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Data-Driven Robust Control of Unknown MIMO Nonlinear System Subject to Input Saturations and Disturbances

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  • Li Wang
  • Huajun Gong
  • Chunsheng Liu

Abstract

This paper presented a new data-driven robust control scheme for unknown nonlinear systems in the presence of input saturation and external disturbances. According to the input and output data of the nonlinear system, a recurrent neural network (RNN) data-driven model is established to reconstruct the dynamics of the nonlinear system. An adaptive output-feedback controller is developed to approximate the unknown disturbances and a novel input saturation compensation method is used to attenuate the effect of the input saturation. Under the proposed adaptive control scheme, the uniformly ultimately bounded convergence of all the signals of the closed-loop nonlinear system is guaranteed via Lyapunov analysis. The simulation results are given to show the effectiveness of the proposed data-driven robust controller.

Suggested Citation

  • Li Wang & Huajun Gong & Chunsheng Liu, 2017. "Data-Driven Robust Control of Unknown MIMO Nonlinear System Subject to Input Saturations and Disturbances," Mathematical Problems in Engineering, Hindawi, vol. 2017, pages 1-11, September.
    • Handle: RePEc:hin:jnlmpe:5186025
    DOI: 10.1155/2017/5186025
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