检索结果-内蒙古大学图书馆

第三十四届中国控制会议

作者： Peng Wang Zhen Zhang Peng Yan Department of Mechanical Engineering Tsinghua University Beijing Key Lab of Precision/Ultra-Precision Manufacturing Equipment and Control Tsinghua University State Key Laboratory of Fluid Power Transmission and Control Zhejiang University School of Automation Science and Electrical Engineering Beihang University School of Mechanical Engineering Shandong University

ISBN: (纸本)9781467374439

This paper presents a novel measurement method for a large stroke X Y nano-positioner(mm-stoke and nanometric accuracy). Based on recently proposed flexure-based large stroke X Y nanopositioner, a low cost and simple method is proposed to measure large stroke two-dimensional motion stage. The important feature lies in only two optical gratings are adopted to achieve the measurement for a planner motion, where each optical grating is mounted on a T-shaped flexure beam rather than the ending stage. Moreover the resulting major measurement error is effectively compensated by the designed linear relationship between the stroke and parasitic motion. The experimental results of a 1.0 millimeter circular trajectory tracking is achieved by the proposed method.

关键词： Nano-positioning,Measurement,Mechatronics,Motion control

来源：评论

学校读者我要写书评

暂无评论

Cross-coupled contour tracking control with time-varying internal model of a parallel bi-axis servo gantry

Cross-coupled contour tracking control with time-varying int...

引用

The Society of Instrument and control Engineers Annual Conference 2015

作者： Yichen Zhou Zhen Zhang Peng Yan Department of Mechanical Engineering Tsinghua University Beijing Key Lab of Precision/Ultra-Precision Manufacturing Equipment and Control Tsinghua University State Key Laboratory of Fluid Power Transmission and Control Zhejiang University School of Automation Science and Electrical Engineering Beihang University School of Mechanical Engineering Shandong University

This paper presents an integrated control strategy for high precision contour tracking of a newly developed parallel bi-axis servo gantry system. In specific, this integrated control method includes a time-varying internal-model-based controller designed to achieve frequency-varying trajectory tracking for each axis, a disturbance observer intended to compensate friction caused by linear guideways, and a modified variable-gain cross-coupling controller for improvement of contour *** simulation comparative results validate the ability of this integrated control strategy to achieve high precision contour performance.

关键词： Cross-coupled control,Disturbance observer,Friction compensator,Internal model,Mechatronics

来源：评论

学校读者我要写书评

暂无评论

Improved SVD Matching Based On Delaunay Triangulation and Belief Propagation

Improved SVD Matching Based On Delaunay Triangulation and Be...

引用

第27届中国控制与决策会议

作者： Jianfang Dou qin Qin Zimei Tu Xishuai Peng Yuanxiang Li Lijun Li Fangquan Shen Department of Automation and Mechanical and Electrical engineering School of Intelligent Manufacturing and Control EngineeringShanghai Second Polytechnic University Department of Aerospace Information and Control School of Aeronautics and AstronauticsShanghai Jiao Tong University NO.3 Institute of the Second Artillery Armament Academy

ISBN: (纸本)9781479970186

Finding correspondences between pair of images of the same scene is a key problem in computer *** matching images undergo viewpoint change,partial occlusion,clutters and illumination change,there will be a lot of mismatches due to the limited repeatability and discriminative power of *** this paper,we propose a robust matching algorithm that can remove false matches and propagate the correct ones to obtain more matches,thus improve the matching ***,extract SURF(Speeded Up Robust Features) descriptors from the input two images,which can be used to build the proximity *** perform SVD(Singular Value Decomposition) on the proximity matrix to obtain the initial ***,refine the initial matches by the unique property of Delaunay triangulation that can produce the maximum clique of the two Delaunay ***,recover the lost matches with the constraint of dual graph of *** results on Oxford datasets indicate that our algorithm can improve the match performance compared to the RANSAC-based method.

关键词： Image matching Singular Value Decomposition Speeded Up Robust Features Delaunay triangulation Belief Propagation

来源：评论

学校读者我要写书评

暂无评论

Integrated Model of Water Pump and Electric Motor based on BP Neural Network

Integrated Model of Water Pump and Electric Motor based on B...

引用

Conference on Industrial Electronics and Applications

作者： Qiang Zhu Guoli Li Rui Zhou School of Electrical Engineering and Automation Anhui University Hefei China National Engineering Laboratory of Energy-Saving Motor & Control Technology Anhui University Hefei China Engineering Research Center of Power Quality Ministry of Education Anhui University Hefei China

ISBN: (纸本)9781479984671

In order to construct integration model of combination pump hydraulic model with motor electromagnetic model, this paper use BP neural network structure pump hydraulic fitting model. Train BP neural network on pump performance according to the experimental test data, to make neural network accordance with the characteristics of pump input and output. Then combine with motor electromagnetic calculation model into integration model which could be used to analysis the performance of water pump.

关键词： BP neural network water pump integrated model

来源：评论

学校读者我要写书评

暂无评论

Evolving Ensemble of Fuzzy Models for Multivariate Time Series Prediction

Evolving Ensemble of Fuzzy Models for Multivariate Time Seri...

引用

IEEE International Conference on Fuzzy Systems

作者： Lourenco Bueno Pyramo Costa Israel Mendes Enderson Cruz Daniel Leite the Dept. of Graduate Program in Electrical Engineering Pontifical Catholic University of Minas Gerais Belo Horizonte Brazil the Dept. of Electronics Federal Center for Technological Education of Minas Gerais Nepomuceno Brazil the Control and Automation Research Group Dept. of Engineering Federal University of Lavras Brazil

ISBN: (纸本)9781467374293

Weather modeling and prediction has been quite a challenge over the years. Predictions based on climatic models whose dynamical behavior is nonlinear, nonstationary, and based on high order difference equations is a tough task and usually requires a demanding and non-intuitive tuning expertise. This paper suggests an ensemble of evolving fuzzy models for multivariate time series prediction. The proposed ensemble approach is able to model the weather dynamics from data streams concerning variables such as wet bulb temperature, atmospheric pressure, maximum temperature, and relative humidity of the air. The purpose is to predict rainfalls 5 days ahead while providing a linguistic description of the reasoning used to give the predictions. Empirical results show that the ensemble-based fuzzy evolving modeling approach outperforms other evolving approaches in terms of accurate predictions.

关键词： Evolving Ensemble Fuzzy Models Multivariate Time Series Prediction

来源：评论

学校读者我要写书评

暂无评论

An improved particle swarm optimization algorithm for chaotic synchronization based on PID control

引用

Journal of Information and Computational Science 2014年第9期11卷 3177-3186页

作者： Zou, Dexuan Wang, Xin Duan, Na School of Electrical Engineering and Automation Jiangsu Normal University Xuzhou 221116 China Information and Control Engineering Faculty Shenyang Jianzhu University Shenyang 110168 China

In this study, we propose a variant of Particle Swarm Optimization (PSO) algorithm for chaotic synchronization based on PID control. The new method, called Improved Particle Swarm Optimization (IPSO) algorithm employs the global best position to execute a global searching strategy such that the position updating is well finished. In addition, the IPSO introduces a mutation operation in terms of the personal best positions. By combining the global searching strategy and mutation operation, the global searching capacity of the IPSO is enhanced, and it can easily get rid of the local optimums. The performance of the IPSO is investigated on four test examples and its results are compared with those of the PSO. The empirical analysis of the experimental results demonstrates the efficiency of the IPSO. Copyright © 2014 Binary Information Press.

关键词： Three term control systems

来源：评论

学校读者我要写书评

暂无评论

An unconventional unmanned autonomous blimp: Design, modeling and simulation

Communications in Computer and Information Science

引用

Communications in Computer and Information Science 2014年 474卷 356-367页

作者： Song, Yi Mai, Jingeng Yang, Siqiang Tan, Jiaying Huang, Yan Wang, Qining Intelligent Control Laboratory College of Engineering Peking University Beijing100871 China School of Automation Science and Electrical Engineering Beihang University Beijing100191 China

ISBN: (纸本)9783662452882

In this paper, we present the design and simulation of an unconventional unmanned autonomous blimp. The dynamic model of the tri-ellipsoid blimp is built with mechanism analysis method. Based on dynamic modeling of the blimp, a PID controller against the disturbance during autonomous flight is designed. Simulation results show that the controller is valid with optimal control parameters. © Springer-Verlag Berlin Heidelberg 2014.

关键词： Three term control systems

来源：评论

学校读者我要写书评

暂无评论

A study on tracking peformance of the pneumatic system with enhanced NPID controller

A study on tracking peformance of the pneumatic system with ...

引用

Asian control Conference

作者： Sy Najib Sy Salim Aliza Che Amran A. A. M. Faudzi Z. H. Ismail M. F. Rahmat N. H. Sunar Shamsul Anuar Shamsudin Department of Control Instrumentation and Automation Faculty of Electrical Engineering Universiti Teknikal Malaysia Melaka Department of Control Universiti Teknikal Malaysia Melaka Department of Control and Mechatronic Engineering Universiti Teknologi Malaysia Centre for Artificial Intelligence & Robotics (CAIRO) Universiti Teknologi Malaysia Kuala Lumpur Malaysia Faculty of Mechanical Engineering Universiti Teknikal Malaysia Melaka

An investigation on the performance of enhanced Nonlinear Proportional Integral Derivative (ENPID) controller is presented in this paper. The study is focused on the potential of the controller to perform well in tracking set point of pneumatic actuator system. Two control strategies of the ENPID are considered in this paper, namely Multi-rate NPID (MN-PID) and Self-regulation NPID (SN-PID). These control strategies are tested against NPID and conventional PID controller. Also, the dead-zone compensation (DZC) is applied to the system to overcome the dead-band of the valve. Feed forward path is also included to improve the tracking performance. Two different input signals i.e. sinusoidal and S-curve waveforms are used to evaluate the performance of the techniques. To further examine the controller performance, the frequency and amplitude of the sinusoidal test signal are varied. The effectiveness of the proposed controllers is verified through simulation and experimental studies.

关键词： Pneumatic actuators Valves Mathematical model Trajectory Pistons Fuzzy logic

来源：评论

学校读者我要写书评

暂无评论

A discrete-time current controller for permanent magnet synchronous motor drives

A discrete-time current controller for permanent magnet sync...

引用

Annual Conference of Industrial Electronics Society

作者： Türker Türker Ümit Büyükkeleş Hüseyin Meşe Faruk Bakan Dept. of Control & Automation Engineering Yildiz Technical University Istanbul Turkey Defence System Technologies ASELSAN A.S. Ankara Turkey Dept. of Electrical Engineering Yildiz Technical University Istanbul Turkey

A discrete-time current controller is presented for the current loop of the permanent magnet synchronous motor drives. Firstly, the difference equations of current errors are obtained for constant reference values. Then, a dead-beat controller is designed to drive the dq-axes currents to the desired values. Discrete-time integral action with an anti-windup scheme is added to the dead-beat structure to achieve a better steady-state behaviour. In order to improve the transient properties of the controller, a current prediction scheme based on dead-beat structure is also introduced to the controller. Finally, the proposed controller is implemented through numerical simulations to illustrate the effectiveness for both transient and steady-state responses.

关键词： Torque Pulse width modulation Delays Numerical simulation Uncertainty Current measurement Current control

来源：评论

学校读者我要写书评

暂无评论

Time-varying universe based linguistic dynamic analysis of timing design for parallel traffic light

Time-varying universe based linguistic dynamic analysis of t...

引用

International Conference on Informative and Cybernetics for Computational Social Systems (ICCSS)

作者： Hong Mo Fei-Yue Wang Fenghua Zhu School of Electrical and Information Engineering Changsha University of Science and Technology Changsha CN State Key Lab. of Management and Control for Complex Systems Institute of Automation CN

Reasonable timing design for traffic light can induce and maintain the transportation systems in good order. How to allocate the time are the keys. In the paper, the theory of time-varying universe is used to describe the circle time, and corresponding fuzzy sets on the universe are also discussed to modeling the situation of traffic flow, then the parallel traffic management and control methods which are dynamic with the time change are presented. A simulation example are provided to analyze the linguistic dynamic evolution of timing design of traffic light when the traffic flow is change with time-varying for an intersection.

关键词： Timing Pragmatics Vehicle dynamics Fuzzy sets Complex systems Vehicles

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：