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Annual business and news: Beginning the 32nd year

Journal of Guidance, control, and Dynamics 2009年第1期32卷 1-7页

作者： Schmidt, George T. Akella, Maruthir Balakrishnan, S.N. Campbell, Mark E. Clarke, John-Paul Colgren, Richard D. Crassidis, John L. Doman, David B. Eke, Fidelis O. Enns, Russell J. Gawronski, Wodek Hablani, Hari B. Leitner, Jesse A. Ping, Lu MacDonald, Malcolm McFarland, Michael B. Melton, Robert G. Mitchell, James Mukhopadhyay, Vivekanand Sasiadek, Jurek Z. Schaub, Hanspeter Wise, Kevin A. United States NATO Systems and Electronics Technology Panel Lecture Series on Low Cost Navigation Sensors and Integration Technology U.S. Air Force Office of Scientific Research United States United States American Automatic Control Council United States Sibley School of Mechanical and Aerospace Engineering Cornell University United States School of Aerospace Engineering Air Transportation Laboratory Georgia Institute of Technology United States Lockheed Martin Aeronautics Company Palmdale CA United States United States Wright-Patterson Air Force Base Dayton OH United States Davis United States Apache Longbow Jet Propulsion Laboratory California Institute of Technology United States GSFC United States Department of Aerospace Engineenng Iowa State University United States Raytheon Electronic Systems United States Department of Aerospace Engineering Pennsylvania State University United States NASA Langley Research Center United States Indian Institute of Technology India Department of Aerospace Engineering Carleton University Canada International Federation of Automatic Control Robotics Technical Committee Joint Robotics and Control Systems Societies Chapter Ottawa Canada X-45 Joint-Unmanned Combat Air System Program

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Compromises between feasibility and performance within linear MPC

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IFAC Proceedings Volumes 2008年第2期41卷 3713-3718页

作者： J.A. Rossiter Yihang Ding Automatic Control and System Engineering University of Sheffield UK

This paper explores the issues of feasibility and performance within predictive control. Conventional thinking is that there is typically a trade off between performance and the volume of the feasible region. However, this paper seeks to show that the trade off is often not as stark as might be expected and in fact one can sometimes gain huge amounts in feasibility with an almost negligible loss in performance while using a simple and conventional MPC algorithm.

关键词： Constraints Feasibility Performance Computational Efficiency Contours

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Efficient planning of autonomous robots using hierarchical decomposition

Efficient planning of autonomous robots using hierarchical d...

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ICINCO 2008 - 5th International Conference on Informatics in control, Automation and Robotics

作者： Rungger, Matthias Stursberg, Olaf Spanfelner, Bernd Leuxner, Christian Sitou, Wassiou Institute of Automatic Control Engineering Technische Universität München 80333 Munich Germany Software and System Engineering Technische Universität München 80333 Munich Germany

ISBN: (纸本)9789898111319

This paper considers the behavior planning of robots deployed to act autonomously in highly dynamic environments. For such environments and complex tasks, model-based planning requires relatively complex world models to capture all *** dependencies. The efficient generation of decisions, such that realtime requirements are met, has to be based on suitable means to handle complexity. This paper proposes a hierarchical architecture to vertically decompose the decision space. The layers of the architecture comprise methods for adaptation, action planning, and control, where each method operates on appropriately detailed models of the robot and its environment. The approach is illustrated for the example of robotic motion planning.

关键词： Robot programming

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Dynamic Simulation of Indoor Rowing Exercise for Paraplegics

Dynamic Simulation of Indoor Rowing Exercise for Paraplegics

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Asia International Conference on Modeling & Simulation

作者： Zakaria Hussain M.O. Tokhi S. Gharooni Department of Automatic Control and System Engineering University of Sheffield UK

This paper presents the development of an FES-assisted indoor rowing exercise model designed for persons with spinal cord injury (SCI). A modified indoor rowing machine and humanoid are modelled using the Visual Nastran dynamic simulation software. The humanoid model is designed based on anthropometric data. The knee and elbow trajectories are obtained for both normal rowing sequence and rowing sequence with voluntary upper body effort. The model developed is evaluated via the torque required at the knee joint and elbow joint throughout the rowing cycle. The model required an adequate amount of torque in order to produce a smooth rowing manoeuvre. The performance of the model developed indicates that the model can be used for future development of FES-assisted indoor rowing exercise.

关键词： Biological system modeling Joints Cardiovascular diseases Computational modeling Humans Knee Elbow Torque Psychology Asia

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Modelling of Muscle Extension and Flexion for FES-Assisted Indoor Rowing Exercise

Modelling of Muscle Extension and Flexion for FES-Assisted I...

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Asia International Conference on Modeling & Simulation

作者： Zakaria Hussain M.O. Tokhi Department of Automatic Control and System Engineering University of Sheffield UK

This paper presents the development of physiological and mathematical model of muscle extension and flexion induced by functional electrical stimulation (FES) for indoor rowing exercise. Three segmental models with nine mono-articular and bi-articular muscle groups are developed to drive hip, knee and ankle extension and flexion. The developed muscle models are evaluated under the dynamic simulation of FES-assisted indoor rowing exercise. The muscle forces and active joint moments generated by each muscle group during rowing manoeuvres are recorded and analysed. In view of good results obtained, it is suggested that the muscle models developed can be used as artificially activated muscle models for future development of FES-assisted indoor rowing exercise.

关键词： Muscles Biological system modeling Hip Knee Mathematical model Neuromuscular stimulation Cardiovascular diseases Humans Asia systems engineering and theory

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Typical control curricula and using software for teaching/assessment: a UK perspective

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IFAC Proceedings Volumes 2008年第2期41卷 10331-10336页

作者： J.A. Rossiter D. Giaouris R.J. Mitchell P. McKenna Automatic Control and System Engineering University of Sheffield UK University of Newcastle University of Reading Glasgow Caledonian University

This paper describes some of the preliminary outcomes of a UK project looking at control education. The focus is on two aspects: (i) the most important control concepts and theories for students doing just one or two courses and (ii) the effective use of software to improve student learning and engagement. There is also some discussion of the correct balance between teaching theory and practise. The paper gives examples from numerous UK universities and some industrial comment.

关键词： control teaching control curricula software assessment survey

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A novel approach to attain the true reusability of the code between different PLC programming tools

A novel approach to attain the true reusability of the code ...

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IEEE International Workshop on Factory Communication systems (WFCS)

作者： E. Estevez M. Marcos E. Irisarri F. Lopez I. Sarachaga A. Burgos Automatic Control and System Engineering Department ETSI University of the Basque Country Spain

Industrial Process Measurement and control systems are used in most of the industrial sectors to achieve production improvement, process optimization and time and cost reduction. Integration, reuse, flexibility and optimization are demanded to adapt to a rapidly changing and competitive market. In fact, standardization is a key goal to achieve these goals. The international standardization efforts have lead to the definition of the IEC 61131 standard. Part 3 of this standard defines a software model for defining automation projects as well as 5 programming languages. Nowadays, a major part of Programmable Logic controllers (PLC) vendors follows this standard, although each programming tool adds particularities and stores the automation project in different manner. But, although they may use the same software model and the same programming languages, source code reuse is not available. This work presents an infrastructure that allows transferring source code from one PLC programming tool to any other transparently to the users. The proposal consists of a textual expression of the software model and the programming languages, as well as the mechanisms, based on XML technologies, to achieve tool interoperability.

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Discrete Simulation of Flexible Plate Structure Using State-Space Formulation

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系统仿真学报 2008年第19期20卷 5141-5146页

作者： S. Md. Salleh M. O. Tokhi Department of Automatic Control and System Engineering The University of Sheffield Sheffield S3 1JD U. Kingdom Faeulty of Mechanical and Manufacturing Engineering University of Tun Hussein Onn Malaysia 86400 Johor Malaysia

This paper presents the development of dynamic simulation of a flexible plate structure with various boundary conditions. A flexible square plate is considered. A finite-difference method is used to discretise the governing partial differential equation formulation describing its dynamic behaviour. The model thus developed has been validated against characteristic parameters of the plate. The model thus developed is further formulated using discrete state-space representation, to allow easy and fast implementation for simulating the dynamic behaviour of the plate with various boundary conditions. The simulation algorithm thus developed is validated, and accurate results with representation of the first five modes of vibration of the plate have been achieved. The algorithm thus developed is used in subsequent research work as a platform for development and verification of suitable control strategies for vibration suppression of flexible plate structures.

关键词：复杂系统模拟技术平面结构分析方法系统结构

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A model for energy predictions of a hotel room

A model for energy predictions of a hotel room

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20th European Modeling and Simulation Symposium, EMSS 2008

作者： Corzo, Adriana Acosta González Santos, Ana Isabel Zamarreño Cosme, Jesuás M. Álvarez Castelló, Víctor Automatic Control and Computation Department Electrical Faculty ISPJAE C/ 114 47011 Marianao C. Habana Cuba System Engineering and Automatic Department Faculty of Science Cuba University of Valladolid c/Prado de la Magdalena s/n 47011 Valladolid Spain Hotel Energy Staff Havana City Cuba

In this paper a model for energy predictions in three different rooms in a Havana hotel is obtained. The method is based in the determination of the cooling load of the hotel rooms using method Radiant Time Series, RT... 详细信息

ISBN: (纸本)8890073268

关键词： Hotels

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A framework for disturbance attenuation on SISO stable/unstable systems

A framework for disturbance attenuation on SISO stable/unsta...

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7th World Congress on Intelligent control and Automation, WCICA'08

作者： Vilanova, R. Arrieta, O. Balaguer, P. Ponsa, P. Telecommunication and System Engineering Department School of Engineering Universitat Autònoma de Barcelona 08193 Bellaterra Barcelona Spain Department of Automatic Control Technical University of Catalonia Av. Vctor Balaguer s/n 08800 Vilanova i la Geltr Barcelona Spain

ISBN: (纸本)9781424421145

This paper presents a generalization of the Internal Model control (IMC) approach to feedforward control action generation. As it is well known, one of the distinctive features of the IMC formulation is the possibility to distinguish between the nominal and uncertain situation. However the consideration of the presence of uncertainty for the feedforward part of the controller is not as simple as it is for the feedback one. In this sense, what is proposed in this communication provides a more sistematic way of addressing a robust feedforward design. In addition, being one of the major drawbacks of the Internal Model control is to have to deal with stable systems, the generalization presented here allows for unstable plants as well as unstable disturbance models. © 2008 IEEE.

关键词： Feedforward control

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