Title
Dual Observers for the Disturbance Rejection of a Motion Control System
Abstract
The conventional motion control system simply consists of a PID position controller and a disturbance observer. The estimated speed from the observer has been used to control the speed as a feedback and the estimated disturbance force, which is a byproduct of the observer, has been used to reject the disturbance. However, in this case the disturbance rejection performance should be traded off with speed estimation performance. This paper explains this trade-off using Bode analysis and presents a dual observer system for the motion control application. The proposed method uses two observers, where one is dedicated to the speed estimation and the other to disturbance compensation. The disturbance rejection performance is enhanced by the custom tuned disturbance observer in the proposed method. The feasibility of the proposed method has been verified by the experimental results using a high precision linear motion control system as well as by the analysis based on Bode plot.
Year
DOI
Venue
2007
10.1109/07IAS.2007.82
2007 IEEE Industry Applications Annual Meeting
Keywords
DocType
ISSN
dual observers,disturbance rejection,motion control system,PID position controller,disturbance observer,speed estimation,Bode analysis
Conference
0197-2618
ISBN
Citations 
PageRank 
978-1-4244-1259-4
0
0.34
References 
Authors
1
4
Name
Order
Citations
PageRank
youngdoo yoon100.34
eunsoo jung200.34
Anno Yoo300.68
Seung-Ki Sul411024.96