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Composite Antidisturbance Control for a Class of Nonlinear Stochastic Systems via Disturbance Observer

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  • Yunlong Liu
  • Yumin Zhang
  • Xiuming Yao

Abstract

The stabilization problem is investigated in this paper for a class of nonlinear systems with disturbances. The disturbances are supposed to be classified into two types. One type in the input channel is generated by an exogenous system, which can represent the constant or harmonic signals with unknown phase and magnitude. The other type is stochastic disturbance. Two kinds of nonlinear dynamics in the plants are considered, respectively, which correspond to the known and unknown functions. By integrating the disturbance observers with conventional control method, the first type of disturbances can be estimated and rejected. Simultaneously, the desired dynamic performances can be guaranteed. An example is given to show the effectiveness of the proposed scheme.

Suggested Citation

  • Yunlong Liu & Yumin Zhang & Xiuming Yao, 2013. "Composite Antidisturbance Control for a Class of Nonlinear Stochastic Systems via Disturbance Observer," Mathematical Problems in Engineering, Hindawi, vol. 2013, pages 1-7, December.
    • Handle: RePEc:hin:jnlmpe:281340
    DOI: 10.1155/2013/281340
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