Transactions of the Institute of Systems, Control and Information Engineers
Online ISSN : 2185-811X
Print ISSN : 1342-5668
ISSN-L : 1342-5668
Robustness Analysis of an Adaptive D. C. Servo System with a Velocity Reference Model
Kazuhisa MITOBENorihiko ADACHI
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1990 Volume 3 Issue 12 Pages 422-430

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Abstract

Disturbance instability in an adaptive D. C. servo system is investigated. The system considered in this paper is a simple positioning system with a D. C. servo motor. Although the conventional adaptive algorithm is adopted, complete stability analysis of the system under the existence of disturbances is difficult because of the nonlinearlity in the adaptive system. In this paper the drift of the adjustable parameters is discussed by singular perturbation method.
Based on the analysis, some ideas to prevent the adjustable parameters from drifting are presented.

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