The Open Automation and Control Systems Journal

2014, 6 : 1578-1585
Published online 2014 December 31. DOI: 10.2174/1874444301406011578
Publisher ID: TOAUTOCJ-6-1578

IMC-PID Controller and the Tuning Method in Pneumatic Control Valve Positioner

Yang Liu , Qunli Shang , Shanen Yu , Yayao Fang , Zheng Ding and Jiajiang Li
College of Information Engineering Zhejiang University of Technology, Hangzhou, 310014, China.

ABSTRACT

Pneumatic control valve is the most common automatic instrument in process industry. The control performance of pneumatic control valve not only depends on the parameters of the controller, but also closely relates to the characteristics of the pneumatic control valve. This paper gives out a new method for parameter identification model based on the step response of the control valve system is given, and based on the model parameters this paper gives the calculation method of IMC-PID controller of pneumatic control valve, which proved by simulation and experiments to have fast, accurate and stable control performance.

Keywords:

Pneumatic control valve, PID-tuning, ISE index, Internal model control.