An observer design for time-delay control and its application to DC servo motor

This paper addresses the estimation problem of states and their derivatives for the Time Delay Control (TDC), a robust control technique for nonlinear systems. To this end, an observer design method is presented. Then, in simulations, the controller/observer has been applied to a nonlinear plant, wi...

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Bibliographic Details
Published inControl engineering practice Vol. 2; no. 2; pp. 263 - 270
Main Authors Chang, Pyung H., Lee, Jeong W.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.04.1994
Subjects
DC motor
Observer
robust control
sensor noise
Time Delay Control
robust control
DC motor
Time Delay Control
sensor noise
Observer
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ISSN0967-0661
1873-6939
DOI10.1016/0967-0661(94)90206-2

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Summary:This paper addresses the estimation problem of states and their derivatives for the Time Delay Control (TDC), a robust control technique for nonlinear systems. To this end, an observer design method is presented. Then, in simulations, the controller/observer has been applied to a nonlinear plant, with satisfactory results. Finally, experiments were undertaken on a DC servo motor subject to substantial inertia variations and external disturbances. The results showed that the controller/observer performs quite robustly under those variations and disturbances, and is much less sensitive to sensor noise than the controller using numerical differentiations.
ISSN:0967-0661
1873-6939
DOI:10.1016/0967-0661(94)90206-2