Sliding-Mode based Extended Disturbance Observer for Nonlinear Systems

摘要：

　　Model mismatch and external disturbances is wildly existed in control practice of nonlinear systems,which badly influenced the control effect.To handle such a situation,we proposed a sliding-mode based extended disturbance observer(SMEDO)in this paper.The brief idea is to combine a traditional nonlinear extended disturbance observer with the principle of sliding-mode.By well-designed sliding mode surface,the robustness of modified disturbance observer can be enhanced.The stability proof and the principle of the parameter design of modified observer are also given.Finally the performance of traditional NDOB、EDOB and proposed SMEDOB is compared.Simulations reveal that the proposed method has higher estimation precision,speed,and stronger robustness.

关键词： nonlinear system model mismatch sliding mode theory disturbance observer

作者: TAN Lining JIN Guodong LIU Chang

作者单位: Rocket Force Engineering University,Xi”an 710025

会议类型: 国内会议

会议名称: 2017中国智能物联系统会议

会议地点: 厦门

会议语种:英文

页码: 271-275

在线出版日期: 2017-11-17（万方平台首次上网日期，不代表论文的发表时间）