Development of automatic flow control system for the practice of Ziegler-Nichols and Cohen-Coon control theory

Ziegler-Nichols와 Cohen-Coon 제어 이론의 실습을 위한 자동 유량제어 시스템의 구축

  • Received : 2017.05.10
  • Accepted : 2017.07.26
  • Published : 2017.07.31

Abstract

Automatic flow control system composed by hardware and software was designed and fabricated to be used as teaching tool of feedback control theory in university experimental class. This system includes hardwares like data acquisition board, flow measuring device, transmitters, and the pneumatic valve, and software like LabView program for the monitoring and control of flow rates. The system was designed as the student can see the control effect of not only set point but also disturbance changes. Also the LabView program was composed for the calculation of controller parameters of both Ziegler-Nichols and Cohen-Coon tuning. The students can apply both tuning constants and compare the control performances. This system will provide the easy way for the students to understand the function and specification of control hardwares, and to raise the programing ability of control software.

Keywords

Automatic flow control;PID control;LabView;Ziegler-Nichols tuning;Cohen-Coon tuning

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Acknowledgement

Supported by : 공주대학교