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D. I. Wilson, “Relay-Based PID Tuning,” Automation and Control, Auckland University of Technology, New Zeland, February-March 2005, pp. 10-11.

has been cited by the following article:

• TITLE: A Design of a PID Self-Tuning Controller Using LabVIEW

  AUTHORS: Mohammad A. K. Alia, Tariq M. Younes, Shibel Al Subah

  KEYWORDS: PID Control, Manual Tuning, Self-Tuning, Open-Loop Relay Test, Process Variable, System Offset Error

  JOURNAL NAME: Journal of Software Engineering and Applications, Vol.4 No.3, March 18, 2011

  ABSTRACT: In this paper a trial has been made to design a simple self-tuning LabVIEW-based PID controller. The controller uses an open-loop relay test, calculates the tuned parameters in an open loop mode of operation before it updates controller parameters and runs the process as a closed-loop system. The controller reacts on a persistent offset error value as a result of load disturbance or a set point change. Practical results show that such a controller may be recommended to control a variety of industrial processes. A GUI was developed to facilitate control-mode selection, the setting of controller parameters, and the display of control system variables. GUI makes it possible to put the controller in manual or self-tuning mode.