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An improved auto-tuning scheme for PI controllers.
ISA Trans 2008; 47(1):45-52IT

Abstract

Ziegler-Nichols tuned PI and PID controllers are usually found to provide poor performances for high-order and nonlinear systems. In this study, an improved auto-tuning scheme is presented for Ziegler-Nichols tuned PI controllers (ZNPICs). With a view to improving the transient response, the proportional and integral gains of the proposed controller are continuously modified based on the current process trend. The proposed controller is tested for a number of high-order linear and nonlinear dead-time processes under both set-point change and load disturbance. It exhibits significantly improved performance compared to ZNPIC, and Refined Ziegler-Nichols tuned PI controller (RZNPIC). Robustness of the proposed scheme is established by varying the controller parameters as well as the dead-time of the process under control.

Authors+Show Affiliations

Department of Instrumentation and Electronics Engineering, Jadavpur University, Sector III, Block LB/8, Salt-lake, Calcutta 700098, India. rkmudi@yahoo.comNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17854807

Citation

Mudi, Rajani K., et al. "An Improved Auto-tuning Scheme for PI Controllers." ISA Transactions, vol. 47, no. 1, 2008, pp. 45-52.
Mudi RK, Dey C, Lee TT. An improved auto-tuning scheme for PI controllers. ISA Trans. 2008;47(1):45-52.
Mudi, R. K., Dey, C., & Lee, T. T. (2008). An improved auto-tuning scheme for PI controllers. ISA Transactions, 47(1), pp. 45-52.
Mudi RK, Dey C, Lee TT. An Improved Auto-tuning Scheme for PI Controllers. ISA Trans. 2008;47(1):45-52. PubMed PMID: 17854807.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - An improved auto-tuning scheme for PI controllers. AU - Mudi,Rajani K, AU - Dey,Chanchal, AU - Lee,Tsu-Tian, Y1 - 2007/09/12/ PY - 2006/08/21/received PY - 2007/07/21/accepted PY - 2007/9/15/pubmed PY - 2008/3/26/medline PY - 2007/9/15/entrez SP - 45 EP - 52 JF - ISA transactions JO - ISA Trans VL - 47 IS - 1 N2 - Ziegler-Nichols tuned PI and PID controllers are usually found to provide poor performances for high-order and nonlinear systems. In this study, an improved auto-tuning scheme is presented for Ziegler-Nichols tuned PI controllers (ZNPICs). With a view to improving the transient response, the proportional and integral gains of the proposed controller are continuously modified based on the current process trend. The proposed controller is tested for a number of high-order linear and nonlinear dead-time processes under both set-point change and load disturbance. It exhibits significantly improved performance compared to ZNPIC, and Refined Ziegler-Nichols tuned PI controller (RZNPIC). Robustness of the proposed scheme is established by varying the controller parameters as well as the dead-time of the process under control. SN - 0019-0578 UR - https://www.unboundmedicine.com/medline/citation/17854807/An_improved_auto_tuning_scheme_for_PI_controllers_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0019-0578(07)00101-2 DB - PRIME DP - Unbound Medicine ER -