Transactions of the Institute of Systems, Control and Information Engineers
Online ISSN : 2185-811X
Print ISSN : 1342-5668
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Design of a Multiple-input Multiple-output Dualrate System in State-space Representation
Shuhei KimuraTakao SatoNozomu ArakiYasuo Konishi
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2014 Volume 27 Issue 3 Pages 80-86

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Abstract

This paper deals with a multiple-input multiple-output dualrate system, where the sampling intervals of the plant outputs are an integer multiple of the hold intervals of the control inputs. In such a multirate system, ripples may occur in intresample behavior even if sampled outputs converge to reference inputs. In order to resolve this problem, a control law is enhanced using free parameters. As a result, ripples are eliminated in the steady state without changing the sampled outputs using an existing designed control law. Furthermore, a design method in state-space representation is proposed. In this paper, an observer is used because all state variables cannot be observed. Finally, numerical examples demonstrate the effectiveness of the proposed method.

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© 2014 The Institute of Systems, Control and Information Engineers
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