检索结果-内蒙古大学图书馆

IAENG International Journal of Computer Science 2021年第4期48卷 845页

作者： Chen, Gonggui Zhuo, Handu Hu, Xiaorui Long, Fangjia Long, Hongyu Key Laboratory of Industrial Internet of Things and Networked Control Ministry of Education Chongqing University of Posts and Telecommunications Chongqing400065 China Chongqing Key Laboratory of Complex Systems and Bionic Control Chongqing University of Posts and Telecommunications Chongqing400065 China Chongqing University of Posts and Telecommunications Chongqing400065 China Marketing Service Center State Grid Chongqing Electric Power Company Chongqing401123 China State Grid Chongqing Electric Power Company Chongqing400015 China

Tree seed algorithm (TSA) is a heuristic search algorithm that deals with low-dimensional issues. To overcome the deficiency of TSA in solving environmental economic power dispatch (EED) problem with high-dimensional, nonlinear, and non-convex characteristics, this article proposes a novel multi-objective tree seed algorithm (MONTSA), which possesses superior ability to obtain Pareto optimal solution (POS) sets. For expanding the search space as well as balancing the ability of exploration and exploitation about TSA, three modification strategies, including dynamic search tendency (ST), Gaussian mutation mechanism and variation mechanism of differential evolution algorithm based on Cauchy mutation strategy are adopted to constitute MONTSA. In addition, a constraint handling technique to make sure zero constraint violation and non-inferior sorting approach based on dynamic crowding distance are also put forward. The above introduced strategies allow MONTSA to obtain POS with better distribution. Eight cases, containing four objectives of fuel cost, pollution emission, power loss and fuel cost with valve point effect, are experimented on IEEE 30 bus, IEEE 57 bus and IEEE 118 bus test systems. The results reveal that, compared with MOTSA and MOPSO/MODE, MONTSA is effectively capable of addressing EED problem, which is able to obtain uniformly distributed Pareto frontiers (PFs) and better best compromise solution (BCS). Eventually, the performance indicators GD and HV show that PFs and BCS obtained by MONTSA are more outstanding than the rest of algorithms, with uniform distribution, strong convergence and powerful stability © 2021. IAENG International Journal of Computer Science. All Rights Reserved.

关键词： Heuristic algorithms

来源：评论

学校读者我要写书评

暂无评论

Multi-microgrid Energy Management systems: Architecture, Communication, and Scheduling Strategies

引用

Journal of Modern Power systems and Clean Energy 2021年第3期9卷 463-476页

作者： Bin Zhou Jianting Zou Chi Yung Chung Huaizhi Wang Nian Liu Nikolai Voropai Daosen Xu the College of Electrical and Information Engineering Hunan UniversityChangsha 410082China the Department of Electrical and Computer Engineering University of SaskatchewanSaskatoonSK S7N5A9Canada the College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen 518060China the State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China the Melentiev Energy Systems Institute of Siberian Branch of the Russian Academy of Sciences Irkutsk 664033Russia

The increasing penetration of various distributed and renewable energy resources at the consumption premises,along with the advanced metering,control and communication technologies,promotes a transition on the structure of traditional distribution systems towards cyber-physical multi-microgrids(MMGs).The networked MMG system is an interconnected cluster of distributed generators,energy storage as well as controllable loads in a distribution *** its operation complexity can be decomposed to decrease the burdens of communi-cation and control with a decentralized ***,the multi-microgrid energy management system(MIVIGEIV1S)plays a significant role in improving energy efficiency,power quality and reliability of distribution systems,especially in enhancing system resiliency during contingencies.A comprehensive overview on typical functionalities and architectures of MMGEMS is ***,the emerging communication technologies for information monitoring and interaction among MMG clusters are ***,various energy scheduling and control strategies of MMGs for interactive energy trading,multi-energy management,and resilient operations are thoroughly analyzed and ***,some challenges with great importance in the future research are presented.

关键词： Energy management system(EMS) microgrid communication renewable energy multi-energy system

来源：评论

学校读者我要写书评

暂无评论

Position control of XY precision planar motion table based on input shaping filter

Position control of XY precision planar motion table based o...

引用

作者： HuaLiang Zhang Xu Lu DanPing Jia BingJie Zhao Tao Zhang Yang Liu HongYu Yan Key Laboratory of Networked Control Systems Chinese Academy of Sciences Shenyang Institute of Automation Chinese Academy of Sciences Institutes for Robotics and Intelligent Manufacturing Chinese Academy of Sciences School of Artificial Intelligence Shenyang University of Technology School of Information Science and Engineering Shenyang University of Technology

In order to solve the vibration problem of mining equipment,a Simulink simulation model of current loop,speed loop and position loop of permanent magnet synchronous motor was established to track the input position signal of the motor system.[1] At the same time,the input shaper is introduced into the motor three loop control model to study the vibration suppression effect of the input shaper.[2] The essence of the input shaper is to filter the input ***,the parameters of the input shaper need to be accurately identified and the detailed parameters of the system need to be ***,the problem that the identification accuracy of the system is not enough often makes the parameters of the shaper *** view of the problem that the system identification is not accurate,a method of adjusting and setting input shaper parameters is designed,which is not very dependent on the *** results show that the optimal parameters of the shaper can be selected by the *** with the parameters of the shaper selected according to the identification model,the vibration suppression effect is better.

关键词： system identification input shaping oscillation suppression

来源：评论

学校读者我要写书评

暂无评论

Application of Iterative Learning control in X-Y Precision Planar Motion Platform

Application of Iterative Learning Control in X-Y Precision P...

引用

2021 China Automation Congress, CAC 2021

作者： Yan, Hongyu Jia, Danping Zhang, Tao Zhang, Hualiang Xiong, Yingjie Lu, Xu Liu, Yang School of Artificial Intelligence Shenyang University of Technology Shenyang China School of Information Science and Engineering Shenyang University of Technology Shenyang China Key Laboratory of Networked Control Systems Chinese Academy of Sciences Shenyang China Shenyang Institute of Automation Chinese Academy of Sciences Shenyang China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of Sciences Shenyang China School of Electrica l Engineering Dalian University of Technology Dalian China College Of Information Science and Engineering Northeastern University Shenyang China

ISBN: (纸本)9781665426473

The size of the tracking error is one of the important indicators to measure the control system of the X-Y Precision Planar Motion Platform. Iterative learning control (ILC) can obtain higher tracking accuracy through multiple iterations. However, it is found in experiments that the tracking error of the XY precision motion stage using ordinary PD-type iterative learning will eventually fluctuate in a relatively range, and some high-frequency Noise will seriously affect the stability of the system after many iterations. Aiming at the above problems, a PD-type variable gain open-closed loop ILC with a low-pass filter is proposed. This control scheme can effectively remove high-frequency noise and reduce tracking errors. Finally, a hardware-in-the-loop real-time simulator is used to conduct a comparative experiment. Through comparison with PID controller and ordinary PD-type ILC, the experimental consequence show that this arithmetic has a smaller tracking error than the other two algorithms. © 2021 IEEE

关键词： Low pass filters

来源：评论

学校读者我要写书评

暂无评论

Event-triggered state estimation for T-S fuzzy affine systems based on piecewise Lyapunov-Krasovskii functionals

引用

control Theory and Technology 2019年第1期17卷 99-111页

作者： Meng WANG Jianbin QIU Gang FENG Department of Biomedical Engineering City University of Hong Kong Kowloon Hong Kong China State Key Laboratory of Robotics and Systems & Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin Heilongjiang 150080 China

This paper investigates the problem of event-triggered H∞state estimation for Takagi-Sugeno (T-S) fuzzy affine systems. The objective is to design an event-triggered scheme and an observer such that the resulting estimation error system is asymptotically stable with a prescribed H∞performance and at the same time unnecessary output measurement transmission can be reduced. First, an event-triggered scheme is proposed to determine whether the sampled measurements should be transmitted or not. The output measurements, which trigger the condition, are supposed to suffer a network-induced time-varying and bounded delay before arriving at the observer. Then, by adopting the input delay method, the estimation error system can be reformulated as a piecewise delay system. Based on the piecewise Lyapunov-Krasovskii functional and the Finsler's lemma, the event-triggered H∞observer design method is developed. Moreover, an algorithm is proposed to co-design the observer gains and the event-triggering parameters to guarantee that the estimation error system is asymptotically stable with a given disturbance attenuation level and the signal transmission rate is reduced as much as possible. Simulation studies are given to show the effectiveness of the proposed method.

关键词： Takagi-Sugeno (T-S) fuzzy affine systems event-triggered scheme, piecewise Lyapunov-Krasovskii functional, state estimation

来源：评论

学校读者我要写书评

暂无评论

Numerical simulation analysis and optimization of modular joint temperature field based on ANSYS

Numerical simulation analysis and optimization of modular jo...

引用

第33届中国控制与决策会议

作者： Tao Zhang Wenjing Xu Zizhao Huang Zhenqiang Yang Xiyou Chen Bingjie Zhao Hualiang Zhang School of Electrical Engineering Dalian University of Technology Institutes for Robotics and Intelligent Manufacturing Chinese Academy of Sciences Key Laboratory of Networked Control Systems Chinese Academy of Sciences CRRC DALIAN R&D CO. LTD. University of Chinese Academy of Sciences

In the low-speed state,temperature change has a significant impact on the working efficiency of a harmonic ***,since modular joints used in collaborative robots arbitrarily arrange nodes and meshes through the Finite Element Method(FEM),a temperature field calculation model of the integrated joints was established in this *** utilizing the ANSYS software,a steady-state temperature field distribution of the modular joint was calculated,and the temperature rise of the harmonic reducer was reduced by changing the thermal *** the results demonstrated that the method was effective,which is very important for the safe operation and performance improvement of modular j oints.

关键词： harmonic reducer modular joint Finite Element Method Temperature Field ANSYS

来源：评论

学校读者我要写书评

暂无评论

Magnetic-Actuated Flexible Instruments with Enhanced Bending Capability through Magnetic Distribution Optimization

Magnetic-Actuated Flexible Instruments with Enhanced Bending...

引用

IEEE International Conference on Automation Science and Engineering (CASE)

作者： Yuanrui Huang Runyu Ma Jian Hu Mingcong Chen Jian Chen Hongbin Liu School of Artificial Intelligence University of Chinese Academy of Sciences Beijing China State Key Laboratory of Multimodal Artificial Intelligence Systems Institute of Automation Chinese Academy of Sciences Beijing China School of General Engineering Beihang University Beijing China Centre of AI and Robotics (CAIR) Hong Kong Institute of Science & Innovation Chinese Academy of Sciences

Magnetically-actuated flexible surgical robot has promising applications for ultra-narrow and tortuous orifices. However, maximizing its bending capability and manipulability remains a significant hurdle for clinical use. In this study, we introduce an objective function that can accurately predict a catheter's bending angle with given numbers of internal permanent magnets (IPMs) under various magnetic fields through iterative calculation. The optimal magnets distribution that yields the maximal controllable bending angle, could be determined by optimizing this objective function. The effectiveness of this method is validated through simulations and experiments. Additionally, we propose a simple control scheme to control the bending angle of the magnetically-actuated catheter based on the piecewise constant curvature model. The experimental results demonstrate that the proposed method significantly improves the motion accuracy of the catheter. The catheter with the optimized magnet distribution achieved superior tracking performance with an Integral Absolute Error (IAE) of 1.08 rad·s and maximal controllable bending angle of 150°.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A method for Rapid Deployment of Brushless DC Motor Servo System Model Based on FPGA

A method for Rapid Deployment of Brushless DC Motor Servo Sy...

引用

作者： Wang Bolun Zhang Tao Shi Zhengjin Zhang Hualiang Xie Feng Liu Zihong School of Automation and Electrical Engineering Shenyang Ligong University Shenyang Institute of Automation Chinese Academy of Sciences Key Laboratory of Networked Control Systems Chinese Academy of Sciences Institutes for Robotics and Intelligent Manufacturing Chinese Academy of Sciences School of Electrical Engineering Dalian University of Technology

Recently,with the development of technology and the lucubrate of automation technology,the dependence of modern industry on synchronous motors has gone deep into the *** fact,the current complex control algorithms consume the computing power of the data processing chips and put forward a higher request to the ability of ***,the emphasis of this study lies in a rapid deployment method of a brushless DC motor servo control system based on the model *** using Simulink software to simulate and verify the three-closed-loop servo model of the DC brushless motor,Verilog or VHDL language code will be generated,which can automatically configure the project according to the ***,a drive and control hardware platform based on Xilinx Zynq-7000 chips was built to verify the feasibility,the experimental results indicate that the proposed method can effectively simplify the deployment of complex algorithm codes,reduce the development cycle of brushless DC motor servo system with strong engineering practicability.

关键词： MBD HDL Coder BLDC Servo control

来源：评论

学校读者我要写书评

暂无评论

Real-Time Energy Management of Microgrid System Based on Policy-Based Reinforcement Learning

SSRN

引用

SSRN 2022年

作者： Liu, Ding Zang, Chuanzhi Zeng, Peng Li, Wanting Wang, Xin Liu, Yuqi Xu, Shuqing Key Laboratory of Networked Control System Chinese Academy of Sciences Shenyang110016 China Shenyang Institute of Automation Chinese Academy of Sciences Shenyang110016 China Institute of Robotics and Intelligent Manufacturing Chinese Academy of Sciences Shenyang110169 China University of Chinese Academy of Sciences Beijing100049 China Shenyang University of Technology Shenyang110870 China

Electric power grids are changing from traditional power systems to modern smart integrated power systems. The microgrid (MG) plays a vital role in this process through the integration of distributed renewable energy resources (RESs) and energy storage systems (ESSs). However, wind and solar radiation are characterized by intermittence, randomness and fluctuation. These uncertainties cannot be ignored in microgrids with high penetration of RES and random load demand, which challenges the effective and economic management of MGs. To achieve real-time economically optimal scheduling of microgrids, we proposed a real-time energy management strategy. Unlike traditional model-based approaches, this strategy is learning-based and does not need the knowledge of system uncertainties. The energy management problem of a microgrid is formulated as a Markov decision process (MDP) solved using policybased deep reinforcement learning (DRL). In the proposed RL-based approach, two different neural networks are used. One takes the real-time system state of the microgrid as inputs and makes the decision to obtain the optimal control policy © 2022, The Authors. All rights reserved.

关键词： Deep learning

来源：评论

学校读者我要写书评

暂无评论

Kinetostatic Modeling of Compliant Mechanisms Via Reduced-Mode Cosserat Rod Model

SSRN

引用

SSRN 2023年

作者： Wu, Ke Wang, Wei Li, Xin Hu, Junzhe Chen, Pengyu Cheng, Ran Sun, Qidi Liu, Lifu Zhou, Luna Xu, Xin Zhang, Shucheng Deng, Zicheng Chen, Rui Zheng, Gang INRIA Lille-Nord Europe 40 Avenue Halley Villeneuve d’Ascq59650 France State Key Laboratory of Mechanical Transmission University of Chongqing Chongqing400030 China LS2N - équipe ReV - Robotique Et Vivant Institut Mines Telecom Atlantique Nantes France Chongqing University China Chongqing University University of Cincinnati Joint Co-op Institute Chongqing University Chongqing400044 China Center for Robotics Research University of Cincinnati CincinnatiOH45221 United States MIIT Key Laboratory of Dynamics and Control of Complex Systems Northwestern Polytechnical University Xi’an710072 China Hong Kong

Compliant mechanisms (CMs), which are normally composed of rigid blocks and flexible members, utilize the elastic deflection of all these built-in flexible members, totransfer motion, force and energy. In the current literature, geometrically nonlinear Euler Bernoulli beam theory and its related methods are commonly used for modelingthese flexible members. However, its governing ordinary differential equation (ODE) only considers the main contributor to beam deflections: bending, without taking careof shear and axial stretch along the beam. To take care of more possible strains, Cosserat rod theory, serves as a better alternative for high accuracy. However, it stillsuffers from relatively complex modeling and time-consuming computation. In this paper, we propose a reduced-mode Cosserat rod model to bypass the need ofconducting complex modeling, providing a more compact formulation. The detailed derivations are presented step by step, and we also propose a mode selectionmethod to meet the requirements of different engineering scenarios. Numerical examples are provided to verify the reduced-mode model as well as the feasibility ofmodeling CMs. In particular, modeling flexible springs and related mechanisms has been proved valid via this proposed model. © 2023, The Authors. All rights reserved.

关键词： Boundary value problems

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：