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2024 IEEE International Conference on Consumer Electronics-Asia, ICCE-Asia 2024

作者： Choi, Kihwan Lee, Gwonsoo Kim, Shin Lee, Phil-Yeob Kim, Ho Sung Lee, Jihong Chungnam National University Dept. Mechatronics Engineering Daejon Korea Republic of Research Institute of Future Mobility System Chungnam National University Daejon Korea Republic of Marine Business Division Hanwha Systems Seoul Korea Republic of Marine Research Institute Hanwha Systems Gumi Korea Republic of

ISBN: (纸本)9798331530839

This paper describes a method for improving the performance of the position-based in-motion alignment algorithm used to accurately estimate the initial heading of AUVs (Autonomous Underwater Vehicles). The alignment algorithm in prior research used GPS (Global Positioning system) positions and navigation-estimated positions to correct the heading angle. However, significant errors in some GPS data adversely affected the accuracy of heading bias estimation. To resolve this issue, this study divides the position data into candidate data and validation data. The optimal sample for estimating heading bias is then identified from the candidate data using the validation data. The proposed algorithm is verified through experiments using sensor datasets acquired from real sea experiments. © 2024 IEEE.

关键词： alignment localization underwater navigation

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An clustering routing Algorithm for Wireless Sensor Networks based on Density

An clustering routing Algorithm for Wireless Sensor Networks...

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2022 International Applied Computational Electromagnetics Society Symposium, ACES-China 2022

作者： Xue, Xiaoqin Gang, Meng Zhang, Yafei Lu, Gao Jing, Cao Beijing Aerospace Long March Vehicle Research Institute BeiJing China Beijing Institute of Precision Mechatronics and Controls BeiJing China Beijing Institute of Astronautical System Engineering BeiJing China

ISBN: (纸本)9781665452366

This paper proposed a kind of cluster algorithm DKUCR, which is KUCR algorithm's improvement. In order to solve the problem that in KUCR algorithm, the initial headers' election is not uniform, this paper take the node's density to assist choosing initial cluster center. What's more, with the number of dead nodes increase, KDUCR algorithm adaptively adjust the number of clusters according to the overall network survivability. By comparing the performance of DKUCR algorithm with KUCR, LEACH algorithms, the simulation results show that under the constraint of limited energy, the network operation life of DKUCR algorithm is longer and the energy consumption is slower. © 2022 IEEE.

关键词： Ad hoc networks

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Efficient design and simulation of force analysis of rotary loading platform under automated processing mode 4

Efficient design and simulation of force analysis of rotary ...

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4th International Conference on Robotics, Intelligent Control and Artificial Intelligence, RICAI 2022

作者： Lu, Zhihong Shi, Huijie Zhang, Xiyu School of Electrical Computer and System Engineering Rensselaer Polytechnic Institute TroyNY12180 United States School of Information and Mechatronics Engineering Shanghai Normal University Shanghai201400 China School of Mechanical Engineering Guangxi University Guangxi530007 China

ISBN: (纸本)9781450398343

In industry, rotary lifting platforms are widely used. In this research, two models with different support plate thicknesses are designed for the same type of four support plates rotating lifting platforms. The research simplifies the model to a cantilever beam model to facilitate the theoretical calculation of mechanical parameters of materials. The stresses and deformations of the support plates of the two models under different loads are theoretically calculated. The calculation results all meet the safety requirements of the material. The finite element simulation software ANSYS WORKBENCH is used to verify whether the stresses and deformations of the actual models meet the requirements. The simulation results show that the stress and deformation of the simulation are different from those of the theoretical calculation. The reason lies in the simplification of the theoretical calculation. This difference does not affect the simulation result parameters to meet the design safety requirements. © 2022 ACM.

关键词： Finite element method

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Electromagnetic Field Analysis on Ringing Phenomenon of Inductor Driven by Inverter Considering Stray Capacitance

Electromagnetic Field Analysis on Ringing Phenomenon of Indu...

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2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023

作者： Hou, Xuanda Kawai, Kazuya Dozono, Hiroshi Muramatsu, Kazuhiro Ogishima, Norihiro Minh Thao, Nguyen Gia Fujisaki, Keisuke Gao, Yanhui Guan, Weimin Tian, Cuihua Yuan, Jiaxin Chen, Baichao Saga University Department of Electrical and Electronic Engineering Saga840-0027 Japan Toyota Technological Institute Electromagnetic Energy System Laboratory Nagoya468-0034 Japan Oita University Division of Mechatronics Oita870-1192 Japan Wuhan University School of Electrical Engineering and Automation Wuhan430072 China

ISBN: (纸本)9798350338362

In recent power electronics equipment applying GaN semiconductor, etc., the ringing phenomenon, which is the oscillation in the waveform of current due to the short rising and falling time, increases noise and loss. To design magnetic devices in such power electronics equipment, the ringing phenomenon is tried to be simulated using the electromagnetic field analysis taking account of the stray capacitance in this paper. The stray capacitance of the windings is modeled by taking account of the displacement current, and its effect on ringing phenomenon is examined. It is shown that the ringing phenomenon can be represented by taking account of the stray capacitance. © 2023 IEEE.

关键词： Gallium nitride

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Rover Wheel Assistive Grouser Angle of Attack Effects on Traction Force in Soft Terrain

Rover Wheel Assistive Grouser Angle of Attack Effects on Tra...

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International Colloquium on Signal Processing & Its Applications, CSPA

作者： Intan Nur Aqiella Che Aziz Ahmad Najmuddin Ibrahim Ikmanizardi Basri Yasuhiro Fukuoka Faculty of Manufacturing and Mechatronics Engineering Technology Universiti Malaysia Pahang Pahang Malaysia Department of Mechanical System Engineering College of Engineering Ibaraki University Ibaraki Japan

This paper presents the effects of different grouser angle of attacks on the traction performance of an assistive grouser wheel traversing on soft sandy terrain. This work is an extension from our previous work on assistive grousers attached to a rover wheel to improve performance on soft terrain, where traversing and climbing performance for wheeled rover is improved on steep slopes up to 30-degrees by using assistive grousers rather than conventional fixed grousers. Thus, new experiment correlated with the assistive grouser must be developed for further understanding of the sand-grouser interaction. It was observed that the performance of assistive grousers to reduce sinkage and generate forward traction is influenced by the assistive grousers angle of attack, shape and size. Consequently, for this study we developed a single wheel rover testbed to measure the effects of grouser angle of attack on traction force generated. Grouser attack angles that were experimented are 0,10,20,30 and 40-degrees, on a 0-degree slope sand surface. It was observed that during a grouser’s movement, there are instances where a forward and backward traction was generated depending on the position of the grouser during wheel rotation. This was hypothesized to be caused by the imbalance in traction generation by the inner and outer side of the grouser, and also due to the variance in traction force generation by multiple grousers moving under the sand surface at the same time with different speed due to geometric constraints of the assistive grouser horizontal movement. It was concluded that for 0-degree slope, a 0-degree angle of attack is the most effective, and there is considerable effect of using multiple grousers and distance from the wheel on grouser traction generation. Results indicate that the shape of the grouser could increase the effectiveness of the grouser for a future study.

关键词： Force measurement Shape Force Wheels Robots

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Reliability Assessment of Planetary Pin Position Errors in Large-Scale Aerospace Planetary systems Based on the Kriging Model

Reliability Assessment of Planetary Pin Position Errors in L...

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International Symposium on system and Software Reliability (ISSSR)

作者： Ming Li Puzheng Ji Chengjun Shi Liyang Xie School of Mechatronics Engineering Shenyang Aerospace University Shenyang China Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education Northeastern University Shenyang China

ISBN: (数字)9798331501242

ISBN: (纸本)9798331501259

Planetary gear systems, serving as core components for high-precision power transmission in engineering applications, exhibit compromised reliability due to nonlinear dynamic interactions between component flexibility and manufacturing/assembly errors. Conventional rigid-body assumptions and single-factor analyses fail to address multi-source deformation effects, while Monte Carlo simulations prove computationally prohibitive for multiobjective optimization under complex operating conditions. This study develops a Kriging surrogate-enhanced framework integrating finite element dynamics with flexible planet carrier modeling to resolve the coupling mechanism between carrier deformation and pin positional errors. The methodology enables global multi-condition optimization through systematic acquisition of error-induced load/stress distributions and reliability predictions. The results demonstrate that the tangential position error has a considerably greater impact on reliability than the radial error. The surrogate model achieves computational efficiency improvement while accurately capturing the nonlinear threshold effect of error-reliability. This provides a highly efficient decision-making framework for balancing the manufacturing tolerance and system reliability, and significantly improves the analysis efficiency and engineering applicability.

关键词： Gears Deformation Computational modeling Predictive models Reliability engineering Pins Computational efficiency Reliability Optimization Load modeling

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Attitude error compensation for autonomous vehicles using a state variable error-based smoother

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Journal of Institute of Control, Robotics and systems 2021年第11期27卷 830-834页

作者： Kim, Sun Young Kang, Chang Ho Song, Jin Woo Department of Mechanical Convergence System Engineering Kunsan National University Korea Republic of Kumoh National Institute of Technology Korea Republic of Department of Intelligent Mechatronics Engineering and Convergence Engineering for Intelligent Drone Sejong University Korea Republic of

In this study, the navigation information of a guided missile was calculated using a smoothing algorithm and used for improving the attitude estimation accuracy of the guided missile. The state variables of the backward filter, designed in the fixed interval smoother, were set to attitude errors in the same way as the forward filter of the fixed interval smoother, which was implemented as a linearized Kalman filter algorithm. To verify the performance of the proposed algorithm, simple guided missile simulations were performed, which confirmed that the attitude error of the guided missile was reduced when the fixed interval smoother was applied. © ICROS 2021.

关键词： Autonomous vehicles

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Research on Gear Bending Fatigue Test and Probabilistic Life Prediction Method

Research on Gear Bending Fatigue Test and Probabilistic Life...

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International Symposium on system and Software Reliability (ISSSR)

作者： Ming Li Chengjun Shi Puzheng Ji Liyang Xie School of Mechatronics Engineering Shenyang Aerospace University Shenyang China Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of Education Northeastern University Shenyang China

ISBN: (数字)9798331501242

ISBN: (纸本)9798331501259

The manufacture of precision long life gears is characterized by high cost and long cycle. Moreover, the fatigue tests of gears are time consuming and labor intensive. In order to obtain the life information of gears accurately and conveniently, a model for predicting the probabilistic life of gears is established by using the concept of the minimum order statistic. Furthermore, the probabilistic life relationship among gears with different numbers of teeth is constructed. The life data of specific gears are taken as the input variables of the model, and through the transformation of the model, the probabilistic life of other gears can be obtained. Meanwhile, a gear bending fatigue test is carried out under a constant stress level, and during the test, the methods for monitoring and evaluating gear failures are expounded. Next, two analysis methods of gear failure mechanism and fracture are combined to present the failure mode, and test data are used to illustrate the guiding significance of the model. Finally, the model is verified by the statistical method of random censored data, which proves that the model has good prediction ability and the advantage of handling a small amount of data.

关键词： Analytical models Gears Predictive models Bending Probability Fatigue Probabilistic logic Data models Reliability Stress

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How Fast Can a Robotic Drummer Beat Using Dielectric Elastomer Actuators?

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IEEE Robotics and Automation Letters 2024年第3期9卷 2638-2645页

作者： Wakle, Sudhir Lin, Tse-Han Huang, Shu Basu, Sumit Lau, Gih-Keong National Yang Ming Chiao Tung University International College of Semiconductor Technology Hsinchu30010 Taiwan Indian Institute of Technology Kanpur Mechanical Engineering Department Kanpur208016 India National Yang Ming Chiao Tung University Department of Graduate Degree Program of Robotics Hsinchu30010 Taiwan Industrial Technology Research Institute Mechanical and Mechatronics System Research Labs Zhudong 31057 Taiwan National Yang Ming Chiao Tung University Department of Mechanical Engineering International College of Semiconductor Technology Hsinchu30010 Taiwan

Fast drumming presents a speed challenge to many robotic arms. To simultaneously meet the needs for speed, stroke, and force, we proposed and tested a new double-saddle dielectric elastomer actuator (DEA) as the artificial biceps for driving a lightweight robotic drummer. This work finds that fast force induction is instrumental to the fast drumming by a DEA-driven drumstick. While a pure-shear series of DEA under a large pre-stretch and lateral reinforcement can generate a large isotonic stroke, it is not fast in isometric force induction. Instead, this work found a double-saddle DEA, which is a degenerated two-segment pure-shear DEA with a middle laterally buckled beam, managed to induce a faster isometric force at a 0.5 s down time constant when its ultimate actuation tapered due to substantial strain stiffening effect. As such, this double-saddle DEA-driven drummer suffered less from the dynamic stroke decrement than the 8-segment DEA did. A 4.4 g DEA managed to swing freely a 7.8 g drumstick up to nearly 60° at 6 kV and a maximum tip speed of up to 0.45 m/s. The drumming frequency upon 5.5 kV activation was up to 2-2.5 Hz. In comparison, an 8-segment pure-shear DEA-driven drummer failed to reach the drum when pulsed at 2 Hz. Interestingly, a slower stroke excited multiple drumbeats due to secondary bounces. To achieve a faster drumming to match a human drummer, it is foreseen that a harder dielectric elastomer material will help drive a faster soft robot. © 2016 IEEE.

关键词： Dielectric materials

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Intelligent system for Classifying of Acoustic Endoscopic Images of the Pancreas Based the Analysis of Walsh Spectra of Local Windows 25

Intelligent System for Classifying of Acoustic Endoscopic Im...

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25th International Arab Conference on Information Technology, ACIT 2024

作者： Al-Kasasbeh, Riad Taha Filist, Sergey Shatalova, Olga Kondrashov, Dmitry Sergeevich Shaqadan, Ashraf Korenevskiy, Nikolay A. Al-Habahbeh, Osama M. Tarawneh, Emad Saleh Starkov, Evgeny The University of Jordan Mechatronics Engineering Department Amman Jordan Moscow Polytechnic University Department of Smart Technologies Moscow Russia Southwest State University Department of Biomedical Engineering Kursk Russia Zarqa University Civil Engineering Department Zarqa Jordan University of Business and Technology Jeddah21448 Saudi Arabia South-West State University Russia The University of Jordan Jordan Institute of System Programming The Russian Academy of Sciences Russia

ISBN: (纸本)9798331540012

The purpose of the work is to develop and study methods and algorithms for intelligent classification systems for digital medical images. A method for automatic classification of medical images was developed using neural networks and transparency masks obtained by preliminary image segmentation. This allows you to generate descriptors only for those pixels that are selected by the transparency mask. Also algorithmic and software for classifying medical images has been developed. Experimental testing was carried out on ultrasound images of the pancreas. Differential diagnostics was carried out on control samples. The classes "oncology"and "pancreatitis"were divided. The diagnostic sensitivity by class turned out to be at least 0.8, while the diagnostic specificity is at least 0.85. © 2024 IEEE.

关键词： Ultrasonic imaging

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