- Title
- Fundamental performance limitations of modulated and demodulated control systems
- Creator
- Lau, K.; Goodwin, G. C.; M'Closkey, R. T.
- Relation
- 2004 American Control Conference. Proceedings of the 2004 American Control Conference. Vol. 3 (Boston 30 June - 2 July, 2004 ) p. 2069-2074
- Relation
- http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1383765
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2004
- Description
- We consider feedback performance limitations for modulated and demodulated control systems whose base systems have non-minimum phase (NMP) zeros or unstable poles. We first derive a transfer function for the modulated system and then show how the poles and zeros of this function are related to those of the base system. We next analyse the behaviour of the poles and zeros, when the modulation frequency is varied. Bode and Poisson integral constraints for the modulated system are then considered. The effect of a base system delay is also discussed.
- Subject
- control system analysis; poles and zeros; stochastic processes; bode integral constraint; Poisson process; nonminimum phase zeros; unstable poles
- Identifier
- uon:2155
- Identifier
- http://hdl.handle.net/1959.13/28620
- Identifier
- ISBN:0780383354
- Identifier
- ISSN:0743-1619
- Rights
- Copyright © 2004 IEEE. Reprinted from the American Control Conference 2004, Vol. 3, p. 2069-2074. 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.
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