Variable structure identifier for servo systems under uncertain loading

Yu Sheng Lu*, Jian Shiang Chen

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


A variable structure identification scheme is proposed to achieve fast and stable on-line parameter estimation of a servo system under uncertain loading. Theoretically, once the system starts up, the identifier attains to its 'steady' estimation of the uncertain loading after a short period required for the sliding variable to perform one oscillation about zero. The proposed scheme is combined with the boundary-layer method to control a magnetic levitation system with uncertain levitated mass. The preciseness of this identification scheme is verified through experiments.

Original languageEnglish
Pages (from-to)2035-2039
Number of pages5
JournalProceedings of the American Control Conference
Publication statusPublished - 1994
Externally publishedYes
EventProceedings of the 1994 American Control Conference. Part 1 (of 3) - Baltimore, MD, USA
Duration: 1994 Jun 291994 Jul 1

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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