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Robust sliding mode control for nonlinear uncertain time-delay systems based on disturbance observer

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4 Author(s)
Han Yunhao ; Shanghai Univ. of Electr. Power, Shanghai, China ; Mi Yang ; Li Juntao ; Yuanwei Jing

The disturbance-observer-based sliding mode controller is designed for a class of nonlinear uncertain time-delay systems. A disturbance observer, unbiased in terms of the weighted mean, is designed to estimate the lumped disturbances with time-varying delay by the current system states, and the corresponding estimation error is analyzed. By incorporating Hinfin control technique into sliding mode control approach, integral sliding mode controllers are designed to guarantee the Hinfin performance of sliding mode dynamics and satisfy the reaching condition. The proposed scheme does not require uncertainties to satisfy matching condition and linear boundary condition, and chattering is efficiently restrained as well. A simulation example illustrates the obtained results.

Published in:

Control and Decision Conference, 2009. CCDC '09. Chinese

Date of Conference:

17-19 June 2009