bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on Transient Torsional Vibration Test of Harmonic Reducer
Authors: Xu Tianhao , Tan Jing , Huang Dishan , Tong Tong , Gu Jingjun 
Published: November 2022

Abstract
The torsional vibration of harmonic reducer is related to the positioning accuracy and Trajectory Accuracy of industrial robots. Based on this, this paper studies and experiments the impact response of harmonic reducer. By establishing the torsional vibration model with periodic variable stiffness of harmonic reducer, the unit impulse response and characteristics are analyzed; The time-varying torsional stiffness of the harmonic reducer is verified by setting up an experimental platform for the harmonic reducer, and the transient torsional vibration characteristics of the harmonic reducer are obtained The research will provide basic data for the optimal application of harmonic reducer.
Research on free vibration characteristics of axially moving functionally graded plates under the action of temperature field
Authors: Mao YongHeng , Tang YouQi , Wu JunHao 
Published: November 2022

Abstract
As a new type of material, functionally graded materials are widely used in industry, aerospace and other fields due to their special physical properties. Among them, there are also many in the thermal environment, and the existence of the thermal environment will also have a great impact on the stability of the moving object. Therefore, it is of great significance to study the axial motion functionally graded materials in the temperature field. In this paper, taking the axially moving functionally graded plate as the research object, the dynamic control equation of the axially moving functionally graded plate in the thermal environment is established, and the simplified linear dimensionless control equation and boundary conditions of the axially moving functionally graded, using the multi-scale method to find the governing equation, and using the complex mode method to solve the equation to obtain the natural frequency of the system. Furthermore, the effects of axial velocity, functional gradient index, viscoelastic coefficient and thermal parameters on natural frequency are analyzed by Matlab.
An anti-collision system for tower cranes considering lifting heavy objects
Authors: He Dongfeng , He Junping , Li Zhibin , Huang Bo , Cheng Hongliang 
Published: November 2022

Abstract
Most of the traditional tower crane anti-collision solutions only consider the ideal working environment of the tower crane without lifting heavy objects or fail to consider the collision under the condition of lifting heavy objects, which has certain limitations in practical engineering applications. This paper proposes an anti-collision system for tower cranes that considers lifting heavy objects. The system introduces the concept of the dangerous area of cylindrical heavy objects, and explains in detail the anti-collision principle of tower cranes when lifting heavy objects. At the same time, the specific scheme of hardware controller and software design of the system is introduced. The system makes the tower crane anti-collision system closer to the real working situation, and is a supplement to the research and application field of tower crane anti-collision.
Calculation and Analysis of Deformation Characteristic and Energy Dissipation of Flexible Bearings in Harmonic Drive for Industrial Robots
Authors: Xu Zhaoxiang , Wang Yazhen , Wang Haifeng 
Published: November 2022

Abstract
The flexible bearing is a key component of harmonic gear reducer for industrial robots. The wave generator cam as assembly part will significantly affect the flexible bearing transmission state. This paper derives the flexible bearing deformation coordination equation formula based on the harmonic drive theories, and the deformation characteristics of the flexible bearing formed by different wave generator cam shapes were studied. Combined the theory of clabellon with the load and deformation which are obtained, the deformation energy dissipation of the outer ring of the flexible bearing is discussed and quantitatively evaluated. The results showed that the wave generator cam shapes have a greater effect on the carrying capacity of the flexible bearing, and the dissipation of deformation energy of the flexible bearing can be effectively reduced by selecting appropriate wall thickness of the outer ring. Moreover, it was found that the two-roller wave generator deformation energy dissipation is the least at the same constraint.
Matlab-based Study of the Dynamic Performance of Flexible Jointed Robots
Authors: Huang NanJun 
Published: November 2022

Abstract
In the development and research of industrial robots, due to the defects of traditional mechanical structures in the drive system and sensors, control units and other aspects, so in order to solve these problems and improve the efficiency of flexible work, the author proposes a Matlab based core motion characteristics analysis method, that is mathematical modelling method (GUI) to improve the elastic joint robot dynamics The relationship between performance index evaluation and prediction model parameters. At present, most of the research on elastically articulated robots at home and abroad is focused on the development of one or several functionalised components. In this paper, the kinematic model is developed and its performance characteristics are analysed based on the Matlab c language platform. The kinetic equations are discretized to obtain the velocity and acceleration curves with time for each degree of freedom, so that the non-linear contact angle matrix and the driving torque can be established.
Path Planning of Manipulator Based on Improved RRT* Algorithm
Authors: Ye Mengmeng , Dong Xiang , Zhao Jianjun , Huang Zexia 
Published: November 2022

Abstract
The traditional RRT* algorithm lacks directionality in sampling, and often generates a large number of invalid nodes, resulting in low utilization of later nodes. A large number of calculations between nodes cause the time spent by the manipulator to plan a path greatly increased and the path is not smooth. For the shortcomings of the above RRT* algorithm, an improved RRT* algorithm is proposed in this paper. First, a random point is generated with variable probability bias. Second, the sampling method is improved and an adaptive step size strategy is introduced. Finally, for the initial path, a path point connection screening strategy is introduced, and the screened path points are optimized again using a cubic b-spline curve. The experimental results show that the improved RRT* algorithm can quickly find a collision-free path, the path is more optimized, and the planning time is greatly reduced.
Intelligent algorithms for six degrees of freedom robot trajectory planning considering vibration suppression
Authors: Li fazhe , Cao Jiayong , Wu shihao , Wu peihua , Zhu ziwei 
Published: November 2022

Abstract
The residual vibration of the flexible joint manipulator during and after the movement will seriously affects the positioning accuracy of the manipulator. This paper discusses the trajectory planning method for suppressing the joint vibration. A trajectory optimal model which contains the minimization of both time and jerk was proposed. An optimization method based on comprehensive learning particle swarm optimization (CLPSO) algorithm was utilized for solving the optimal problem. Compared with other optimal solution method, CLPLO has the advantages of avoiding premature convergence. A numerical simulation case shows that the optimal trajectory obtained in this paper generated less joint vibration. The effectiveness of the proposed method was verified to some extent.
Simulation of three cylinders synchronous circuit based on RBF neural network optimized PID controller
Authors: Tan Liang , Huang Jinfeng , Kou Xinghua , Wang Xingzhong , Wang Wanli 
Published: November 2022

Abstract
RamRig hosting system is a common system for offshore and onshore drilling rigs, which uses ram cylinders to lift and lower the top drive on the drilling rig. In order to ensure the accuracy, stability and robustness of synchronous control of RamRig hosting system, RBF neural network is used to adjust PID parameters online, and a three cylinders synchronous loop simulation model based on RBF optimized PID controller is built in AMESim and Simulink. The simulation results show that the three cylinders synchronous hydraulic circuit based on RBF neural network optimized PID controller has higher accuracy and stability, and is fully capable of realizing the three cylinders synchronous output action of RamRig hosting system.
Research on the path planning of transportation UAV in rasterization scene based on ant colony algorithm
Authors: Cheng Lihong , Xiao Yanping , Ma Chensheng 
Published: November 2022

Abstract
Aiming at the difficulty of material distribution on the island, this paper uses the ant colony algorithm to simulate the path of the transport UAV based on the two-dimensional gridded island scene. Since the ant colony algorithm has significant advantages of strong robustness and high scalability, this paper fully verifies the feasibility of the transportation UAV path planning in the rasterized island scene.
Effects of Impact Hammer Parameters on Mechanical Impedance Measurement
Authors: Chen LinXiong , Hu CaiXia , Fang Chang , Liu Wei 
Published: November 2022

Abstract
Base impedance has a direct effect on mechanical equipment’s properties, and thus its accurate measurement constitutes an important foundation for the evaluation of these properties. Through theoretical deduction and base impedance measurement, we investigated the influences of impact hammer parameters on mechanical impedance measurement using an impact excitation method. By comparing the effects of hammer head softness and hammer size on base’s mechanical impedance measurements, we know that soft and hard hammer heads were suitable for the impedance measurement in low and high frequency regions, respectively, and that hammer size had a little influence on impedance measurements.
Reliability analysis and verification of the rubber support base for battery pack
Authors: Fang Limin , Xiong Linhua , Liu Shuai , Jiang Jinghong 
Published: November 2022

Abstract
In this paper, a design sample of rubber support base of battery pack is analyzed and verified. The status and response of the sample under the actual working scene are simulated and analyzed by using structural finite element simulation. The weak point position and local stress-strain index of the rubber support base are obtained, and the stress variation and fatigue life under two different types of mounting base are compared and analyzed. At the same time, the main failure modes of the rubber support base are verified by the durability test of the real samples and the microscopic characterization analysis of the fracture morphology, which are consistent with the simulation results. On this basis, the design and optimization suggestions of the rubber support base are put forward.
Research on key technology of ultrasonic temperature measuring instrument in high-temperature solid structure
Authors: Cui Yue , Xiang Jing , Wei Dong , Shi Youan , Du Yanxia , Gui Yewei 
Published: November 2022

Abstract
Aiming at the key technical requirements of ultrasonic measurement of internal temperature of high temperature solid structure, firstly, the mechanical structure of ultrasonic transducer is miniaturized and high-temperature resistant design is carried out, so that it can withstand the high temperature of 800°C. Meanwhile, the multi-waveform, multi-channel and multi-frequency excitation detection is achieved, and the integration of structure and function is realized. In addition, the high-speed data acquisition module adopts a 1GSPS sampling rate acquisition card combined with the phase-based acoustic time integral zero sub-measurement method to achieve the nanosecond acoustic time measurement accuracy required by ultrasonic temperature measurement. Finally, the reconstructed internal temperature field of steel structure is carried out by using the developed electromagnetic ultrasonic temperature measuring instrument and compared with the temperature measuring result of thermocouple, which verifies the reliability of high temperature resistant electromagnetic ultrasonic probe and high-speed acquisition module. The research shows that the integration of ultrasonic temperature measurement technology and the design and development of instruments will provide effective analysis methods, research means and testing tools for exploring the internal temperature parameters of structures.
Detection Technology of Intentional Electromagnetic Co-channel Interference Source
Authors: Su Dongchu , Chang Zengtian , Yang Jian , Chang Bowei , Zhu Zhijun , Qiang Lu 
Published: November 2022

Abstract
The characteristics and action mechanisms of intentional interference sources were analyzed. Then, a fast detection method of intentional co-channel interference was proposed based on such technologies as real-time spectrum analysis, digital phosphor display, and co-channel signal direction-finding. Next, two classical intentional interference scenarios were reproduced, and interference sources were detected fast through the proposed method.
Design of fretting signal acquisition system based on AD7177
Authors: Mo Taiping , Tang Yuan , Su Ying 
Published: November 2022

Abstract
In Fretting is an important research direction in the detection of urban underground space structure. Traditional geophones have three issues with achieving fretting detection in the field, high cost, large size and low accuracy. A fretting signal acquisition system based on AD7177 is proposed to solve the above problems, which takes STM32 as the design core. A decision-making scheme that combines the signal acquisition system with the vibration sensor is introduced, which is used to settle the large size and high cost of the instrument. To improve the system accuracy, the AD7177 high-precision A/D conversion module and GPS are used for signal processing and positioning timing respectively. Finally, tests and field experiments were conducted in a state equipped with large storage space and WIFI transmission, which shows the system is convenient and successful. The experimental results show that the scheme is effective, the AD7177-based fretting signal acquisition system has high accuracy and small volume, which has a good ability to complete fretting detection.
Spacecraft hitch detection and health evaluation based on Multivariable Time Series
Authors: Tang Xinye , Jiang Dezhong , Guo Botao 
Published: November 2022

Abstract
In this paper, unsupervised method is studied to solve the problem that it is difficult for spacecraft to obtain tagged hitch data. Firstly, the incremental cross-correlation filtered attribute selection algorithm (ICF) is used to complete the selection of feature subsets of spacecraft multivariate time series (MTS);Then the unsupervised learning model of LSTM-SAE is trained on a large number of normal data; Finally, a complete hitch monitoring and health evaluation system is established and verified on the data of three fault degrees. The feature space of normal data is constructed, and the health state of spacecraft is measured by the reconstruction error of faulted data and the distance of feature space. It solves the problem of predicting and avoiding catastrophic failures of spacecraft under the conditions of lack of prior knowledge, unbalanced data distribution and incomplete failure modes.
Design of signal processing circuit for acoustic Doppler Current Profiler
Authors: Jiang Chuansheng , Zou Jun , Liu Yanping , Li Bing 
Published: November 2022

Abstract
according to the measurement principle and performance requirements of acoustic Doppler velocity profile, a circuit for weak frequency signal processing is designed. The measurement principle, circuit structure, data comparison before and after signal processing and frequency measurement accuracy data analysis are introduced. The performance comparison and application of the instrument are carried out according to the relevant standards. The experimental results show that the signal processing circuit realizes the constant amplitude amplification of the wide dynamic range frequency signal, and the processed signal is converted by A / D and then measured by digital frequency to obtain a high frequency accuracy. In the application of channel flow measurement, the velocity profile can reflect the change trend of cross-section velocity and complete the accurate measurement of flow rate. It shows that the flow profile instrument based on the signal processing circuit can meet the requirements of on-line monitoring of flow velocity and flow of river and channel.
Research on fault diagnosis of gas steam boilers based on deep neural networks
Authors: Deng Cong , Li Xu-Feng , Ji Peng , Li Jing-Sheng , Hou Qun 
Published: November 2022

Abstract
Gas steam boilers are special equipment subjected to high temperature and pressure, it is particularly important to detect and deal with operation faults in time. Against the 4 types of common fault of gas steam boilers, the fault diagnosis model was established based on deep neural networks (DNN), and the model parameters were optimized and verified by experiments. The results show that the fault diagnosis model performs the best as Tanh of the activation function, 100 of Batch_Size, Adam of Optimizer, 10-5 of learning rate and 0.2 of Dropout since the output accuracy is above 92% and the model begins to converge with iterative times of 12. The accuracy of fault identification of reaches 100% in verification experiments and the model can still effectively recognize the dataset from the early stage which suggests that the fault diagnosis based on deep neural networks has high accuracy and provides a reliable solution for the safety supervision of special equipments.
Research on flight control system hardware in the loop simulation system based on NI hardware platform for Unmanned Aerial Vehicle
Authors: Wu Helong , Cai Mingxi , He Zongke 
Published: November 2022

Abstract
HIL(Hardware in the loop) simulation of UAV(Unmanned Aerial Vehicle) plays an important role in flight control sysrtem development and algorithm verification. Taking the open source flight control system Pixhawk as the research object, this paper establishes a HIL system based on NI(National Instrument) hardware platform. The dynamic model and kinematic model are modeled through Simulink, the online management of simulation model is realized through Veristand, and the online display of model parameters and fault injection are realized through Labview. The simulation system can test the functional performance, reliability and safety of flight control system. The simulation results show that the simulation platform works reliably and has good real-time performance. It can effectively and reliably carry out the HIL of flight control system for UAV.
IGBT Gate Waveform Acquisition Based on Compressed Sensing Technology
Authors: Wang Yifan , Zeng Mingquan , Gong Jinlong , Sun Ming , Wang Yifan , Luo Li , Hu Jiansheng , Ma Junjie 
Published: November 2022

As the core device of power electronic equipment, IGBT (Insulated Gate Bipolar Transistor) is related to the reliability of the system, so its online health monitoring is particularly important. Due to the large amount of data and high sampling rate for IGBT online health monitoring, data transmission has become a major problem, the method of effectively reconstructing the original signal has become one of the current research hotspots. Based on the theory of compressed sensing, the acquisition of IGBT gate waveforms is studied in this paper. First, the theoretical principle of compressed sensing is expounded and analyzed, and the evaluation criteria for signal reconstruction performance are given. Then, from the theory and simulation, the sparseness of IGBT gate drive signals under different sparse bases and different measurement matrices are discussed and analyzed. Next, aiming at the shortcomings of the stagewise weak orthogonal matching pursuit algorithm, a SWOMP algorithm based on the backtracking strategy of different Sigmoid functions is proposed. Simulation and experimental results show that the improved SWOMP4 algorithm has the best reconstruction effect. Finally, the SWOMP4 algorithm is applied to the process of IGBT gate drive signal reconstruction.
This paper mainly collects and reconstructs the IGBT gate drive signal through the improved SWOMP4 algorithm. The designed algorithm has high reconstruction accuracy and can be used in the IGBT module online health status system.
Facile synthesis and ethanol sensing performance of the SnO2 nanoplates
Authors: Li Xiang-Hu , Jin Zhen , Li Dan , Zhang Huan , Xu Min-Da 
Published: November 2022

Abstract
as concluded that the SnO2 nanoplates were synthesized. We characterized the material with XRD, SEM and TEM. It was concluded that the SnO2 nanoplates have good crystallinity, and the size of which is about 5μm. The SnO2 nanoplates exhibit good sensing performance in ethanol detection. There is a lower correct operating temperature (250 °C). And, in a large range of 5-500 ppm, the SnO2 nanoplates display excellent linear sensing performance in ethanol detection. The as-prepared SnO2 nanoplates have superior sensing performance in ethanol detection, such as more rapid response, better repeatability and better sensitivity. Moreover, compared with commercial SnO2 powders, it is expected that the SnO2 nanoplates might become a standout gas sensing material and it owns close relations with the application of actual production and life.
Research on limiting current oxygen sensor based on La2MoWO9
Authors: Li Dan , Yang Wei-Guang , He Chen-Hao , Xie Chen-Zi-Jun , Yang Long-yu , Liu Yu 
Published: November 2022

Abstract
In this paper, an oxygen sensor with La2MoWO9 as the base material and La0.6Sr0.4Fe0.8Co0.2O3 mixed conductor material as the diffusion barrier layer was made by solid state synthesis method. The sensor has the characteristics of low price, low working temperature, simple preparation process, and has a good application prospect. However, there is also the problem of poor stability, which needs to be further studied.
Is biorobotics science? Some theoretical reflections
Authors: Tamborini Marco , Datteri Edoardo 
Published: November 2022

Abstract
In this paper, we ask one fairly simple question: to what extent can biorobotics be sensibly qualified as science? The answer clearly depends on what ‘science’ means and whether what is actually done in biorobotics corresponds to this meaning. To respond to this question, we will deploy the distinction between science and so-called technoscience, and isolate different kinds of objects of inquiry in biorobotics research. Capitalising on the distinction between ‘proximal’ and ‘distal’ biorobotic hypotheses, we will argue that technoscientific biorobotic studies address proximal hypotheses, whilst scientific biorobotic studies address distal hypotheses. As a result, we argue that bioroboticians can be both considered as scientists and technoscientists and that this is one of the main payoffs of biorobotics. Indeed, technoscientists play an extremely important role in 21st-century culture and in the current critical production of knowledge. Today’s world is increasingly technological, or rather, it is a bio-hybrid system in which the biological and the technological are mixed. Therefore, studying the behaviour of robotic systems and the phenomena of animal-robot interaction means analysing, understanding, and shaping our world. Indeed, in the conclusion of the paper, we broadly reflect on the philosophical and disciplinary payoff of seeing biorobotics as a science and/or technoscience for the increasingly bio-hybrid and technical world of the 21st century.