標題: An improved auto-tuning scheme for PI controllers
作者: Mudi, Rajani K.
Dey, Chanchal
Lee, Tsu-Tian
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: PI/PID controllers;Ziegler-Nichols tuning;auto-tuning;load disturbance
公開日期: 1-Jan-2008
摘要: 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. (c) 2007, ISA. Published by Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.isatra.2007.07.002
http://hdl.handle.net/11536/9824
ISSN: 0019-0578
DOI: 10.1016/j.isatra.2007.07.002
期刊: ISA TRANSACTIONS
Volume: 47
Issue: 1
起始頁: 45
結束頁: 52
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