摘要
In this paper,a class of second-order sliding mode controller is proposed for nonlinear uncertain systems.The finite-time stability of the nonlinear uncertain systems is achieved when the sliding mode is matched or unmatched.Compared with the previous second-order sliding mode controller,the parameter conditions of the controller are simple and can be given explicitly,and easy to obtain.Finally,the simulation results of dc motor system and dc–dc buck converter verify the effectiveness of the proposed controller in the case of matching and mismatching.
基金
the National Natural Science Foundation of China
under Grant[61374024]
the Hunan Provincial Natural Science Foundation of China
under Grant[2020JJ4755 and 2021JJ60045]
the scientific research project of Hunan Provincial Department of Education,under Grant[20C0712].
