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检索条件"任意字段=3rd International Conference on Robotics and Control Engineering, RobCE 2023"

共 3900 条记录，以下是1541-1550 订阅

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Equal-peak optimization of Pendulum Tuned Mass Damper using time-delay feedback control 3

Equal-peak optimization of Pendulum Tuned Mass Damper using ...

引用

3rd international conference on Mechanical Design and Simulation, MDS 2023

作者： Wang, Changli Zhao, Yanying School of Aircraft Engineering Nanchang Hangkong University China

ISBN: (纸本)9781510664890

Pendulum tuned mass dampers are widely used in structural vibration reduction because of their convenience in installation, maintenance and replacement, economy and practicality. It suppresses or eliminates the vibration of the main system by tuning the natural vibration frequency of the pendulum to close to the control frequency of the main system, so that the pendulum produces the opposite vibration of the main system. In this paper, through the multi-objective optimization design of the passive damping system with undamped main system and the active damping system with damped time-delay feedback, the equal peak control of the amplitude-frequency response curve of the main system and the effective control of the difference between the formant and the anti-formant are realized. The results show that the oscillating amplitude of the pendulum tuned mass damping system is suppressed in a wide frequency range by equal-peak optimization control with time-delay feedback. By controlling the difference between the resonance peak and the anti-resonance peak, the flatness of the amplitude-frequency response curve is guaranteed. © 2023 SPIE.

关键词： Pendulums

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UAV Formation control Based on Multi-strategy Search Improved Pigeon-Inspired Optimization 1

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3rd international conference on Autonomous Unmanned Systems, ICAUS 2023

作者： Sheng, Lei Li, Hao Niu, Quanmin Han, Yu Tao, Menggao Qi, Yingchuan Air Force Early Warning Academy Wuhan150001 China Unit 95894 of PLA Beijing100000 China Unit 95438 of PLA Meishan620000 China

ISBN: (数字)9789819711079

ISBN: (纸本)9789819711062

Unmanned aerial vehicles (UAV) formation cooperation operation has gradually become the current hot spot of UAV application. This paper proposes a method for autonomous formation control of UAV based on multi-strategy search improved pigeon-inspired optimization (MSIPIO). The MIPIO algorithm has a significant improvement in convergence accuracy and can effectively avoid falling into local optimal solutions. Firstly, the flight dynamics of the leader-follower are modeled separately;Secondly, using the artificial potential field (APF) method to maintain the ideal formation;Then, based on the pigeon-inspired optimization (PIO) algorithm, completing the optimization solution of the UAV control quantity. The structure of PIO has been adjusted on the basis of the basic PIO thoughts, Using multi-strategy search to improve PIO and comparing it with relevant PIO algorithms in the test function, verifying the effectiveness of MSIPIO optimization. Finally, the effectiveness of the control system is verified by simulation experiment. © Beijing HIWING Scientific and Technological Information Institute 2024.

关键词： Flight dynamics

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Research on Nonlinear Trajectory Tracking control Method for Autonomous Vehicles 3

Research on Nonlinear Trajectory Tracking Control Method for...

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3rd international conference on Applied Mathematics, Modeling and Computer Simulation, AMMCS 2023

作者： Xie, Jinli Chongqing Metropolitan College of Science and Technology Chongqing China

ISBN: (纸本)9781643684581

The trajectory tracking model of autonomous vehicles is usually simplified to a linear model, and then the matching controller is designed. However, the simplification process of the model requires a lot of assumptions, which are difficult to be established. For this reason, a nonlinear trajectory tracking control method is proposed. Firstly, a system error dynamics model is established based on the vehicle kinematics model and dynamics model, and the steady state control law for the vehicle trajectory tracking control is deduced on this basis. Then, the compensation control law based on the vehicle lateral displacement error is further designed to improve the system's anti-interference. The effectiveness of the proposed control method is verified by comparing with the commonly used controllers for vehicle trajectory tracking, and the results show that the control accuracy and convergence speed of the proposed control method are effectively improved. © 2023 The Authors.

关键词： Autonomous vehicles

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Tunable Filter Development and Application Research 3rd

Tunable Filter Development and Application Research

引用

3rd international Joint conference on Energy, Electrical and Power engineering, CoEEPE 2023

作者： Lei, Xiao Hou, Jingwen Li, Yushu Zhou, Hang Yuan, Jiaxin Laboratory of Hydro-Wind-Solar Multi-Energy Control Coordination China Yangtze Power Co. Ltd. Wuhan China Laboratory of Hydro-Wind-Solar Multi-Energy Control Coordination Wuhan University Wuhan China

ISBN: (纸本)9789819739394

The proportion of new energy in current power systems is increasing, and the use of adjustable filters has significant importance for improving grid harmonic problems, maintaining grid stability, performing reactive power compensation, and effectively enhancing grid operation performance and reliability. This article explores the principles and characteristics of different harmonic mitigation methods in passive and active filtering, and proposes using adjustable components to replace fixed capacitors or fixed inductors to constitute adjustable filters specifically for passive LC filters. It also introduces the principles and characteristics of several adjustable capacitors and adjustable reactors. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Reactive power

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Laboratory Setup for Solid -State Battery Pressure Characterization and control 3

Laboratory Setup for Solid -State Battery Pressure Character...

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3rd Modeling, Estimation and control conference (MECC)

作者： Cleary, Timothy P. Wang, Daiwei Wang, Donghai Fathy, Hosam K. Rahn, Christopher D. Penn State Univ Dept Mech Engn University Pk PA 16801 USA Univ Maryland Dept Mech Engn College Pk MD 20742 USA

ISBN: (纸本)9781713872344

As high-energy-density solid-state cells approach maturity, battery management systems must be developed to maximize the performance of these cells by monitoring and/or controlling their mechanical stress. This paper describes the design, testing, and control of a lab-scale solid-state battery cell testing system. Solid-state lithium-sulfur cells are characterized under constant volume and constant stress conditions. The testing system also uses axial displacement feedback for mixed volume/stress control and dynamic switching between control modes as a function of state-of-charge and/or charge/discharge conditions.

关键词： Solid-state batteries pressure-based SOC battery volume/force control

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A Decentralized Secure Blockchain-based Privacy-Preserving Healthcare Clouds and Applications 3

A Decentralized Secure Blockchain-based Privacy-Preserving H...

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3rd international conference on Electrical, Computer and Communication engineering, ECCE 2023

作者： Hussen Wadud, Md. Anwar Rahman, Anichur Islam, Md. Jahidul Amir-Ul-Haque Bhuiyan, T.M. Hossain, Md. Jobaer Hossen, Rakib Constituent Institute of the University of Dhaka Green University of Bangladesh Bangladesh University of Business & Technology Bangabandhu Sheikh Mujibur Rahman Digital University Deptment of Computer Science and Engineering Bangladesh

ISBN: (纸本)9798350345360

In recent times, Blockchain (BC) technology has been one of the fastest-growing technologies poised to perform a significant role in the near future. In the age of Cloud Computing (CC) solutions, the Internet of Things (IoT), and big data analytics, BC guarantees data safety, transaction security, and self-regulation development. CC solutions initiated its role in the health industry due to its flexibility and efficient energy consumption paradigm. Nevertheless, CC operations have an issue with preserving confidential data and sharing patients' critical medical data with other healthcare facilities. BC provides solutions in regard to cloud protection and privacy issues of such decentralization features coupled with information protection and privacy, while the cloud contributes towards the resolution of BC's measurability and efficiency difficulties, thereby introducing the idea of an innovative BC-Cloud integration to track and preserve the electronic health records of patients in a reliable manner. In this paper, we present a BC-cloud combination for the electronic healthcare service to provide healthcare officials with the impulses following the rise of this most delinquent model, propose an arrangement of surviving structures, and their applicability for more reliable medical healthcare services. We then evaluate the improvement stages and co-operations and focus on the analysis difficulties for the combined BC-cloud structure, potential solutions, and prospective analysis objectives. This paper's outcome will benefit the health service enterprise to create and improve data administration systems to address patient concerns reliably. © 2023 IEEE.

关键词： Access control

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Knee Stiffness in Assistive Device control at Quiet Stance: A Preliminary Study 3

Knee Stiffness in Assistive Device Control at Quiet Stance: ...

引用

3rd Modeling, Estimation and control conference (MECC)

作者： Sreenivasan, Gayatri Zhu, Chunchu Yi, Jingang Rutgers State Univ Dept Elect & Comp Engn Piscataway NJ 08854 USA Rutgers State Univ Dept Mech & Aerosp Engn Piscataway NJ 08854 USA

ISBN: (纸本)9781713872344

The paper explores the use of knee stiffness as a parameter in the design of wearable knee assistive devices for augmenting human postural balance. The knee moment-angle relationship is utilized to estimate the quasi-stiffness of the knee. The measurement methods are carefully chosen to be non-invasive without rigid joint attachment to allow observation of unimpeded quiet stance. The relationship between identified biomechanical parameters and computed stiffness estimates is analyzed, and the resulting estimates are employed in the controller design of a stiffness-based knee assistive device. The paper also investigates the biomechanical response of the human body to the modulation of applied stiffness in the presence of varied visual stimuli. This research is a crucial first step toward designing knee-based assistive devices to enhance human postural balance in destabilizing environments. Copyright (c) 2023 The Authors. This is an open access article under the CC BY-NC-ND license (https://***/licenses/by-nc-nd/4.0/)

关键词： Knee Joint Stiffness Knee Wearable Assistive Device Quiet Standing

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Colonic Polyp Segmentation Algorithm Based on Improved SegFormer Network

Colonic Polyp Segmentation Algorithm Based on Improved SegFo...

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Computer, control and robotics (ICCCR), international conference on

作者： Shiyu Xiang Lisheng Wei Gang Gao Xiuwen Tao School of Electrical Engineering Anhui Polytechnic University Wuhu China Anhui Key Laboratory of Electric Drive and Control Wuhu China

To solve the problem that factors such as the similar color of polyps and background in colon polyp images and the different sizes of polyps affect the segmentation accuracy, an improved SegFormer, U-SegFormer, is proposed for colon polyp image segmentation. Firstly, in the feature fusion phase of the decoder, features at multiple scales from the encoder output are fused in a cascade fashion and the feature representation is enhanced using the Unified Attention Fusion Module; Then, training the network in combination with transfer learning, using a loss function combining Dice Loss and Focal Loss to mitigate the effect of positive and negative sample imbalance on model training. Finally, the U-SegFormer was compared with other segmentation models, and the experimental results showed that the polyp segmentation method based on the U-SegFormer model was superior to the current mainstream segmentation methods and had a certain potential for clinical application.

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controlling system design for flight atmospheric parameter test 3

Controlling system design for flight atmospheric parameter t...

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3rd international conference on Mechanical, Electronics, and Electrical and Automation control, METMS 2023

作者： Geng, Manghe Xu, Tao Zhang, Hexuan Manufacturing Engineering Department AVIC Shenyang Aircraft Corporation Shenyang110034 China Department of Automation Shenyang Aerospace University Shenyang110136 China

ISBN: (纸本)9781510666689

In response to the need for calibration of airborne air data equipment, a flight air parameter test system based on STM32F103C8T6 single-chip microcomputer and closed-loop pressure control is designed. The host device is a PC, and the client device is a control system composed of STM32F103C8T6 single-chip microcomputer. The host computer develops controlling system software with LabVIEW. As the kernel module, STM32F103C8T6 single-chip microcomputer is chosen to design the client computer circuit. Besides, this paper designs the adjustable voltage output circuit with TLV5630, the power module, the switch controlling circuit with the relay module, the PWM module with the IO port of STM32F103C8T6 and the RS232 communication circuit with SP3232. Finally, the effectiveness of the controlling system is illustrated by the software. © 2023 SPIE.

关键词： Pressure control

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Research on Image Lightweight Binocular Ranging

Research on Image Lightweight Binocular Ranging

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Computer, control and robotics (ICCCR), international conference on

作者： Gang Gao Lisheng Wei Quangan Hu School of Electrical Engineering Anhui Polytechnic University Wuhu China Anhui Key Laboratory of Electric Drive and Control Wuhu China Anhui Conch Group Co. Ltd. Wuhu China

Aiming at the problems of low speed and accuracy of traditional binocular ranging methods, this paper discusses the influence of a filtering sampling preprocessed lightweight image of binocular ranging. Firstly, the image to be detected is processed with different levels of Gaussian filtering and up-down sampling, and different levels of preprocessed images are obtained. Secondly, based on YOLOv5 object detection and recognition, MATLAB binocular calibration and stereo rectification are carried out, and then SGBM and BM stereo matching algorithms are respectively combined to realize the binocular ranging of the two methods. Finally, the relationship between binocular ranging range, speed, and accuracy is analyzed under the condition of image preprocessing. The results show that the image preprocessed by one upsampling and downsampling can achieve a simultaneous improvement in the speed and accuracy of the range measurement.

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