Paper: A method for auto-tuning of PID control parameters

Authors:
Yoshikazu Nishikawa;Nobuo Sannomiya;Tokuji Ohta;Haruki Tanaka
Affiliations:
Department of Electrical Engineering, Kyoto University, Yoshida, Kyoto 606, Japan;Department of Electrical Engineering, Kyoto University, Yoshida, Kyoto 606, Japan;Fuji Facom Corporation, 1 Fuji-machi, Hino, Tokyo 191, Japan;Fuji Facom Corporation, 1 Fuji-machi, Hino, Tokyo 191, Japan
Venue:
Automatica (Journal of IFAC)
Year:
1984

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Abstract

A method for automatic tuning of the PID process control parameters, usually called 'auto-tuning', is developed. The procedure of applying the method consists of (1) sampling a process response to a test input signal, (2) processing the sampled data for estimating characteristic values of the process, and (3) calculating the optimal values of the PID control parameters. For the optimization, a new type of performance index, i.e. a weighted integral of squared error is introduced. The procedure is implemented on a digital controller using microprocessors and applied to some real processes, yielding satisfactory results.