Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/62623
Title: PID tuning for unstable processes based on gain and phase-margin specifications
Authors: Ho, W.K. 
Xu, W.
Keywords: PID control
Unstable processes
Issue Date: 1998
Source: Ho, W.K.,Xu, W. (1998). PID tuning for unstable processes based on gain and phase-margin specifications. IEE Proceedings: Control Theory and Applications 145 (5) : 392-396. ScholarBank@NUS Repository.
Abstract: PID control is widely used to control stable processes, however, PID control for unstable processes is less common. In the paper, simple formulas are derived to tune the PID controller for unstable processes to meet gain and phase margin specifications. The stability of the closed-loop system is ensured by the Nyquist stability criterion. These formulas are derived for first- and second-order processes with time delay. Simulation results are given to show the accuracy of the formulas and the performance that can be achieved. © IEE, 1998.
Source Title: IEE Proceedings: Control Theory and Applications
URI: http://scholarbank.nus.edu.sg/handle/10635/62623
ISSN: 13502379
Appears in Collections:Staff Publications

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