Title
Robust Control of a Serial Variable Stiffness Actuator Based on Nonlinear Disturbance Observer (NDOB)
Abstract
This paper focuses on the difficulty of designing control strategy for a Serial Variable Stiffness Actuator (SVSA) because of the disturbances in such as spring deflection, model uncertainty and load disturbance. A nonlinear disturbance observer based composite controller (NDOBC) is developed to reject the load disturbance and improve the performance in disturbance rejection. This NDOBC is proposed to control both stiffness and position of the SVSA. Compared to other nonlinear controller for SVSA, the proposed control method can guarantee the robust stability and performance against load disturbance. The effectiveness of the proposed controller is experimentally verified on the SVSA.
Year
DOI
Venue
2018
10.1109/ICARM.2018.8610767
2018 3rd International Conference on Advanced Robotics and Mechatronics (ICARM)
Keywords
Field
DocType
robust control,serial variable stiffness actuator,nonlinear disturbance observer,control strategy,SVSA,load disturbance,composite controller,NDOBC,disturbance rejection,nonlinear controller,control method
Deflection (engineering),Control theory,Nonlinear system,Control theory,Computer science,Stiffness,Robust control,Observer (quantum physics),Actuator
Conference
ISBN
Citations 
PageRank 
978-1-5386-7067-5
0
0.34
References 
Authors
16
6
Name
Order
Citations
PageRank
Zhao Guo15511.51
Jiantao Sun221.04
Jie Ling3116.84
Tairen Sun41359.17
Yongping Pan5504.64
Xiaohui Xiao62313.56