Automatic tuning of gain-scheduled control for asymmetrical processes

K. K. Tan; Q. G. Wang; T. H. Lee; C. H. Gan

doi:10.1016/S0967-0661(98)00091-4

Automatic tuning of gain-scheduled control for asymmetrical processes

K. K. Tan, Q. G. Wang, T. H. Lee, C. H. Gan

National University of Singapore

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

This paper presents an automatic tuning procedure for gain-scheduled control of asymmetrical processes. A modified relay feedback is employed to obtain a frequency response estimation for the dual dynamics of the asymmetrical process, where a novel gain-matching and frequency-matching method is developed to correct an asymmetry phenomenon associated with the oscillations induced from a direct application of basic relay feedback. Based on the frequency response estimation and a closed-loop identification of the process gain, two first-order transfer function models are fitted to the process. Subsequently, a gain-scheduled PI control can be tuned according to the process models, so that the compensated system satisfies user-specified gain and phase margin requirements. Simulation examples are provided for illustration.

Original language	English
Pages (from-to)	1353-1363
Number of pages	11
Journal	Control Engineering Practice
Volume	6
Issue number	11
DOIs	https://doi.org/10.1016/S0967-0661(98)00091-4
Publication status	Published - Nov 1998
Externally published	Yes

Keywords

Asymmetrical processes
Gain scheduling
Process identification
Relay auto-tuning

ASJC Scopus subject areas

Control and Systems Engineering
Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

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10.1016/S0967-0661(98)00091-4

Cite this

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abstract = "This paper presents an automatic tuning procedure for gain-scheduled control of asymmetrical processes. A modified relay feedback is employed to obtain a frequency response estimation for the dual dynamics of the asymmetrical process, where a novel gain-matching and frequency-matching method is developed to correct an asymmetry phenomenon associated with the oscillations induced from a direct application of basic relay feedback. Based on the frequency response estimation and a closed-loop identification of the process gain, two first-order transfer function models are fitted to the process. Subsequently, a gain-scheduled PI control can be tuned according to the process models, so that the compensated system satisfies user-specified gain and phase margin requirements. Simulation examples are provided for illustration.",

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year = "1998",

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AU - Tan, K. K.

AU - Wang, Q. G.

AU - Lee, T. H.

AU - Gan, C. H.

PY - 1998/11

Y1 - 1998/11

N2 - This paper presents an automatic tuning procedure for gain-scheduled control of asymmetrical processes. A modified relay feedback is employed to obtain a frequency response estimation for the dual dynamics of the asymmetrical process, where a novel gain-matching and frequency-matching method is developed to correct an asymmetry phenomenon associated with the oscillations induced from a direct application of basic relay feedback. Based on the frequency response estimation and a closed-loop identification of the process gain, two first-order transfer function models are fitted to the process. Subsequently, a gain-scheduled PI control can be tuned according to the process models, so that the compensated system satisfies user-specified gain and phase margin requirements. Simulation examples are provided for illustration.

AB - This paper presents an automatic tuning procedure for gain-scheduled control of asymmetrical processes. A modified relay feedback is employed to obtain a frequency response estimation for the dual dynamics of the asymmetrical process, where a novel gain-matching and frequency-matching method is developed to correct an asymmetry phenomenon associated with the oscillations induced from a direct application of basic relay feedback. Based on the frequency response estimation and a closed-loop identification of the process gain, two first-order transfer function models are fitted to the process. Subsequently, a gain-scheduled PI control can be tuned according to the process models, so that the compensated system satisfies user-specified gain and phase margin requirements. Simulation examples are provided for illustration.

KW - Asymmetrical processes

KW - Gain scheduling

KW - Process identification

KW - Relay auto-tuning

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JO - Control Engineering Practice

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ER -

Automatic tuning of gain-scheduled control for asymmetrical processes

Abstract

Keywords

ASJC Scopus subject areas

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