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Adaptive fuzzy controller design of nonlinear systems with unknown gain sign

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Abstract

For a class of uncertain nonlinear non-affine systems, an adaptive fuzzy controller is proposed in this paper. Compared with the existing results, the proposed controller does not require a priori knowledge about the sign of the control gain coefficient. It can be shown that all the signals in the closed-loop system are bounded and the tracking error converges to a bounded compact sets by choosing design parameters appropriately. A simulation example is given to guarantee the effectiveness of the proposed controller.

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Authors and Affiliations

  1. Department of Mathematics and Physics, Liaoning University of Technology, Jinzhou, Liaoning, 121001, China

    Yan-Jun Liu

  2. School of Electronic and Information Engineering, Liaoning University of Science and Technology, Anshan, Liaoning, 114004, China

    Zhi-Feng Wang

Authors
  1. Yan-Jun Liu
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  2. Zhi-Feng Wang
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Corresponding author

Correspondence to Yan-Jun Liu.

Additional information

This work was supported in part by National Natural Science Foundation of China (60874056); The Science Foundation of Educational Department of Liaoning Province (2008312).

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Liu, YJ., Wang, ZF. Adaptive fuzzy controller design of nonlinear systems with unknown gain sign. Nonlinear Dyn 58, 687–695 (2009). https://doi.org/10.1007/s11071-009-9510-3

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  • DOI: https://doi.org/10.1007/s11071-009-9510-3

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