pro/E, and the vibration modal analysis under definition contact and not definition contact are processed by using Ansys. The natural frequency and natural vibration mode of lower order vibration are obtained by the analysis, and it can be found that there has essential difference between definition contact and not definition contact. This study can provide theory basis for the normal operation of the tilting device.
Discuss of Express Tunnel Design in Poor Geology Area
Authors: Fu He Lin , Lu Wen Bin , He Yu Wu , Ouyang Da Ren
Published: January 2012

Combined with Poor geology problem during Express highway construction in Hunan Express, some measures for design, construction has been put forward. The Author’s aim is to provide some useful reference for tunnel design and construction.
Research on Mechanism of Two Phase Flow Lifting Pressure Equipment and Output Regulation
Authors: Li Gang , Huang Yun Hong , Lv Zhi Lin , Huang Hui Lan
Published: January 2012

Taking into account the process and mechanism of lifting pressure were complex due to the condensation and shock wave, a one-dimensional theory model based on direct contact condensation is presented to analyze the lifting pressure character of steam-water two phase flow injector, and some key issues, such as inter-phase mass transfer computed by the average condensation heat transfer coefficient and phase volume fraction determined by steam plume, are discussed in detail. The regulations of discharge mass flow and output temperature are decoupling control according to the theory model, and the inlet water mass flow is to determine the output temperature, the variable throat section of steam nozzle is to determine the discharge mass flow.
Analysis on Quality Issues for External Thermal Insulation System on Outer Walls
Authors: Wang Ding Tang
Published: January 2012

With the coming forth of a batch of energy saving buildings in China, some quality issues of cracking, hollowing, dropping, disrupting of thermal insulation layers follow on the heels of it. This paper analyzes the mechanism and causes of formation on these quality issues and puts forward the corresponding countermeasures for avoiding, treating or taking precaution against these issues. It is a valuable reference to treat the issues on insulation system as well as has directive meanings to install insulation system.
Depth Control of an Electro-Hydraulic Servo System Based on Fractional Order PID
Authors: Gao Qiang , Ji Li Jun , Hou Run Min , Chen Ji Lin
Published: January 2012

Electro-hydraulic servo systems (EHSS) are widely used in many industrial applications, and to determine the control strategies to exhibit high robustness and high precision remains the focus of attention. In order to improve the control performance of EHSS, a novel control method, based on fractional PID (FPID) controller, is proposed and designed for the EHSS. The transfer function of EHSS is constructed using first-principle method. The feasibility and availability of the proposed controller are examined by numerical simulation. The control performances of fractional FPID are well assessed based on performance indexes, including response time, tracking accuracy and robustness. The results of the simulation verify that FPID controller is of excellent control performance, and is suitable for the control of EHSS.
Influence of Convalescence on Soil Temperature Field of Well Group around Vertical Single-U-Tube Ground Source Heat Exchangers
Authors: Du Zhen Yu , Zhang Yi Xing
Published: January 2012

In this paper, the mathematical physical model of the heat and moisture transfer in the single-U-tube heat exchanger of a ground source heat pump(GSHP) on well group is established and validated using observed data from the practical rock-soil thermal response test for a resident district in Taiyuan, water in soil is three-dimensional seepage flow and the soil is layered according to the geological structure in the depth direction. The dynamic load of the district for one year is input into the model. The temperature fields of well group are simulated numerically in the two conditions which convalescence periods are omitted or not. It shows that it rather necessary to take the influence of convalescence periods into consideration while predicting the soil temperature field of a GSHP system running for a long term.
Analysis for Combustion Process in Cylinder of 5S60 Diesel Engine
Authors: Chen Guo Jin , Liu Zhong Min , Liu Ting Ting , Su Shao Hui , Yuan Guang Jie , Cao Yi Jiang
Published: January 2012

The optimization and matching question for the low-speed diesel engine’s combustion process determines its power, efficiency and emission. But the optimization and matching of the combustion process is related with the fuel injection rule, the intake swirl control, the valve timing adjustment, the combustion chamber structure, the operating condition parameter and so on. This paper takes the 5S60 marine low-speed diesel engine as the study object. The whole running phase oriented model based on the unified multi-domain has established, and the analysis for the diesel engine’s combustion process in cylinder has carried on. The analysis result provides the technical support for the economical, safe and reliable operation of the diesel engine. Thus the combustion process in cylinder is improved, the diesel engine’s performance is enhanced, and the pollutant discharge is reduced.
Study on the System Characteristic of a Crane Walking Hydraulic System Based on AMESim
Authors: Li Li , Wu Xiao Qiang , Zhao Hua Yang , Shan Xiao Min
Published: January 2012

A system simulation model is established by multidisciplinary simulation software Amesim. This model is on account of travel system of a certain hydraulic crawler crane, mainly on selector valve and load sensing pump. Based on this model simulation and dynamic analysis is carried out, then output volume change characteristics of load sensing pump along with load changes is got. Contrasting the simulation result and experiment result, correspondence is very good， which indicate that this model and related parameters are in accordance with real system. A simulation analysis method used to analysis changes of load sensing pump along with load changes is provided.
Experiment on Vibration Reducing Capacities of Pore Viscous Damping and Liquid Film Damping
Authors: Zhao Shi Quan , Zhu Dan Hui , Qi Yong Xing , Chen Hua Ling
Published: January 2012

Recently, we develop a new method for reducing vibration named liquid film damping (LFD) which combines the mechanism of vibrational energy dissipation of liquid viscous damping (LVD) and air film damping (AFD). This paper use experiment to compare the capacities of vibration decreasing of LFD and the pore viscous damping (PVD) which is an extensive applied type of LVD. The results of experiment present LFD has better ability than traditional LVD in reducing vibration of structures in not only higher frequency but lower frequency.
The Finite Element Analysis and Improvement Practice of Shaker Based on ANSYS
Authors: Zhang Song , Yang Yan Hong
Published: January 2012

The SZR straight line shaker applied in a sintering plant is used as an example. Based on the shaker's performance, the inherent mode of vibration, the natural frequency and other factors were analyzed, an improvement method was proposed. The finite element analysis is used to simulate the exciting force, and performed the vibration mode and statical analysis. This will improve its application in the production practice, with a significant effect.
Analysis on Degree of Freedom and Singularity of Mechanism Based on Topological Graph Theory
Authors: Luo Jian Guo , He Mao Yan
Published: January 2012

Based on the analysis of current developing state of graph theory, define the description of spacial moving capability of common couples and translation base and rotation base of mechanism, based on the new description method in topological graph theory. DOF(degree of freedom) of hybrid mechanism analysised with example based on the definition of dimensionity of branch spacial moving capability and mechanism spacial moving capability, necessary and sufficient condition of nonsingularity of mechanism presented, as well as the necessary and sufficient condition of singularity of mechanism deduced , in-phase and assimilation condition and in-phase and dissimilarity condition and asynchronism condition of limitation of input base of branch adopted, case number of position singularity and pose singularity and position and pose singularity obtained then, still the way of founding the combination and case number of common serial mechanism and parallel mechanism and hybrid mechanism mentioned.
Study of the Mathematic Modeling Method of the Center Distance Minimum for Gear Set of Spur Gear
Authors: Wang Xiu Shan , Chen Ying
Published: January 2012

The article introduced the mathematic modeling and design method of the center distance minimum for the gear set of the spur gear primarily. Mathematic model built in the article included four independent variables, one object function, and ten bounds for the object function. It is common of the modeling and design method which is used for the new designing if the drive ration is changed.
Damping Property of Polyurethane/Poly(methylmethacrylate-butylmethacrylate-2-Hydroxyethyl methacrylate) Interpenetrating Polymer Networks
Authors: Song Guo Jing , Liu Mei Ju , Yi Jin , Xu Yong Gang
Published: January 2012

Polyurethane/poly (methylacrylate-butylmethacrylate-2-Hydroxyethylmethacrylate) Interpenetrating polymernetworks (IPNs) were prepared by sequential polymerization. Their glass transition performance was measured by using differential scanning calorimetry (DSC). DSC results revealed there are three glass transition temperatures (Tg) for both IPNs samples. Their damping properties were evaluated according to ASTM E756-05. Their loss factor (tan δ>0.3) from 10-1300Hz displays a wide temperature range of 94°C.