Transactions of the Institute of Systems, Control and Information Engineers
Online ISSN : 2185-811X
Print ISSN : 1342-5668
ISSN-L : 1342-5668
Robust Control of Hydraulic Servo Systems Considering Large Plant Perturbation and Input Saturation
Toshiharu SUGIEKan CHIN
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1995 Volume 8 Issue 12 Pages 701-707


This paper is concerned with robust controller design for hydraulic positioning systems. Generally, hydraulic positioning systems have problems such as large perturbation and input saturation. First, taking account of the large plant perturbation, we give a design method of feedback controllers via an LMI based H loop shaping method, which reflects the current plant dynamics. Second, in order to cope with input saturation, we propose to adopt feedforward controllers which contain velocity limit function. Furthermore, the validity of the proposed design method is shown by experiments.

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