Computer Science – Systems and Control
Scientific paper
2012-02-25
Proceedings of 2011 International Conference on Process Automation, Control and Computing, PACC 2011, art. no. 5979043, July 2
Computer Science
Systems and Control
6 pages, 8 figures
Scientific paper
10.1109/PACC.2011.5979043
Rational approximation of fractional order (FO) differ-integrators via Continued Fraction Expansion (CFE) is a well known technique. In this paper, the nominal structures of various generating functions are optimized using Genetic Algorithm (GA) to minimize the deviation in magnitude and phase response between the original FO element and the rationalized discrete time filter in Infinite Impulse Response (IIR) structure. The optimized filter based realizations show better approximation of the FO elements in comparison with the existing methods and is demonstrated by the frequency response of the IIR filters.
Das Saptarshi
Das Shantanu
Gupta Amitava
Majumder Basudev
Pakhira Anindya
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