An Extended Multi-Surface Sliding Control for Matched/Mismatched Uncertain Nonlinear Systems Through a Lumped Disturbance Estimator

IEEE Access

Ha Le Nhu Ngoc Thanh¹  Sung Kyung Hong² 

[1] Faculty of Intelligent Mechatronics Engineering, Sejong University, Seoul, South Korea;Faculty of Mechanical and Aerospace Engineering, Sejong University, Seoul, South Korea;

关键词: Multi-sliding surface;    sliding mode control;    lumped disturbance;    disturbance estimator;    matched/mismatched uncertain systems;   

DOI  :  10.1109/ACCESS.2020.2994339

来源: DOAJ

【 摘 要 】

In this paper, we introduce a novel extended sliding mode control algorithm for a class of uncertain nonlinear system through a lumped disturbance estimator. The fundamental concept of this approach is to use multiple proportional-integral sliding surfaces to estimate the lumped disturbances generated by arbitrary matched/mismatched uncertainties. Following, an effectively extended sliding mode controller integrated with the estimated values is designed through the proposed series of sliding-surfaces to deal with the control problem of an uncertain nonlinear engineering model. The stability of both closed-loop control system and lumped disturbance estimator is achieved by Lyapunov theorem. The effectiveness of the proposed approach is demonstrated through simulation results of an illustrative example.

【 授权许可】

Unknown