检索结果-内蒙古大学图书馆

Annual Conference of Industrial Electronics Society

作者： K. Kiguchi H. Henrichfreise K.-P. Hesseler Department of Advanced Systems Control Engineering Saga University Japan Cologne Laboratory of Mechatronics University of Applied Sciences Cologne Germany

Friction is an undesired phenomenon in many mechanical systems. Feedforward of a suitable estimate of friction is an effective method to compensate for the friction-dependent position errors in the steady state. It is not easy, however, to make a precise friction model because of the complexity of static and dynamic characteristics of friction such as the Stribeck effect, the Dahl effect, stick-slip motion, and so on. In this paper, we propose an effective friction compensation method for the electromechanical drive systems. In the proposed method, neural networks are applied in parallel to a linear observer, for the electromechanical positioning system (EMPS) which is used at the Cologne Laboratory of mechatronics (CLM) at the University of Applied Sciences Cologne for experimental investigation of position control schemes for compliant systems with friction.

关键词： Friction Neural networks Laboratories mechatronics Error correction Vehicle dynamics EMP radiation effects Robots DC motors Neurons

来源：评论

学校读者我要写书评

暂无评论

Jerk derivative feedforward control for motion systems

Jerk derivative feedforward control for motion systems

引用

American control Conference (ACC)

作者： M. Boerlage R. Tousain M. Steinbuch Faculty of Mechanical Engineering Control Systems Technology Group Eindhovan University of Technology Eindhoven Netherlands Philips CM Mechatronics Research Eindhoven Netherlands

This work discusses reference trajectory relevant model based feedforward design. For motion systems which contain at least one rigid body mode and which are subject to reference trajectories with mostly low frequency energy, the proposed feedforward controller improves tracking performance significantly. The feedforward controller may be of much lower order than the plant. The proposed feedforward controller is introduced using a model of an industrial XY-table as an application example.

关键词： Motion control control systems Resonance Servomechanisms Frequency Electrical equipment industry Tracking Industrial control Adaptive control Error correction

来源：评论

学校读者我要写书评

暂无评论

controller design for active closed-loop control of cavity flows

Controller design for active closed-loop control of cavity f...

引用

42nd AIAA Aerospace Sciences Meeting and Exhibit

作者： Van, P. Debiasi, M. Yuan, X. Caraballo, E. Efe, M.O. Ozbay, H. Samimy, M. DeBonis, J. Camphouse, R.C. Myatt, J.H. Serrani, A. Malone, J. Collab. Center for Control Science Ohio State University Department of Electrical Engineering Ohio State University Columbus OH 43210 Department of Mechanical Engineering Ohio State University Columbus OH 43210 NASA Glenn Research Center Brookpark OH 44135 Air Force Research Laboratory Air Vehicles Directorate WPAFB OH 45433 Dept. of Mechatronics Engineering Atilim University Ankara Turkey

In this paper we discuss feedback controller design issues for active control of shallow cavity flows. Linear controllers, such as H ∞, PID, and Smith predictor based controllers are designed and tested experimentally. The ineffectiveness of using fixed linear models in the design of linear controllers for the cavity flows is demonstrated via experimental results. In order to better address this problem, we are in the process of developing a nonlinear model of the cavity flow dynamics using Proper Orthogonal Decomposition (POD). We briefly discuss control issues related to the class of feedback systems involving this type of nonlinear plants.

关键词： Feedback control

来源：评论

学校读者我要写书评

暂无评论

Development of coordinated scheduling strategy with end-to-end response time analysis for the CAN-based distributed control systems

Development of coordinated scheduling strategy with end-to-e...

引用

2004 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

作者： Kim, Hongryeol Kim, Joomin Kim, Daewon Kim, Hongseok Lee, Hogil Dept. of Info. Control Engineering Myongji University San38-2 Nam-Dong Yongin-Si Kyongki-Do Korea Republic of Mechatronics Team Korea Inst. of Industrial Technology 35-3 Hongcheon-Ri Cheonan-Si ChungcheongNam-Do Korea Republic of

ISBN: (纸本)0780384636

In this paper, a coordinated scheduling strategy is proposed to reduce end-to-end response time in distributed control systems based on the CAN(controller Area Network). For the strategy, the analysis of practical end-to-end response time in the worst case is performed priory with considering real-time multi-task operating systems. The end-to-end response time is composed of response time in real-time multi-task scheduling of the operating systems, response time in the CAN communications, and delay caused by asynchronous timing between the operating systems and the CAN communications. The coordinated scheduling strategy is focused on the reduction of the delay caused by asynchronous timing between operating systems and network communications. An Online deadline assignment strategy is proposed for the coordination. In the strategy, periods are defined as hard deadlines, and the deadlines of the DMS(Deadline Monotonic Scheduling) are defined as a soft deadlines with online assignments for the coordination. The performance enhancement with the coordinated scheduling strategy is validated through simulation tests, by performance comparison between a system with the proposed coordinated scheduling strategy and the system without the coordinated scheduling strategy.

关键词： Distributed parameter control systems

来源：评论

学校读者我要写书评

暂无评论

Fuzzy Based Auto-coagulation control Through Photometric Dispersion Analyzer

引用

Journal of Harbin Institute of Technology(New Series) 2004年第2期11卷 164-167页

作者：白桦李圭白 School of Environmental Engineering Tongji UniversityShanghai 200092 China School of Mechatronics Engineering Harbin Institute of Technology Harbin 150006 China 3. School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 Chinahe main role of water treatment plants is to supply high-quality safe drinking water. Coagulation is one of the most important stages of surface water treatment. The photometric dispersion analyzer(PDA) is a new optical method for flocculation monitoring and is feasible to realize coagulation feedback control. The on line modification of the coagulation control system's set point(or optimum dosing coagulant) has influenced the application of this technology in water treatment plant for a long time. A fuzzy control system incorporating the photometric dispersion analyzer was utilized in this coagulation control system. Proposed is a fuzzy logic inference control system by using Takagi and Sugeno's fuzzy if-then rule for the self-correction of set point on line. Programmed is the dosing rate fuzzy control system in SIEMENS small-scale programmable logic controller. A 400 L/min middle-scale water treatment plant was utilized to simulate the reaction. With the changes of raw water qualitythe set point was modified correctly in time as well as coagulant dosing rate and residual turbility before filtration was eligible and stable. Results show that this fuzzy inference and control system performs well on the coagulation control system through PDA.

The main role of water treatment plants is to supply high-quality safe drinking water. Coagulation is one of the most important stages of surface water treatment. The photometric dispersion analyzer(PDA) is a new optical method for flocculation monitoring, and is feasible to realize coagulation feedback control. The on line modification of the coagulation control system' s set point( or optimum dosing coagulant) has influenced the application of this technology in water treatment plant for a long time. A fuzzy control system incorporating the photometric dispersion analyzer was utilized in this coagulation control system. Proposed is a fuzzy logic inference control system by using Takagi and Sugeno' s fuzzy if-then rule for the self-correction of set point on line. Programmed is the dosing rate fuzzy control system in SIEMENS small-scale programmable logic controller. A 400 L/min middle-scale water treatment plant was utilized to simulate the reaction. With the changes of raw water quality, the set point was modified correctly in time, as well as coagulant dosing rate, and residual turbility before filtration was eligible and stable. Results show that this fuzzy inference and control system performs well on the coagulation control system through PDA.

关键词： coagulation dosing rate control photometric dispersion analyzer fuzzy control fuzzy logic inference optimum water treatment

来源：评论

学校读者我要写书评

暂无评论

Development of coordinated scheduling strategy with end-to-end response time analysis for CAN-based distributed control systems

Development of coordinated scheduling strategy with end-to-e...

引用

IEEE International Workshop on Intelligent Robots and Systems (IROS)

作者： Hongryeol Kim Joomin Kim Daewon Kim Hongseok Kim Hogil Lee Department of Information Control Engineering Myongji University Yongin si Kyunggi South Korea Korea Institute of Industrial Technology Mechatronics Team Cheonan Chungcheongnam South Korea

In this paper, a coordinated scheduling strategy is proposed to reduce end-to-end response time in distributed control systems based on the CAN (controller area network). For the strategy, the analysis of practical end-to-end response time in the worst case is performed priory with considering real-time multi-task operating systems. The end-to-end response time is composed of response time in real-time multi-task scheduling of the operating systems, response time in the CAN communications, and delay caused by asynchronous timing between the operating systems and the CAN communications. The coordinated scheduling strategy is focused on the reduction of the delay caused by asynchronous timing between operating systems and network communications. An online deadline assignment strategy is proposed for the coordination. In the strategy, periods are defined as hard deadlines, and the deadlines of the DMS (deadline monotonic scheduling) are defined as soft deadlines with online assignments for the coordination. The performance enhancement with the coordinated scheduling strategy is validated through simulation tests, by performance comparison between a system with the proposed coordinated scheduling strategy and the system without the coordinated scheduling strategy.

关键词： Distributed control Delay estimation Operating systems Delay effects Job shop scheduling Real time systems Timing Information analysis control engineering Performance analysis

来源：评论

学校读者我要写书评

暂无评论

Modelling of physical systems for the design and control of mechatronic systems

引用

Annual Reviews in control 2003年第1期27 I卷 87-117页

作者： Van Amerongen, Job Breedveld, Peter Control Engineering Drebbel Institute for Mechatronics University of Twente P.O. Box 217 7500 AE Enschede Netherlands

Mechatronic design requires that a mechanical system and its control system be designed as an integrated system. This contribution covers the background and tools for modelling and simulation of physical systems and their controllers, with parameters that are directly related to the real-world system. The theory will be illustrated with examples of typical mechatronic systems such as servo systems and a mobile robot. Hands-on experience is realised by means of exercises with the 20-sim software package (a demo version is freely available on the Internet). In mechatronics, where a controlled system has to be designed as a whole, it is advantageous that model structure and parameters are directly related to physical components. In addition, it is desired that (sub-)models be reusable. Common block-diagram- or equation-based simulation packages hardly support these features. The energy-based approach towards modelling of physical systems allows the construction of reusable and easily extendible models. This contribution starts with an overview of mechatronic design problems and the various ways to solve such problems. A few examples will be discussed that show the use of such a tool in various stages of the design. The examples include a typical mechatronic system with a flexible transmission and a mobile robot. The energy-based approach towards modelling is treated in some detail. This will give the reader sufficient insight in order to exercise it with the aid of modelling and simulation software (20-sim). Such a tool allows high level input of models in the form of iconic diagrams, equations, block diagrams or bond graphs and supports efficient symbolic and numerical analysis as well as simulation and visualisation. Components in various physical domains (e.g. mechanical or electrical) can easily be selected from a library and combined into a process that can be controlled by block-diagram-based (digital) controllers. This contribution is based on object-oriented mo

关键词： mechatronics

来源：评论

学校读者我要写书评

暂无评论

Reconfigurable control for ship steering

引用

Proceedings of the Institution of Mechanical Engineers Part M: Journal of engineering for the Maritime Environment 2003年第1期217卷 25-29页

作者： Omerdic, E. Roberts, G.N. Vukic, Z. Mechatronics Research Centre University of Allt-yr-yn Campus PO Box 180 New-portNP20 5XR United States Faculty of Electrical Engineering and Computing Department of Control and Computer Engineering in Automation University of Zagreb Zagreb Croatia

This paper is concerned with the application of a heuristic approach in the design of a fault-tolerant control system for ship steering. It proposes an advanced reconfigurable control system (RCS) for ship course changing/keeping and track keeping, robust to faults in actuator, gyrocompass and global positioning system (GPS) in the presence of disturbances (waves and currents). The proposed control scheme uses a reference model for compensation of signals from fault sensors and a compensator for reducing the loss of the control performance produced by a fault in the steering machine. In the case of the occurrence of the fault in one or more components, this control system minimizes loss in the control performance and gives enough time for operators to take appropriate action in order to reduce the risk of safety hazards and avoid severe consequences of the fault. The unavoidable penalty of degradation in control performance was found to be acceptable. © 2003 Institution of Mechanical Engineers.

关键词： Linear control systems

来源：评论

学校读者我要写书评

暂无评论

Analysis of a surface wave acoustic motor

Analysis of a surface wave acoustic motor

引用

IEEE Symposium (IUS) Ultrasonics

作者： P.J. Feenstra P.C. Breedveld Control Engineering Laboratory Drebbel Institute for Mechatronics and Faculty of EEMCS University of Twente Enschede Netherlands

Based on first principles a dynamical contact model of a surface acoustic wave motors is built. Besides slider behavior also contact point behavior is obtained, which is hard to acquire experimentally. The contact point behavior is used to explain slider behavior like threshold amplitude and like oscillations that are observed in experimental set-ups.

关键词： Surface acoustic waves Acoustic waves Stators Frequency control engineering Laboratories mechatronics Lubrication Planar motors Substrates

来源：评论

学校读者我要写书评

暂无评论

Model-based feedforward for motion systems

Model-based feedforward for motion systems

引用

IEEE Conference on control Technology and Applications (CCTA)

作者： M. Boerlage M. Steinbuch P. Lambrechts M. van de Wal Faculty of Mechanical Engineering Control Systems Technology Group The Netherlands Mechatronics Research Philips CFT Eindhoven Netherlands Philips CFT Mechatronics Research The Netherlands

This paper considers model-based feedforward for motion systems. The proposed feedforward controller consists of an acceleration feedforward part and an inverse dynamics model of flexible modes. Based on analysis and H/sub /spl infin// model-based feedforward design, the inverse dynamics can be restricted to a second order filter in the form of a skew notch even if the motion system has more parasitic modes. The benefit of this is an on-line tuning possibility. Tracking errors and settling times can be reduced significantly compared to acceleration feedforward.

关键词： Acceleration Servomechanisms Adaptive control Motion control control systems Filters Feedback Robust stability Tracking Mechanical engineering

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：