A method for improving the robustness of PID control
Skoczowski, S.
Domek, S.
Pietrusewicz, K.
Broel-Plater, B.
Inst. of Control Eng., Szczecin Univ. of Technol., Poland;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Dec. 2005
Volume: 52,
Issue: 6
On page(s): 1669- 1676
ISSN: 0278-0046
INSPEC Accession Number: 8673523
Digital Object Identifier: 10.1109/TIE.2005.858705
Current Version Published: 2005-12-05
Abstract
In this paper, an effective method is proposed for robust proportional-integral-derivative (PID) control that is easily implementable on commonly used equipment such as programmable logic controller (PLC) and programmable automation controller (PAC). The method is based on a two-loop model following control (MFC) system containing a nominal model of the controlled plant and two PID controllers. Basic features exhibited by the MFC structure are presented, and a technique to tune both component controllers is given. The proposed structures have been implemented in a programmable logic controller and tested on control plants with perturbed parameters. Also, the proposed control system has been checked for its performance in cases when the operation of PID controllers is based on fuzzy logic. Tuning rules for the fuzzy controllers in the presented MFC system have been proposed. Results of tests lend support to the view that the proposed control structures may find wide application to robust control of plants with time-varying parameters.
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