Research Article

Non-linear stochastic controllers for semiactive and regenerative systems with guaranteed quadratic performance bounds—Part 2: Output feedback control

  1. J. T. Scruggs1,*,
  2. A. A. Taflanidis2,
  3. W. D. Iwan2

Article first published online: 19 FEB 2007

DOI: 10.1002/stc.195

Issue

Structural Control and Health Monitoring

Structural Control and Health Monitoring

Volume 14, Issue 8, pages 1121–1137, December 2007

Additional Information

How to Cite

Scruggs, J. T., Taflanidis, A. A. and Iwan, W. D. (2007), Non-linear stochastic controllers for semiactive and regenerative systems with guaranteed quadratic performance bounds—Part 2: Output feedback control. Struct. Control Health Monit., 14: 1121–1137. doi: 10.1002/stc.195

Author Information

  1. 1

    Department of Civil & Environmental Engineering, Duke University, Durham, NC, U.S.A.

  2. 2

    Division of Engineering & Applied Science, California Institute of Technology, Pasadena, CA, U.S.A.

*Department of Civil & Environmental Engineering, Pratt School of Engineering, Duke University, Box 90287, Hudson Hall, Durham, NC 27708-0287, U.S.A.

Publication History

  1. Issue published online: 30 OCT 2007
  2. Article first published online: 19 FEB 2007
  3. Manuscript Accepted: 29 NOV 2006
  4. Manuscript Revised: 25 OCT 2006
  5. Manuscript Received: 30 APR 2006

Funded by

  • NSF SGER. Grant Number: CMS-0505887
  • G. W. Housner Postdoctoral Fellowship

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Keywords:

  • semiactive control;
  • regenerative control;
  • structural damping;
  • non-linear dynamics;
  • mechatronics

Abstract

This paper is a continuation of the accompanying paper, which presented an approach to the design of non-linear controllers for semiactive and regenerative systems, for which the closed-loop system exhibits an analytically guaranteed bound on mean-square performance, as measured by the quadratic-Gaussian (QG) performance measure. The development assumed that the full state of the dynamic system was available for feedback. This paper extends the performance-guaranteed controller (PGC) design approach to the more realistic case for which sensory feedback constitutes only part of the entire system state. Cases are considered with and without sensor noise. It is shown that in both cases PGCs may be designed so as to outperform optimal linear time-invariant viscous damping, even in the presence of significant sensor noise, although typically by a smaller margin than in the full-state feedback case. The proposed controller design is illustrated on the same structural control example considered in the accompanying paper. Copyright © 2007 John Wiley & Sons, Ltd.

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