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		T. VINOPRABA,N. SIVAKUMARAN,S. NARAYANAN,K. RADHAKRISHNAN.[en_title][J].Control Theory and Technology,2012,10(3):297~302.[Copy]

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T.VINOPRABA,N.SIVAKUMARAN,S.NARAYANAN,K.RADHAKRISHNAN
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(Department of Instrumentation and Control Engineering, National Institute of Technology;Department of Chemical Engineering, National Institute of Technology)

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Received:March 07, 2011Revised:July 01, 2011

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Design of internal model control based fractional order PID controller

T. VINOPRABA,N. SIVAKUMARAN,S. NARAYANAN,K. RADHAKRISHNAN

(Department of Instrumentation and Control Engineering, National Institute of Technology;Department of Chemical Engineering, National Institute of Technology)

Abstract:

This article presents a design of the internal model control (IMC) based single degree of freedom (SDF) fractional order (FO) PID controller with a desired bandwidth specification for a class of fractional order system (FOS). The drawbacks of the SDF FO-IMC are eliminated with the help of the two-degree of freedom (TDF) FO PID controller. The robust stability and robust performance of the designed controller are analyzed using an example.

Key words: Fractional order PID controller Fractional order systems Model based control Robust control