Variable structure identifier for servo systems under uncertain loading

Yu Sheng Lu, Jian Shiang Chen

Research output: Contribution to journalArticle


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

ASJC Scopus subject areas

  • Control and Systems Engineering

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