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EISSN: 2313-3724, Print ISSN:2313-626X

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 Volume 4, Issue 11 (November 2017), Pages: 127-132


 Original Research Paper

 Title: Real time fractional-order control technique for coupled tank liquid level control process

 Author(s): Ahmet Dumlu *, Kagan Koray Ayten


 Department of Electrical & Electronics Engineering, College of Engineering, Erzurum Technical University, Erzurum, Turkey

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This paper presents real time fractional-order control technique for a coupled tank liquid level system that often used in industry. First of all system dynamic model has been presented. And then two different control approaches such as the classical proportional–integral–derivative (PID) and fractional-order PIλDμ control are used to improve the tracking performance of the coupled tank liquid level system. Design procedures for both controllers are given in detail. Additionally, to verify the effectiveness of the fractional-order PID controller, detailed experimental comparisons with a feedforward proportional integral controller has been realized. It is observed that not only transient but also steady-state error values have been reduced with the aid of the PIλDμ controller for tracking control purpose. 

 © 2017 The Authors. Published by IASE.

 This is an open access article under the CC BY-NC-ND license (

 Keywords: Liquid level control system, Fractional order controller, PIλDμ controller

 Article History: Received 22 February 2017, Received in revised form 10 September 2017, Accepted 25 September 2017

 Digital Object Identifier:


 Dumlu A and Ayten K (2017). Real time fractional-order control technique for coupled tank liquid level control process. International Journal of Advanced and Applied Sciences, 4(11): 127-132

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