Paper Info
Title
Adaptive Robust Precision Motion Control of Linear Motors With Integrated Compensation of Nonlinearities and Bearing Flexible Modes
Abstract
To realize the high performance potential of linear motor drive systems, various nonlinearities inherited to the system and their compensations have been extensively studied during the past decade. However, existing research tends to focus on one or several types of nonlinearities at a time and thus do not offer a complete overall solution. This paper studies precision motion control of linear motors in the presence of parameter variations and disturbances. An adaptive robust control (ARC) algorithm with simultaneous compensation of all significant nonlinearities is developed. Those nonlinearities include Coulomb friction, cogging force, and nonlinear electromagnetic field effect. The proposed ARC with and without nonlinearity compensation have also been implemented on the Y-axis of a linear-motor-driven industrial gantry. Comparative experimental results show that the proposed ARC algorithm with simultaneous compensation of all significant nonlinearities achieves better motion tracking performance than existing ones. In addition, high-frequency structural flexible modes due to bearing, which are neglected in the previous researches, are explicitly identified experimentally, and their effects are carefully examined. Theoretical analysis is then conducted to generate a set of practically useful guidelines on the tuning of controller gains to optimize the achievable performance in practice.
Year
DOI
Venue
2013
10.1109/TII.2012.2225439
IEEE Trans. Industrial Informatics
Keywords
Field
DocType
machine control,flexible modes,cogging force,linear motor drive systems,adaptive robust control,motion control,bearing flexible modes,motor drives,linear motors,robust control,nonlinear electromagnetic field effect,machine bearings,controller gain tuning,parameter variations,arc algorithm,adaptive robust precision motion control algorithm,y-axis,parameter disturbances,adaptive control,nonlinear control systems,nonlinearity compensation,motion tracking performance,coulomb friction,compensation,high-frequency structural flexible modes,integrated nonlinearity compensation,linear motor,linear-motor-driven industrial gantry,uncertainty,electromagnetics,forging,friction,force,frequency domain analysis
Motion control,Control theory,Nonlinear system,Computer science,Control theory,Control engineering,Adaptive control,Robust control,Linear motor,Match moving,Machine control
Journal
Volume
Issue
ISSN
9
2
1551-3203
Citations 
PageRank 
References 
12
0.76
10
Authors
3
Name
Order
Citations
PageRank
Zheng Chen1398.99
B. Yao294098.18
Qingfeng Wang316617.03