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Space Integrated controls Experiment (SPICE)

IFAC Proceedings Volumes 1994年第13期27卷 213-218页

作者： R.M. Blankinship J.A. Breakwell R.R. Ninneman Lockheed Technical Operations Company Albuquerque NM USA Lockheed Missiles and Space Company Sunnyvale CA USA United States Air Force Phillips Laboratory Kirtland AFB NM USA

The Space Integrated controls Experiment (SPICE) program has developed one of the premier testbeds in the country for controls-structures interaction research. Four years of hardware and software development and integration efforts were completed in May 1993. Completion of these efforts brought the testbed on-line to begin the first phase of testing, demonstration of active structural control on a representative precision optical structure. In June 1993, the program performed a successful, full scale demonstration of active, global structural control for the first time. The final test series was completed in August 1993 achieving 75 to 1 attenuation of the RMS LOS jitter in the 5-128 Hz frequency band. This paper describes the testbed, control system final design process, software and hardware implementation, test execution and results.

关键词： control system design Digital control Kalman filters multivariable control system Structural controlability Vibration control

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Analysis and control of Articulated Robot Arms with Redundancy

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IFAC Proceedings Volumes 1981年第2期14卷 1927-1932页

作者： H. Hanafusa T. Yoshikawa Y. Nakamura Automation Research Laboratory Kyoto University Gokasho Uji Kyoto 611 Japan

Industrial robot applications have seen remarkable growth in numbers and in diversity of uses. In configuration, it is also slowly changing from cartesian and cylindrical coordinate types to articulated one mainly due to the fact that articulated robot arms are more flexible and versatile. From the view point of control, however, arms of this type possess certain inherent problems. One concerns the nonlinear relation between the position and orientation of the robot hand and the rotational angles of the joints of the arm. Another problem concerns the existence of singular points in the state space of joints, which reduces the robot's degree of freedom. Although it has sometimes been claimed that redundant arms can effectively overcome the problem of singularity and increase flexibility and versatility, these have yet to be studied in full. In this paper, the manipulatability and redundancy of multi-articulated robot arms are analyzed and utilization of redundancy is discussed. Experimental results are also presented concerning the utilization of redundancy for trajectory control with provisions for an obstacle.

关键词： Robots manipulators redundancy obstacle avoidance multivariable control system computer control d.c. motors

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Model Predictive control of a Kaibel Distillation Column

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IFAC Proceedings Volumes 2010年第5期43卷 553-558页

作者： Martin Kvernland Ivar Halvorsen Sigurd Skogestad Reinertsen Engineering N-7492 Trondheim Norway Department of Engineering Cybernetics Norwegian University of Science and Technology N-7034 Trondheim Norway SINTEF ICT Applied Cybernetics N-7465 Trondheim Norway Department of Chemical Engineering Norwegian University of Science and Technology N-7491 Trondheim Norway

This is a simulation study on controlling a Kaibel distillation column with model predictive control (MPC). A Kaibel distillation column has several advantages compared with conventional binary column setups. The Kaibel column separates a feed stream into four product streams using only a single column shell. The distillation process is a multivariable process which leads to a multivariable control problem. The objective for optimal operation of the column is chosen to be minimization of the total impurity flow. An off-line optimization on a mathematical model leads to temperature setpoints to be used by a controller. An MPC generally obtain less total impurity flow compared to conventional decentralized control when the distillation column is exposed to disturbances. It also counteract process interactions better than decentralized control.

关键词： Kaibel distillation column multivariable control system model based control

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multivariable Optimal control of the Cold Mill Flatness

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IFAC Proceedings Volumes 1999年第2期32卷 7516-7520页

作者： Hua Jian-Xin Jin Yi-hui Wen-Bin Wu Automation Department Tsinghua Univ. Beijing 100084 P.R. China Equipment Department of Bao-Steel Shanghai 201900 P.R. China

In this paper, the two kinds of techniques for flatness control are analyzed and investigated. The first one is based on flatness defect identification, and the other is based on multivariable optimal search technique. After the mathematical analysis and the comparison with the practical process data, both the advantages and disadvantages of the two approaches are evaluated.

关键词： Least Squares Identification multivariable control system Optimal Search Techniques Flatness Defect Curve-Fitting

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A multivariable Decoupling Pole-Zero Placement Self-Tuning controller

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IFAC Proceedings Volumes 1985年第9期18卷 99-103页

作者： Lang Shi Jun Gu Xing Yuan Chai Tian You Department of Automatic Control Northeast University of Technology Shenyang Liaoning China

This paper describes a new multivariable self-tuning controller which is able to handle the system with different time delays between each of the input-output pairs, and deal with the system with unknown or varying time delays. The proposed controller not only moves the closedloop-system poles to the prespecified locations but also decouples the multivariable system. It. can track time varying reference signals and eliminate tracking errors. In addition an implicit algorithm is proposed under certain conditions. The controller is demonstrated using a concentration-flow process, a paper machine head box and an unstable and nonminimum phase system having different time delays.

关键词： Self-tuning control multivariable control system pole-zero placement decoupling identification

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An Improved Algorithm for Generalising Pseudodiagonalisation

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IFAC Proceedings Volumes 1985年第9期18卷 223-228页

作者： Y.L. Bao G.Z. Pang S.F. Li Department of System & Management Science University of Science and Technology of China Hefei Anhui China

The multivariable frequency domain design method is playing an increasingly important role in computer-aided control system design and it depends on achieving a diagonally-dominant system to complete the design with success. The pseudodomination proposed in this paper enables us to design dynamic compensator to improve the dominance of the compensated plant over an extended range of frequencies. The procedure arises from Hawkins's generalising pseudodiagonalisation in a number of directions; in particular, the calculation is reduced and some important messages that provide a real facilitation to the design can be easily gotten at in computational process. Three examples designed interactively by computer are included to illustrate the effectiveness of the improved algorithm.

关键词： multivariable control system linear systems dynamic compensator computer-aided design pseudodiagonalisation

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Integrated multivariable Model Prediction system Performance Assessment, Monitoring and Diagnosis Method

Integrated Multivariable Model Prediction System Performance...

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31st Chinese control Conference

作者： Zhang Tong Sun Yan-Nan Li Chang-Xian Wang Qing-Lin Dalian Jiaotong Univ Sch Elect & Informat Engn Dalian 116028 Peoples R China Beijing Inst Technol Sch Informat Sci & Technol Dept Automat Beijing 100081 Peoples R China

ISBN: (纸本)9789881563811

Performance analysis was incorporated with model predictive control(MPC) performance assessment, monitoring and diagnosis method, a suit of integrated diagnosis technique was proposed for multivariable control system so it can make up the shortages of two methods and realize clear and detailed diagnosis ultimately. Research on theory and simulation show new method not only promote diagnose efficiency and precise level but predigest the whole diagnose process. It is very practical.

关键词： multivariable control system Performance Assessment Monitoring diagnosis

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Problems of Automatic control of Food Raw Materials Conditioning During Storage

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IFAC Proceedings Volumes 1983年第10期16卷 285-289页

作者： G.N. Dobrinski I.G. Shopov N.P. Ginov Department of Automation Higher Institute for Food Industry bul. Lenin 26 4000 Plovdiv Bulgaria

The paper is concerned with some problems of automatic control systems of food raw materials storages equipped with .. active ventilation devices. A distributed parameter model of the plant is applied to describe the dynamics of heat transfer in the bulk and to determine the number and configuration of sensors and local control loops. Multichannel control systems designed for both flat grain and open sugar beet storages are described. Results of the control systems operation are presented.

关键词： Food processing industry grain storage sugar beet storage distributed parameter model multivariable control system relay control adaptive control

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An Improved Algorithm for Pseudodiagonalisation and its CAD Program

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IFAC Proceedings Volumes 1983年第19期16卷 481-485页

作者： Y.L. Bao Department of Radio-Eletronics University of Science and Technology of China Hefei Anhui China

In this paper a method for designing dynamic compensators which reduce open loop interaction in a multivariable system is presented. The improved algorithm for pseudodiagonalisation reduces the 2m X 2m eigenvalue/vector problem to 2 X 2 eigenvalue/vector problem. The CAD program has been designed. An example designed interactively by computer is included to illustrate the effectiveness of the procedure.

关键词： multivariable control system linear systems dynamic compensator transfer functions pseudodiagonalisation

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Performance Assessment of multivariable Model Predictive control Subjected to Non-Gaussian Disturbances

Performance Assessment of Multivariable Model Predictive Con...

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第32届中国过程控制会议(CPCC2021)

作者： HAN Xin WANG Yu-hong College of Control Science and Engineering China University of Petroleum

Model predictive control(MPC) is suitable for dealing with multivariable optimization control problems with complex *** order to maintain control loops working with good performance,it is necessary to assess control performance of predictive *** conventional performance assessment index based on minimum variance(MV) is only suitable for system affected by Gaussian *** this paper,a performance assessment index based on rational entropy(RE) is proposed to assess the performance of multivariable model predictive control subjected to non-Gaussian *** MPC controller performance assessment has been carried out for the Wood-Berry distillation column with two inputs and two outputs under non-Gaussian *** comparing with the traditional multivariate performance assessment index based on MV,the proposed performance assessment index based on minimum rational entropy is more effective.

关键词： control loop Performance Assessment Non-Gaussian Disturbance Rational Entropy Model Predictive control multivariable control system

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