Disturbance rejection using SMC-based-equivalent-input-disturbance approach
作者：
Highlights：
• This paper uses an SMC controller to suppress the estimation error neglected by the conventional EID approach. The application of the SMC improves the disturbance-rejection performance of the EID approach.
• A variable switching gain is designed to reduce the chattering. The switching gain is dependent on the estimation error and is very small. Thus, the chattering is smaller than the conventional SMC method.
• A comparison shows that the disturbance-rejection performance of our method is better than either the conventional EID approach or the conventional SMC method while the chattering is almost free.
摘要
•This paper uses an SMC controller to suppress the estimation error neglected by the conventional EID approach. The application of the SMC improves the disturbance-rejection performance of the EID approach.•A variable switching gain is designed to reduce the chattering. The switching gain is dependent on the estimation error and is very small. Thus, the chattering is smaller than the conventional SMC method.•A comparison shows that the disturbance-rejection performance of our method is better than either the conventional EID approach or the conventional SMC method while the chattering is almost free.
论文关键词：Chattering free,Disturbance rejection,Equivalent input disturbance,Nonlinear system,Sliding-mode control
论文评审过程：Received 2 November 2020, Revised 7 September 2021, Accepted 26 November 2021, Available online 15 December 2021, Version of Record 15 December 2021.
论文官网地址：https://doi.org/10.1016/j.amc.2021.126839
