Naslov
PID Controller Auto-Tuning Based on Process Step Response and Damping Optimum Criterion

Autori
Pavković, Danijel ; Polak, Siniša ; Zorc, Davor

Izvornik
ISA transactions (0019-0578) 53 (2014), 1; 85-96

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
PID controller; PTn process model; damping optimum criterion; identification; auto-tuning control

Sažetak
This paper presents a novel method of PID controller tuning suitable for higher-order aperiodic processes and aimed at step response-based auto-tuning applications. The PID controller tuning is based on the identification of so-called n-th order lag (PTn) process model and application of damping optimum criterion, thus facilitating straightforward algebraic rules for the adjustment of both the closed-loop response speed and damping. The PTn model identification is based on the process step response, wherein the PTn model parameters are evaluated in a novel manner from the process step response equivalent dead-time and lag time constant. The effectiveness of the proposed PTn model parameter estimation procedure and the related damping optimum-based PID controller auto-tuning have been verified by means of extensive computer simulations.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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