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Relay Feedback and Wavelet Based Estimation of Plant Model Parameters
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posted on 2023-06-08, 07:14 authored by S Majhi, J S Sahmbi, D P AthertonThe paper presents a relay feedback and wavelet based method for the estimation of completely unknown processes for autotune purposes. From a single symmetrical relay feedback analysis a set of general expressions are presented for on-line process identification. Using these expressions the exact parameters of open loop stable and unstable first order plus time delay (FOPDT) and second order plus time delay (SOPDT) transfer function models may be obtained from simple measurements made on the limit cycle. However, noise in limit cycle output results in inaccurate estimate of the process model parameters. This paper proposes an effective mother wavelet for tracking the critical points of a noisy output signal. Further, using the wavelets based noise reduction it has been shown how accurate measurements can be made on the noisy limit cycle signal. Simulation studies illustrate the value of the proposed identification method
History
Publication status
- Published
ISSN
0191-2216Publisher
IEEE Control Systems SocietyExternal DOI
Volume
4Page range
3326-3331Pages
5.0Presentation Type
- paper
Event name
40th IEEE Conference on Decision and Control, 2001.Event location
Orlando, FloridaEvent type
conferenceISBN
9780780370623Department affiliated with
- Engineering and Design Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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