Title
Design of a Disturbance Observer for a Two-Link Manipulator With Flexible Joints
Abstract
This brief proposes a method for designing a disturbance observer (DOB) to decouple joint interactions in robot dynamics with nonlinearity. The traditional DOB based on filter design theory has limited performance since the cut-off frequency of its Q-filter is the only tunable parameter to deal with disturbance suppression and model uncertainty. In this brief, a robust optimal design method is developed for the DOB, which can achieve optimal performance of suppressing disturbance by systematically shaping its Q-filter. Simulation results of application to a two-link manipulator with flexible joints show the improvements in disturbance suppression, which illustrates the validity of the proposed method.
Year
DOI
Venue
2014
10.1109/TCST.2013.2248733
IEEE Trans. Contr. Sys. Techn.
Keywords
Field
DocType
control nonlinearities,flexible manipulators,manipulator dynamics,observers,optimal control,robust control,uncertain systems
Nonlinear system,Optimal control,Control theory,Manipulator,Optimal design,Control engineering,Observer (quantum physics),Robust control,Robot,Mathematics,Filter design
Journal
Volume
Issue
ISSN
22
2
1063-6536
Citations 
PageRank 
References 
13
0.84
6
Authors
2
Name
Order
Citations
PageRank
Jong Nam Yun1382.04
Jianbo Su223138.20