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Optimizing stability bounds of finite-precision PID controller structures

Optimizing stability bounds of finite-precision PID controller structures
Optimizing stability bounds of finite-precision PID controller structures
The paper investigates a recently derived lower bound stability measure for sampled-data controller structures subject to finite-word-length (FWL) constraints. The optimal realization of the digital PID controller with FWL considerations is formulated as a nonlinear optimization problem, and an efficient strategy based on adaptive simulated annealing (ASA) is adopted to solve this complex optimization problem. A numerical example of optimizing the finite-precision PID controller structure for a simulated steel rolling mill system is presented to illustrate the effectiveness of the proposed strategy.
0018-9286
2149-2153
Chen, S.
ac405529-3375-471a-8257-bda5c0d10e53
Wu, J.
5a0119e5-a760-4ff5-90b9-ec69926ce501
Istepanian, R. H.
b71b8b46-cb69-4fcd-8253-d2e7a93079ea
Chu, J.
08744087-3532-4f12-9d8a-5c8e5d79be0e
Chen, S.
ac405529-3375-471a-8257-bda5c0d10e53
Wu, J.
5a0119e5-a760-4ff5-90b9-ec69926ce501
Istepanian, R. H.
b71b8b46-cb69-4fcd-8253-d2e7a93079ea
Chu, J.
08744087-3532-4f12-9d8a-5c8e5d79be0e

Chen, S., Wu, J., Istepanian, R. H. and Chu, J. (1999) Optimizing stability bounds of finite-precision PID controller structures. IEEE Transactions on Automatic Control, 44 (11), 2149-2153.

Record type: Article

Abstract

The paper investigates a recently derived lower bound stability measure for sampled-data controller structures subject to finite-word-length (FWL) constraints. The optimal realization of the digital PID controller with FWL considerations is formulated as a nonlinear optimization problem, and an efficient strategy based on adaptive simulated annealing (ASA) is adopted to solve this complex optimization problem. A numerical example of optimizing the finite-precision PID controller structure for a simulated steel rolling mill system is presented to illustrate the effectiveness of the proposed strategy.

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Published date: November 1999
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 251055
URI: http://eprints.soton.ac.uk/id/eprint/251055
ISSN: 0018-9286
PURE UUID: 143e7849-7e55-4d83-a039-7b7094f49a7b

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Date deposited: 08 Nov 1999
Last modified: 16 Dec 2019 20:47

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