- Title
- Nonlinear tracking control for dual-stage actuator systems
- Creator
- Zheng, Jinchuan; Fu, Minyue
- Relation
- 2007 American Control Conference (ACC 07). Proceedings of the 2007 American Control Conference (New York 11-13 July, 2007) p. 82-87
- Publisher Link
- http://dx.doi.org/10.1109/ACC.2007.4282492
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2007
- Description
- This paper presents a nonlinear control method for dual-stage actuator (DSA) systems to track a step command input fast and accurately. Conventional tracking controllers for DSA systems were generally designed to enable the primary actuator to approach the setpoint without overshoot. However, we observe that this strategy is unable to achieve the minimal settling time when the setpoints are beyond the secondary actuator travel limit. To further reduce the settling time, we design the primary actuator controller to yield a closedloop system with a small damping ratio for a fast rise time and certain allowable overshoot. Then, a composite nonlinear control law is designed for the secondary actuator to reduce the overshoot caused by the primary actuator as the system output approaches the setpoint. The proposed control method was applied to an actual DSA positioning system, which consists of a linear motor and a piezo actuator. Experimental results demonstrate that it can further reduce the settling time significantly compared with the conventional control.
- Subject
- actuators; closed loop systems; control system synthesis; damping; nonlinear control systems; position control; tracking
- Identifier
- http://hdl.handle.net/1959.13/937569
- Identifier
- uon:12583
- Identifier
- ISBN:1424409888
- Rights
- Copyright © 2007 IEEE. Reprinted from the Proceedings of the 2007 American Control Conference. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of University of Newcastle's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
- Language
- eng
- Full Text
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