Transactions of the Institute of Systems, Control and Information Engineers
Online ISSN : 2185-811X
Print ISSN : 1342-5668
ISSN-L : 1342-5668
Design of a Frequency-Shaping ILQ Controller to Suppress Vibration in a Magnetic Levitation System
Masaya SAKAIYuuki KUROEKen'ichi NAKASHIMATakao FUJII
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1998 Volume 11 Issue 5 Pages 267-276

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Abstract

In the preceding paper, experimental results on the control of a magnetic levitation system using the ILQ and the H. control theories were reported. In the ILQ case, a spillover was caused by unmodeled dynamics, where the dimention of the controller was lower than that in the H case. In this paper, we shape the closed loop frequency response of the ILQ control system to suppress the spillover by introducing additional design freedom of the observer. As a result almost the same closed loop performance as the H controller can be achieved by this lower dimensional controller.

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