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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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Delay-Dependent Robust Stabilization of Uncertain Linear State-Delayed systems via Static Output Feedback *

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IFAC Proceedings Volumes 1998年第19期31卷 1-6页

作者： Xi Li Carlos E. de Souza Alexandre Trofino Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta Canada T6G 2G6 Department of Systems and Control Labóratorio Nacional de Computação Científica - LNCC/CNPq Av. Getúlio Vargas 333 25651-070 Petrópolis RJ Brazil Department of Systems and Automation Universidade Federal de Santa Catarina PO Box 476 88040-900 Florianópolis SC Brazil

This paper examines the problem of robust stabilization via static output feedback for a class of uncertain linear state-delayed systems. systems with a constant time-delay and subject to norm-bo~nded parameter uncertainty in the state matrices of the ʻcurrentʼ and ʻdelayedʼ states and in the input matnx are considered. We develop a method of robust stabilization based. on linear matrix inequalities. The proposed design method incorporates information on the size, or an upper-bound, of the time-delay. The case ofsystems with polytopic uncertainty is also discussed.

关键词： Time-delay systems uncertain systems robust stabilization static output feedback linear matrix inequalities

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STEADY-STATE OPERATION ANALYSIS OF AN IDEAL HEAT INTEGRATED DISTILLATION COLUMN

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Chinese Journal of chemical engineering 1997年第4期5卷 43-54页

作者：黄克谨钱积新战德志中岩勝高松武一郎 Institute of Industrial Process Control Zhejiang University Department of Chemical Process Automation Qingdao Institute of Chemical Engineering Department of Chemical Systems National Institute of Materials and Chemical Research Institute of Industrial Technology Kansai University

A systematic approach for the steady-state operation analysis of chemical processes is *** method affords the possibility of taking operation resilience into consideration during thestage of process *** may serve the designer as an efficient means for the initial screening ofalternative design *** ideal heat integrated distillation column(HIDiC),without any reboileror condenser attached,is studied throughout this *** has been found that among the various va-riables concerned with the ideal HIDiC,feed thermal condition appears to be the only factor exertingsignificant influences on the interaction between the top and the bottom control *** is expected when the feed thermal condition approaches *** number of stages andheat transfer rate are essential to the system ability of disturbance ***,more stagesand higher heat transfer rate ought to be ***,too many stages and higher heat transfer ratemay increase the load of the

关键词： Distillation model identification steady-state design operation resilience process control

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Screening criteria for input and output selection 4

Screening criteria for input and output selection

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4th European control Conference, ECC 1997

作者： Cao, Yi Rossiter, Diane Owens, David Loughborough University Department of Chemical Engineering LoughboroughLE11 3TU United Kingdom Centre for Systems and Control Engineering University of Exeter ExeterEX4 4QF United Kingdom

ISBN: (纸本)9783952426906

The selection of inputs and outputs for control design are considered in this paper. Previous work by Cao and Biss [1] introduced the input effectiveness (IE) measure as a pre-screening tool for selecting inputs. An alternative and more efficient proof of these results is presented here using the concept of projection. This new approach for the derivation also helps when extending these ideas to output selection. The relationships between IE and the output effectiveness (OE) measures and the minimum singular value of a particular process configuration are determined. These yield four new screening criteria that can be used to indicate the scheme with the largest minimum singular value of all alternative schemes of the same dimension. Three examples are given to illustrate the usage of these criteria.

关键词： Process control

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Analysis of coal Mill Dynamic Characteristics Under Normal and Abnormal Operating Conditions

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IFAC Proceedings Volumes 1997年第17期30卷 451-457页

作者： G.Q. Fan N.W. Rees D. Parker School of Chemical Engineering and Industrial Chemistry School of Electrical Engineering Department of Systems and Control The University of New South Wales Sydney 2052 Australia Department of Power Engineering/Electrical and Control Systems Pacific Power International Sydney 2000 Australia

This paper describes the analysis results of the dynamic characteristics of coal grinding mills used in a large coal-fired power generation unit. The aim of the work is to develop a knowledge-based expert power plant operator support/control system (KBOSS) to improve power plant process monitoring and control. To achieve this it is necessary to develop a mill model that is accurate under a wide range of dynamic conditions. As the mill modeling tests were carried out in various different operating conditions, including some abnormal conditions, the test results obtained provide very important information for mill control, modeling and the system knowledge base development.

关键词： Dynamic tests power generation modeling system identification

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Measurement selection for partially controlled systems

Measurement selection for partially controlled systems

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IEEE Conference on Decision and control

作者： Yi Cao D. Rossiter D. Owens Department of Chemical Engineering Loughborough University of Technology Loughborough UK Centre for Systems and Control Engineering University of Exeter UK

ISBN: (纸本)0780341872

For a partially controlled system, the partial disturbance gain and partial reference gain are useful tools to select the uncontrolled outputs. However, traditionally these tools have to be calculated scheme-by-scheme and lead to a combinatorial problem for measurement selection. To avoid this type of problem, new plant-oriented expressions are derived for these measures. After analyzing both the fully and partially controlled systems, it is shown that the control errors of these two systems are linked by the output effectiveness measure; another useful measurement selection tool. The HDA case study presented shows that the new measures provide efficient tools for measurement selection for partially controlled systems.

关键词： control systems Gain measurement Process control Error correction chemical engineering chemical processes control engineering Transfer functions Frequency Distillation equipment

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ASUtune : A Program for Integrated System Identification and PID controller Design

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IFAC Proceedings Volumes 1997年第11期30卷 1505-1510页

作者： S. Adusumilli D.E. Rivera Department of Chemical Bio and Materials Engineering and Control Systems Engineering Laboratory Manufacturing Institute Arizona State University Tempe Arizona 85287-6006 phone (602)-965-9476

This paper describes ASUtune , a MATLAB program for combined identification and PID controller design. By integrating identification with PID controller design, the method displays functionality that is often demanded by the practicing engineering community. The major steps in this integrated methodology are, experimental design and execution, high-order ARX estimation, and control-relevant model reduction leading to models that comply with the IMC-PID tuning rules. These PID tuning rules are compatible with the Honeywell TDC 3000 distributed control system.

关键词： system identification PID control model reduction control-oriented modeling

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A Methodology for Integrated System Identification and PID controller Design

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IFAC Proceedings Volumes 1997年第9期30卷 19-24页

作者： D.E. Rivera S. Adusumilli Department of Chemical Bio and Materials Engineering and Control Systems Engineering Laboratory Manufacturing Institute Arizona State University Tempe Arizona 85287-6006 phone:(602)-965-9476

This paper describes an integrated identification and control design methodology that begins with dynamic modeling from plant data and concludes with parameter settings for high performance PID controllers. By integrating identification with PID controller design, the method displays functionality that is often demanded by the practicing engineering community. The major steps in this integrated methodology are: experimental design and execution, high-order ARX estimation, and control-relevant model reduction leading to models that comply with the IMC-PID tuning rules. A high-order ARX model estimate serves as an intermediate model for control-relevant model reduction purposes; furthermore, the low computational effort associated with ARX estimation means that simple statistical tools (such as cross validation) can be used to efficiently determine a suitable structure for the ARX model without substantial user intervention. The methodology is demonstrated on a delayed time plant subjected to significant drift (i.e., a disturbance represented by an autoregressive integrated noise model).

关键词： system identification PID control model reduction control-oriented modeling

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Multivariable Impulse Response Estimation via Correlation Analysis and Its Application to Automated System Identification

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IFAC Proceedings Volumes 1997年第11期30卷 1399-1404页

作者： Wei-Ming Ling Daniel E. Rivera Department of Chemical Bio and Materials Engineering and Control Systems Engineering Laboratory Manufacturing Institute Arizona State University Tempe AZ 85287-6006 phone:(602)-965-9476

This paper presents a correlation analysis approach for estimating impulse response coefficients of multivariable systems where inputs and/or measured disturbances are allowed to be correlated with each other. The resulting estimator forms a simple linear equation set for which a simple closed form solution can be obtained, and due to the nonparametric nature of the estimator, the problem of selecting proper model structures encountered in parametric methods is avoided. These characteristics make the estimator very appropriate as a preliminary estimation step to more detailed parametric methods. Two other applications of the correlation analysis estimator include non-zero transfer function determination in multivariable systems and online identification experiment monitoring. The effectiveness of the proposed methods is illustrated on industrial data.

关键词： nonparametric identification correlation analysis identification test monitoring

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A control-Relevant Multivariable System Identification Methodology Based on Orthogonal Multifrequency Input Perturbations

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IFAC Proceedings Volumes 1997年第11期30卷 573-578页

作者： Daniel E. Rivera Shan Zong Wei-ming Ling Department of Chemical Bio and Materials Engineering and Control Systems Engineering Laboratory Manufacturing Institute Arizona State University Tempe Arizona 85287-6006 phone:(602)-965-9476

In this paper, we propose a MIMO system identification method utilizing an orthogonal multifrequency input perturbation which we call the “zippered᾿ Schroeder-phased signal. Guidelines for the design of a plant-friendly “zippered᾿ Schroeder-phased input are presented based on a priori knowledge of open-loop time constants and closed-loop system response requirements of the system to be identified. A frequency response estimate is then obtained by applying discrete Fourier transforms (DFTs) to the data. control-relevant parameter estimation via a frequency-weighted curvefitting problem formulation tailored for orthogonal signal perturbations is presented. Application of the methodology is shown for the case of Model Predictive control of a high purity binary distillation column, a nonlinear, highly interactive system.

关键词： input signals system identification control-oriented modeling frequency response methods high-purity distillation

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