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Vol. 62, Issue 12, December 2005, pp. 473-482

 

Bullet

 

Controller Selection for Flow Process with Dead Time

 

 

Arputha Vijaya Selvi J, Radhakrishnan T.K. and Sundaram S.

Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli 620 015. Tamil Nadu. India

Telephone : +91(431)2501801815, extn:2934, fax: +91(431)2500133

vijayas_02@yahoo.co.in, radha@nitt.edu, ssundar@nitt.edu

 

Received: 11 December 2005 /Accepted: 26 December 2005 /Published: 27 December 2005

 

Abstract: A flow process with varying dead time has been experimentally studied. A dilute solution of sodium chloride is used as tracer and an online conductivity measurement unit as sensor and recorder. Two control algorithms are simulated for the above process and an optimal controller based on the criteria such as faster settling time, minimal overshoot, fast response to set point changes and disturbances change, and minimum ISE and IAE is established. Of the two control algorithms, conventional PI and IMC, the present study reveals that the IMC control scheme is best suited for this process for both servo and regulator problems.

 

Keywords: Model Identification, Dead time, FOPDT, Conventional PI, IMC

 

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