摘要:

Singular perturbation methods are used to demonstrate that the transfer function matrices of multivariable linear systems containing small ‘parasitic’ elements have a distinctive structure which can be exploited in the design of controllers fur systems of this class by the application of frequency-domain methods.

ISSN:0020-7179    

DOI:10.1080/00207177508922019

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

This paper considers the problem of designing dynamic compensators for linear multivariable systems to obtain arbitrary pole placement while minimizing a quadratic performance index in the system state and control variables. The design employs feedback from only the available system outputs. A static optimization problem in the compensator parameters is formulated, the solution of which, using the algorithm derived in the paper, yields the required design. Unlike in the work of Brasch and Pearson (1970) and other authors, no unity-rank constraints are imposed on any of the compensator matrices. Consequently, pole placement is obtained with compensators that are often of lower order than required by them.

ISSN:0020-7179    

DOI:10.1080/00207177508922020

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

The reduction of the dimensions of the input/output vectors in a multivariable stochastic system is considered. The approach described here is a time-domain approach. The technique is illustrated with analysis on chemical engineering data.

ISSN:0020-7179    

DOI:10.1080/00207177508922021

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

Mismatch problems in a Smith predictor control scheme have boon investigated using sensitivity points concepts. It is shown that this method is possible in this case without reducing the controller! system to a canonical form.

ISSN:0020-7179    

DOI:10.1080/00207177508922022

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

The problem of least-squares estimation of closed-loop systems is examined. The particular configuration considered is the single input-single output discrete linear system controlled by a linear, stationary feedback regulator. Results are obtained which determine the conditions for uniqueness and consistency of the least-squares estimates of the forward-path transfer function. In particular, it is shown that if two orthogonal unobservable noise sources are present, one in each path, the system is uniquely identifiable. When the feedback path is noise-free the uniqueness of the estimates is dependent upon the order of the regulator regression polynomials. The consistency of the estimates in the case of a white forward-path disturbance is assured provided that there is at least one delay term in the loop.

ISSN:0020-7179    

DOI:10.1080/00207177508922023

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

ISSN:0020-7179    

DOI:10.1080/00207177508922024

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

ISSN:0020-7179    

DOI:10.1080/00207177508922025

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor