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Robust Output Feedback Stabilization of a Field-Sensed Magnetic Suspension System

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  • Jen-Hsing Li
  • Juing-Shian Chiou

Abstract

The magnetic suspension system (MSS) is very important in many engineering applications. This paper proposes the dynamic output feedback control of a field-sensed MSS (FSMSS). Subsequently, the mathematical model of the MSS is described by discrete-time systems. Ideally, the coefficients of a nominal polynomial can precisely determine the Schur stability. But in reality, the coefficients may contain uncertainties due to reasons such as computational errors. Therefore, there is a need to address the problem of robust stability for discrete-time systems. In this paper, the size of allowable perturbation in polynomial coefficient space was estimated for the output feedback control of the MSS. The -norm and a lower bound for the size of the Schur stability hypercube are provided in this paper.

Suggested Citation

  • Jen-Hsing Li & Juing-Shian Chiou, 2013. "Robust Output Feedback Stabilization of a Field-Sensed Magnetic Suspension System," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-7, May.
    • Handle: RePEc:hin:jnlmpe:192431
    DOI: 10.1155/2013/192431
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