Experimental and analytical studies of the sinusoidal dither signal in a DC motor system

Pi Cheng Tung, Seng Chi Chen

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

In this article we are concerned with the implementation of a dither signal for a closed-loop DC motor system. Experimental studies show that the system contains two nonlinearities that are saturated with dead zone and backlash. Parameter estimation techniques are used to identify the unknown system parameters with special care due to the existence of system nonlinearities. An analytical method is then presented to deal with the closedloop DC motor system with two nonlinearities in the loop. Self-excited oscillations are found to exist in the system. A good correlation between the theoretical and experimental results indicates the success of the system identification and modelling process. Also the ability of dither to quench the limit cycle is demonstrated from these results.

Original languageEnglish
Pages (from-to)53-69
Number of pages17
JournalDynamics and Control
Volume3
Issue number1
DOIs
StatePublished - Jan 1993

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