- Title
- Best achievable tracking performance in sampled-data control systems
- Creator
- Chen, Jie; Hara, Shinji; Qui, Li; Middleton, Rick
- Relation
- 41st IEEE Conference on Decision and Control. Proceedings of the 41st IEEE Conference on Decision and Control (Las Vegas, Nevada 10-13 Dec, 2002) p. 3889-3894
- Publisher Link
- http://dx.doi.org/10.1109/CDC.2002.1184972
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2002
- Description
- In this paper we study the problem of tracking a step reference signal using sampled-data control systems. We investigate the best achievable tracking performance, where the performance is deemed best for it is the minimal attainable by all possible sampled-data stabilizing controllers. Our primary objective is to investigate the fundamental tracking performance limit in sampled-data systems, and to understand whether and how sampling and hold in a sampled-data system may impose intrinsic barriers to performance. For this purpose we derive an analytical expression for the optimal tracking performance. The result shows that a performance loss is generally incurred in a sampled-data system, in comparison to the tracking performance achievable by continuous-time controllers. This loss of performance, as so demonstrated by the expression, can be attributed to the non-minimum behaviors and the aliasing effects generated by samplers and hold devices.
- Subject
- control system analysis; feedback; optimal control; sampled data systems; tracking
- Identifier
- http://hdl.handle.net/1959.13/28639
- Identifier
- uon:2159
- Identifier
- ISBN:0780375165
- Rights
- Copyright © 2002 IEEE. Reprinted from Proceedings of the 41st IEEE Conference on Decision and Control, 3889-3894. 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 the 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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