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

共 3898 条记录，以下是791-800 订阅

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Probabilistic RRT Connect with intermediate goal selection for online planning of autonomous vehicles 3

Probabilistic RRT Connect with intermediate goal selection f...

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3rd Modeling, Estimation and control conference (MECC)

作者： Patel, Darshit Eskandarian, Azim Virginia Tech Dept Mech Engn Blacksburg VA 24061 USA

ISBN: (纸本)9781713872344

Rapidly Exploring Random Trees (RRT) is one of the most widely used algorithms for motion planning in the field of robotics. To reduce the exploration time, RRT-Connect was introduced where two trees are simultaneously formed and eventually connected. Probabilistic RRT used the concept of position probability map to introduce goal biasing for faster convergence. In this paper, we propose a modified method to combine the pRRT and RRT-Connect techniques and obtain a feasible trajectory around the obstacles quickly. Instead of forming a single tree from the start point to the destination point, intermediate goal points are selected around the obstacles. Multiple trees are formed to connect the start, destination, and intermediate goal points. These partial trees are eventually connected to form an overall safe path around the obstacles. The obtained path is tracked using an MPC Stanley controller which results in a trajectory with control commands at each time step. The trajectories generated by the proposed methods are more optimal and in accordance with human intuition. The algorithm is compared with the standard RRT and pRRT for studying its relative performance. Copyright (c) 2023 The Authors. This is an open access article under the CC BY -NC -ND license (hdps://***/licenscs/b-nolld/4.0/)

关键词： Motion Planning Model Predictive control Rapidly Exploring Random Trees Autonomous Driving Sampling-Based Algorithms

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Research and Application of Source-network-load-storage Integrated Virtual Power Plant Technology Under the Background of a New Power System 3

Research and Application of Source-network-load-storage Inte...

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3rd international conference on New Energy and Power engineering, ICNEPE 2023

作者： Li, Fang Liu, Zesan Meng, Hongmin State Grid Information and Communication Industry Group Co. Beijing100085 China

ISBN: (纸本)9798350393224

The development of virtual power plant (hereinafter referred to as VPP) technology has broad application prospects. This technology is conducive to promoting the balance of supply and demand in the power grid, promoting the full consumption of new energy, and ensuring the safe and economic operation of the power system. After analyzing the opportunity background of VPP integrating source-network-load-storage, this paper summarizes the main business types of current VPP applications, analyzes the technical requirements for realizing intelligent management of VPP on communication technology, optimization scheduling technology, and market bidding technology, adopts the idea of business capability layered design, and then proposes a reproducible and scalable VPP intelligent management system architecture design method. Finally, this system is applied to the construction case of a park-type integrated VPP with sourcenetwork-load-storage, which verifies the efficiency and advancement of the system. © 2023 IEEE.

关键词： operation and control source-network-load-storage integration virtual power plant

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Research on Key control Technology Based on Two-Way Vehicle-Mounted Electric Vehicle Drive and Charging Integration System 3

Research on Key Control Technology Based on Two-Way Vehicle-...

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3rd IEEE international conference on Electronic Technology, Communication and Information, ICETCI 2023

作者： Wang, Yaya Xia'n Traffic Engineering Institute Xi'an China

ISBN: (纸本)9798350398410

The bidirectional integrated on-board charging system can realize convenient and fast on-board charging without adding additional devices by time-multiplexing and reasonable reconstruction of the drive motor windings and inverters. In this paper, a combination of Silicon Carbide Metal Oxide Semiconductor Field Effect Transistor (SiC-MOSFET) and Silicon Insulated Gate Bipolar Transistor (Si-IGBT) is designed to complete a three-phase four-wire inverter based on dual active bridge (DAB) A bidirectional charging system with cascaded devices. In this paper, a mathematical model of the inverter is established to analyze the reasons for the voltage oscillation of split capacitors under unbalanced loads. At the same time, a decoupling control method between the neutral bridge arm and the other three bridge arms of the bidirectional charger based on virtual impedance under unbalanced load is proposed. The feasibility and effectiveness of the control strategy and the neutral line decoupling control method in different modes are verified by experiments. © 2023 IEEE.

关键词： Electric vehicles

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Hierarchical Distributed Power Flow Analysis of Multi-TSO-Multi-DSO Power Systems 3

Hierarchical Distributed Power Flow Analysis of Multi-TSO-Mu...

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3rd international conference on Energy engineering and Power Systems, EEPS 2023

作者： Su, Yinsheng Tang, Yingqi Zhou, Tinghui Zhen, Hongyue Zhao, Ligang Wang, Changxiang Csg Power Dispatching and Control Center Guangzhou China Csg Electric Power Research Institute State Key Laboratory of Hvdc Technology Guangzhou China

ISBN: (纸本)9798350313857

This paper proposes a hierarchical distributed power flow (DPF) algorithm for multi-TSO-multi-DSO power systems. The algorithm includes a Ward-equivalence-based multi-TSO DPF at the TSO-TSO level and a single-TSO-multi-DSO DPF at the TSO-DSO level. The algorithm also introduces iteration variable correction and approximate TSO-DSO level solution techniques to improve convergence. The proposed algorithm is designed to effectively improve convergence of DPF algorithm for multiple TSOs and DSOs, reduce power losses, and enhance the stability of power systems. Numerical experiments demonstrate the accuracy, convergence, and efficiency of the proposed algorithm and the convergence improvement techniques. © 2023 IEEE.

关键词： Iterative methods

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Study on Landslide Susceptibility Evaluation Based on Improved Multivariable Weighted Model: A Case Study of Lushan County, China 3

Study on Landslide Susceptibility Evaluation Based on Improv...

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3rd IEEE international conference on Software engineering and Artificial Intelligence, SEAI 2023

作者： Zhao, Li Duan, Gonghao Wuhan Institute of Technology School of Computer Science and Engineering Wuhan China Automation for Complex Systems Hubei Key Laboratory of Advanced Control and Intelligent Wuhan China

ISBN: (纸本)9798350337952

The evaluation of regional geological hazard susceptibility is of great significance to the prevention and control of geological hazard. In this paper, the "4-20"Lushan earthquake disaster area as the research area, combined with GIS and characteristics of the research area, through correlation analysis, selected 9 influencing factors as the evaluation factors. The study was conducted using a weighted information volume-logistic regression model (WI-LR). The results were classified into five sensitivity levels: very low, low, medium, high and very high. The results show that the landslide prone areas in Lushan County are concentrated in the area below the middle of the county seat, mostly near rivers, faults and areas with peak acceleration greater than 0.4. Among them, WI-LR model (AUC=0.918) > deterministic factor model (CF =0.908) > weighted information quantity model (WI) (AUC=0.896) > information quantity model I (AUC=0.853) > information quantity logistic regression model I-LR (AUC=0.799). It indicates that WI-LR model has high evaluation accuracy. © 2023 IEEE.

关键词： Hazards

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Research on PID Parameter Self-Tuning Speed control System Based on Grasshopper Optimazation Algorithm-Optimized BP Neural Network 3

Research on PID Parameter Self-Tuning Speed Control System B...

引用

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

作者： Huang, Yifan Huang, Yonghong Jiangsu University School of Electrical and Information Engineering Zhenjiang China

ISBN: (纸本)9798350318180

In response to the limitations associated with conventional PID control strategies, which rely heavily on predetermined design parameters and struggle to provide precise, stable motor speed and current control, particularly in the presence of disturbances, we have developed a novel double closed-loop DC speed regulation system. This system incorporates a self-tuning PID mechanism based on the Grasshopper algorithm optimization neural network. To achieve this, we employed a Back-Propagation (BP) neural network to autonomously fine-tune the parameters of the PID control strategy. Subsequently, during the backpropagation phase of the neural network training, we harnessed the Grasshopper algorithm to optimize these parameters based on a fitness function, leading to the calculation of updated weighting coefficients. Following this iterative process, the output voltage was computed using the incremental PID formula, enabling precise motor control. Remarkably, this approach reduced overshoot by 30%, all without the need for preemptive control parameter adjustments. Moreover, the rise time experienced only a marginal increase of approximately 0.06 seconds. These advancements effectively address the limitations associated with traditional PID control strategies, expanding their utility beyond narrow operational ranges and enhancing performance in complex working conditions. The outcome is a speed regulation system characterized by significantly improved accuracy and robustness, ideally suited to meet the demanding requirements of engineering applications. © 2023 IEEE.

关键词： BP neural network component Grasshopper algorithm PID control Precise control Speed control system

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Application Research of Image Processing Technology in Safe Driving Distance Measurement 3

Application Research of Image Processing Technology in Safe ...

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2023 IEEE 3rd international conference on Data Science and Computer Application, ICDSCA 2023

作者： Gao, Weitao Ma, Tiehua Chen, Changxin Wang, Chenbin Feng, Na North University of China State Key Laboratory of Dynamic Testing Technology Taiyuan030051 China North University of China School of Electrical and Control Engineering Taiyuan030051 China

ISBN: (纸本)9798350341546

In this paper, a new vehicle distance detection technology based on image processing is proposed to solve the traditional ultrasonic vehicle distance detection errors, many blind areas and other problems. The binocular vision sensing system was used to collect real-time images in front of vehicles. The vehicle in front of the collected image is identified through template matching, and the parallax principle is used to calculate the vehicle distance after confirming the presence of the vehicle. Experimental results show that this method can detect the distance between different angles and different positions with high accuracy. © 2023 IEEE.

关键词： accuracy rate Image processing technology operation period safe driving distance

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Image Security Attribute Inference Method Based on Class Attribute Portrait 3

Image Security Attribute Inference Method Based on Class Att...

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3rd international conference on Frontiers of Electronics, Information and Computation Technologies, ICFEICT 2023

作者： Li, Feng Du, Xuehui Liu, Aodi Zhang, Liu Information Engineering University Zhengzhou China

ISBN: (纸本)9798350302356

Access control, the last line of defense for information security, ensures that legitimate users can access resources within only a certain scope of authority. The extraction of high-quality attributes is the key to effectively implementing access control. As a type of unstructured data, the content attribute of an image is highly abstract. The class label of objects in an image can be obtained using image classification based on deep learning. However, this method cannot provide any information about unlearned classes. To infer the known class similar to unknown-class images, this paper proposes an image-oriented class attribute portrait. For a certain known class, a support vector machine is used to learn a classifier in the semantic description space. The class name, description space, and classifier are described as the class attribute portrait, which can be used to infer the content attribute of unknown images. Accordingly, the access control policy is determined. Experimental results confirm the effectiveness of the proposed method for the content attribute inference of unknown-class images. © 2023 IEEE.

关键词： Access control

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Research and Design of Multiple Output Arbitrary Waveform Current Sources for Power Grid Fault Monitoring 3

Research and Design of Multiple Output Arbitrary Waveform Cu...

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3rd international conference on New Energy and Power engineering, ICNEPE 2023

作者： Xu, Jing Yang, Xuemei Li, Peng Feng, Haikuan Pla Army Academy of Artillery and Air Defense The Department of Information and Communication Engineering Hefei China Army Artillery Air Defense Force Academy Xinjiang China

ISBN: (纸本)9798350393224

In the harsh environment of high altitude and high altitude, in order to facilitate the tracking and amplification of current signals in power grid faults, and reduce the burden of maintenance personnel working at high altitude, a current source testing equipment that is convenient to carry, power supply, and can output multiple arbitrary waveforms is designed. The device can stably amplify any waveform signal within a certain frequency range, and ultimately output multiple stable current waveform signals. The process adopts a front-end DC-DC boost, a back-end DC-AC inverter, a current closed-loop negative feedback, and an effective PI control link. Focused on analyzing the parameter design of low-pass filters and PI regulators, resulting in high output waveform fidelity and fast dynamic response ability. The simulation results show that the current source testing equipment has a more stable output waveform and is more optimized than traditional switching power amplifiers. © 2023 IEEE.

关键词： Any waveform Current negative feedback Current source PI control STM32

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Research on Antislip control in P2.5 Hybrid Vehicles 3

Research on Antislip Control in P2.5 Hybrid Vehicles

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3rd international conference on control and Intelligent robotics, ICCIR 2023

作者： Liu, Yiqiang Wang, Dandan Jing, Junchao Huang, Weishan Yang, Yihan Ningbo Geely Royal Engine Components Co. Ltd Zhejiang Ningbo China

ISBN: (纸本)9781510671867

The anti-slip strategy of the P2.5 hybrid system is based on the anti-slip condition determination, the anti-slip torque limit control and anti-slip torque filter control and the clutch coordination. The specific contents are as below: The anti-slip condition determination. The maximum allowable requested torque limit is calculated in advance according to the current ambient temperature, slope, steering angle, speed and other conditions for anti-slip feedforward control, so as to avoid the vehicle slip on the low adhesion road surface. The anti-slip torque limit control. When the body stability system works normally, the anti-slip control is handed over to the body stability system for control. When the body stability system is not working properly, the vehicle controller performs closed-loop control according to the slip error. According to the speed difference between the front wheel and the rear wheel, the acceleration of the left front wheel and the right front wheel, the anti-slip grades are judged and the anti-slip torque is limited based on the difference between the target speed of the output shaft and the actual speed of the actual output shaft and the change rate. The anti-slip torque filter control. In order to rapidly reduce the wheel end driving force to suppress the slip, the torque filtering speed is fast enough to meet the requirements, and the torque filtering at this time needs to be distinguished from the torque filtering at normal times. In order to avoid the frequent jump of the torque filter coefficient caused by anti-slip, the torque filter coefficient calculated by anti-slip is used only when the requested torque and anti-slip torque limit are greater than the threshold. The vehicle results are conducted and show that the anti-slip control strategy can meet the request of the driver and the good drivability performance can be achieved. © 2023 SPIE.

关键词： Torque

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