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Vol. 97, Issue 10, October 2008, pp.34-44





Performance of Globally Linearized Controller and Two Region Fuzzy Logic Controller on a Nonlinear Process


1N. Jaya, 2D. Sivakumar, 3R. Anandanatarajan
1,2Department of Electronics & Instrumentation Engineering,
Faculty of Engineering & Technology, Annamalai University, Annamalainagar, 608002
Tamilnadu, India
3Department of Electronics & Instrumentation Engineering, Pondicherry Engineering College, Pondicherry, India
E-mail: jayaramesh75@yahoo.co.in, jayanavaneethan@rediffmail.com

Received: 12 September 2008 /Accepted: 22 October 2008 /Published: 31 October 2008



Abstract: In this work, a design and implementation of a Conventional PI controller, single region fuzzy logic controller, two region fuzzy logic controller and Globally Linearized Controller (GLC) for a two capacity interacting nonlinear process is carried out. The performance of this process using single region FLC, two region FLC and GLC are compared with the performance of conventional PI controller about an operating point of 50 %. It has been observed that GLC and two region FLC provides better performance. Further, this procedure is also validated by real time experimentation using dSPACE.


Keywords: Nonlinear control, GLC, Two capacity interacting process, Fuzzy logic controller, dSPACE


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