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British Telecom technology journal 1998年第3期16卷 125-133页

作者： Azvine, B. Wobcke, W. Manchester University United Kingdom Dynamics and Control Research Group Engineering Department Manchester University United Kingdom Contr. and Instrum. Research Group Staffordshire University United Kingdom Intelligent Systems Research Group BT Laboratories United Kingdom Dept. of Engineering Mathematics Bristol University United Kingdom Europ. Netwk. Excellence U. University of Queensland Australia University of Essex United Kingdom Basser Dept. of Computer Science University of Sydney Australia

This paper considers the abstract features of human/machine interaction systems that are required for the production of intelligent behaviour. A conceptual architecture is proposed for a subset of intelligent systems called human-centred intelligent systems (HCISs) and it is argued that such systems must be autonomous, robust and adaptive in order to be intelligent. Soft computing is proposed as a promising new technique that can be used to build HCISs, and examples are presented where this is already being done. Finally, flexibility is defined to be a combination of the often-conflicting requirements of robustness and adaptability, and it is argued that the right balance between these two features is necessary to achieve intelligent behaviour.

关键词： Learning systems

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On-Line Genetic Auto-Tuning of PID controllers for an Active Magnetic Bearing Application

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IFAC Proceedings Volumes 1998年第4期31卷 207-209页

作者： P. Schroder B. Green N. Gnum P.J. Fleming Dept. Automatic Control and Systems Engineering The University of Sheffield Mappin Street Sheffield S1 3JD UK. Tel +44 114 222 5250 Fax +44 114 273 1729 Rolls-Royce and Associates Limited PO Box 31 Derby DE24 8BJ UK. Tel: +44 1332 661 461 x5959 Fax: +44 1332 622 948

A prototype large electrical machine running on active magnetic bearings is described. This rig is controlled by a digital signal processor connected by a custom interface to MATLAB/Simulink hosted by a PC. The on-line tuning of a PID controller is set up as an optimisation problem from MATLAB and a multiobjective genetic algorithm is used to drive the optimisation. The results of an optimisation are presented and analysed.

关键词： magnetic bearings hardware-in-the-loop design on-line controller tuning genetic algorithms

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Royal Academy of Medicine in Ireland - Section of Bioengineering - Proceedings of meeting held in Dundalk, Co. Louth, in February 1998.

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IRISH JOURNAL OF MEDICAL SCIENCE 1998年第4期167卷 256-276页

作者： [Anonymous] Orthopaedic Research Unit The Queen’s University of Belfast School of Biomedical Sciences The Queen’s University of Belfast Howmedica International Ltd. Raheen Industrial Estate Limerick Department of Mechanical Engineering Trinity College Dublin 2 Mater Hospital Dublin 7 Orthopaedic Research Laboratory Århus University Hospital Denmark University of Limerick Limerick Limerick Regional Hospital Raheen Limerick Boston Scientific Ireland Ltd. Galway Department of Mechanical Engineering University College Dublin Dublin Department of Electrical and Electronic Engineering University College Dublin Dublin Bioengineering Research Centre Department of Mechanical Engineering University College Dublin Dublin Northern Ireland Bio-Engineering Centre (NIBEC) School of Electrical and Mechanical Engineering University of Ulster Newtownabbey Department of Mechanical & Manufacturing Engineering The Ashby Building The Queen’s University of Belfast Johnson and Johnson Professional Orthopaedic Division Queensway England Department of Cardiology and Department of Medical Physics & Bioengineering St. James’s Hospital Dublin 8 Burke House Ellison Street Castlebar Royal College of Surgeons in Ireland Department of Surgery Beaumont Hospital Dublin Department of Electronic and Electrical Engineering Trinity College Dublin 2 Department of Aeronautical Engineering The Queen’s University of Belfast Vascular Unit Belfast City Hospital Department of Medical Physics and Bioengineering St. James’s Hospital Dublin 8 Centre for Biomedical Electronics Department of Electronic and Computer Engineering University of Limerick Limerick Department of Mechanical and Aeronautical Engineering University of Limerick Limerick School of Health Sciences University of Ulster Ireland School of Physiotherapy University of Ulster Newtownabbey Clinical Engineering NI Medical Physics Agency Belfast and Radiology Royal Victoria Hospital Musgrave Park Hospital University of Limerick Biomedical Institute (ULBMI) Uni

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Intelligent multi-modal systems

British Telecom technology journal

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British Telecom technology journal 1998年第3期16卷 134-144页

作者： Tsui, K.C. Azvine, B. Djian, D. Voudouris, C. Xu, L.Q. Hong Kong Polytechnic University Hong Kong University of Essex King's College London United Kingdom BT Laboratories United Kingdom ATM Traffic Management United Kingdom Manchester University United Kingdom Dynamics and Control Research Group Engineering Department Manchester University United Kingdom Contr. and Instrum. Research Group Staffordshire University United Kingdom Intelligent Systems Research Unit BT Laboratories United Kingdom Dept. of Engineering Mathematics Bristol University United Kingdom Europ. Netwk. Excellence U. Institut d'Informatique d'Entreprise France Oxford University Robotics Research Group United Kingdom University of Nice France Ecole des Mines de Paris France Natl. Technical University of Athens Greece University of Essex United Kingdom Department of Computer Science University of Essex United Kingdom Intelligent Systems Research Group BT Laboratories United Kingdom Southeast University Nanjing China Institute of Acoustics Chinese Academy of Sciences Beijing China University of East Anglia United Kingdom University of Sussex King's College London United Kingdom University of Abertay Dundee United Kingdom

Research in human/computer interaction has mainly focused on natural language, text, speech and vision primarily in isolation. Recently there have been a number of research projects that have concentrated on the integration of such modalities using intelligent reasoners. The rationale is that many inherent ambiguities in single modes of communication can be resolved if extra information is available. This paper describes an intelligent multi-modal system called the Smart Work Manager. The main characteristics of the Smart Work Manager are that it can process speech, text, face images, gaze information and simulated gestures rising the mouse as input modalities, and its output is in the form of speech, text or graphics. The main components of the system are the reasoner, a speech system, a vision system, an integration platform and the application interface. The overall architecture of the system will be described together with the integration platform and the components of the system which include a non-intrusive neural network based gaze-tracking system. The paper concludes with a discussion on the applicability of such systems to intelligent human/computer interaction and lessons learnt in terms of reliability and efficiency.

关键词： Learning systems

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Improved textured images segmentation using an energy functional 9th

Improved textured images segmentation using an energy functi...

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9th International Conference on Image Analysis and Processing, ICIAP 1997

作者： Grau, Antoni Saludes, Jordi Dept. of Automatic Control and Computer Engineering Polytechnic University of Catalonia UPC Barcelona Catalonia Spain Dept. of Applied Mathematics II Polytechnic University of Catalonia UPC Barcelona Catalonia Spain

ISBN: (纸本)3540635076

In this paper we present a new classification and image segmentation system based on the addition of a variational method to a classic clustering algorithm. This system constitutes an improvement respect traditional segmentation methods. Often due to the nature of the texture features obtained from an image, the segmentation results are not quite precise. If this happens, using the energy functional and its minimization can improve the segmentation. This functional takes into account the information in the feature space and the information in the 2D image domain. The extracted characteristics from the image are texture features that have been defined in order to obtain an admissible trade-off between their discriminant capacity and their effectiveness to be implemented in a vision board to operate at real time. We show some results to appreciate this improvement in the segmentation using the energy functional. © Springer-Verlag Berlin Heidelberg 1997.

关键词： Clustering algorithms

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BLOCK DIAGONAL FORM AND BLOCK DIAGONAL controlLER OF NONLINEAR SYSTEMS

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Chinese Journal of Aeronautics 1997年第1期10卷 51-57页

作者： Zhao Guorong Zhang Fuen(dept. of automatic control, Harbin Institute of Technology, Harbin, China, 150001)Gu Wenjing(Naval Aeronautical engineering Academy, Yantai, Shantong, China, 264001) Dept. of Automatic Control Harbin Institute of Technology Harbin 150001 China Nav. Aero. Engineering Academy Yantai Shantong 264001 China

A block diagonal form about a nonlinear system is defined. Based on the de finition, a design method ca1led block diagonal controller (BDC) is proPOsed bo feedbacklinearization. Thus, a linearization design of a class of nonlinear system can be simply re-alized. The result of design has been proved by mathematical simulation of a certain anti-ship missile.

关键词： feedback linearization nonlinear systems flight control controllers

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Recognition of patient anaesthetic levels: neural network systems, principal components analysis, and canonical discriminant variates

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ARTIFICIAL INTELLIGENCE IN MEDICINE 1997年第2期11卷 155-173页

作者： Linkens, DA Vefghi, L Intelligent Systems Laboratory Department of Automatic Control and Systems Engineering University of Sheffield Sheffield SI 3JD United Kingdom Intelligent Systems Laboratory Automatic Ctrl./Systems Engg. Dept. University of Sheffield Sheffield S1 3JD United Kingdom

The goal of this study was to examine the ability of Neural Networks to recognise the levels of anaesthetic state of a patient. Data obtained under different levels of anaesthesia have been modelled for the purpose. It is shown that inferential parameters can be used to recognise the levels of anaesthesia. In addition to demonstrating the ability of neural networks for classification we were interested in understanding the classification strategy discovered by the neural networks. Multivariate data analysis techniques, namely Principal Components Analysis and Canonical Discriminant Variates, were applied to analyse the resultant networks. (C) 1997 Elsevier Science B.V.

关键词： anaesthesia neural network systems principal components analysis canonical discriminant variates

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Homing guidance with terminal angular constraint against nonmaneuvering and maneuvering targets

Homing guidance with terminal angular constraint against non...

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Guidance, Navigation, and control Conference, 1997

作者： Kim, Byung Soo Lee, Jang Gyu Han, Hyung Seok Park, Chan Gook Automatic Control Research Center and School of Electrical Engineering Seoul National University Seoul151-742 Korea Republic of Dept. of Electrical and Electronic Engineering Soonchunhyang University Asan336-745 Korea Republic of Dept. of Control and Instrumentation Engineering Kwangwoon University Seoul139-701 Korea Republic of

The guidance problem with terminal angular constraint is addressed. The guidance goal in the problem is to null miss distance and to achieve a desired impact attitude angle, simultaneously. In order to fulfill the guidance goal, a new homing guidance law, a modified proportional navigation, is proposed. Its performance is analyzed by employing a Lyapunov-like function with the sliding mode control methodology. The efficiency of the proposed guidance law is shown by proving the optimality in the sense that it minimizes the integral of the square of the pursuer acceleration. To account for randomly maneuvering targets, the modified PN with target maneuver compensation is also proposed. Its performance is analyzed by a similar approach. We show that the guidance command is bounded if the target executes a constant acceleration. © 1997 by Jang Gyu Lee.

关键词： Sliding mode control

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Robust Decentralized control of MIMO Systems in the Frequency Domain

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IFAC Proceedings Volumes 1997年第21期30卷 421-426页

作者： Alena Kozáková Dept. of Automatic Control Systems Faculty of Electrical Engineering and Information Technology Slovak University of Technology Bratislava Slovak Republic

The paper presents an application-oriented robust decentralized control design technique based upon the sufficient condition for robust stability (SCRS) of systems under decentralized control (DC) which is fulfilled using parameter tuning of fixed-structure local controllers. Graphical interpretation of the SCRS provides two useful stability criteria used to test stability of the overall system as well as stability of subsystems. Theoretical results are illustrated in a case study.

关键词： Robust control Decentralized control Stability robustness Frequency domain

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Optimal Positioning for Mobile Platform/Manipulator Systems using Genetic Algorithms

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IFAC Proceedings Volumes 1997年第3期30卷 197-202页

作者： M.W. Chen A.M.S. Zalzala Robotics Research Group Dept. of Automatic Control and Systems Engineering University of Sheffield Sheffield SI 3JD UK

This paper presents a genetic-based approach to multi-criteria position and configuration optimisation of mobile manipulator systems. Optimisation criteria include obstacle avoidance, least joint torque norm, manipulability and joint torque distribution. Due to the competition among various criteria, the multi-criteria optimisation problem typically exhibits many local minima. The emphasis of the paper is put on using genetic algorithms to search for global optimum and solve the minilnax problem for torque distribution. Various simulations for a system including a three-link lnanipulator mounted on a mobile platform show that the proposed genetic algorithm approach performs better than conventional methods.

关键词： robotics genetic algorithems mobile manipulators motion planning parallel algorithms

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