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Preview control for a class of linear stochastic systems with multiplicative noise

Author

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  • Jiang Wu
  • Fucheng Liao
  • Zhengguang Xu

Abstract

In this paper, the preview control problem for a class of linear continuous time stochastic systems with multiplicative noise is studied based on the augmented error system method. First, a deterministic assistant system is introduced, and the original system is translated to the assistant system. Then, the integrator is employed to ensure the output of the closed-loop system tracking the reference signal accurately. Second, the augmented error system, which includes integrator vector, control vector and reference signal, is constructed based on the system after translation. As a result, the tracking problem is transformed into the optimal control problem of the augmented error system, and the optimal control input is obtained by the dynamic programming method. This control input is regarded as the preview controller of the original system. For a linear stochastic system with multiplicative noise, the difficulty being unable to construct an augmented error system by the derivation method is solved in this paper. And, the existence and uniqueness solution of the Riccati equation corresponding to the stochastic augmented error system is discussed. The numerical simulations show that the preview controller designed in this paper is very effective.

Suggested Citation

  • Jiang Wu & Fucheng Liao & Zhengguang Xu, 2019. "Preview control for a class of linear stochastic systems with multiplicative noise," International Journal of Systems Science, Taylor & Francis Journals, vol. 50(14), pages 2592-2603, October.
    • Handle: RePEc:taf:tsysxx:v:50:y:2019:i:14:p:2592-2603
    DOI: 10.1080/00207721.2019.1672000
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