Harmony search algorithm for infinite impulse response system identification |
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Authors: | S.K. Saha R. Kar D. Mandal S.P. Ghoshal |
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Affiliation: | 1. Department of Electronics and Communication Engg., NIT Durgapur, India;2. Department of Electrical Engg., NIT Durgapur, West Bengal, India |
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Abstract: | In this paper, optimal sets of filter coefficients are searched by a meta-heuristic optimization technique called Harmony Search (HS) algorithm for infinite impulse response (IIR) system identification problem. For different optimization problems, HS algorithm undergoes three basic rules; namely Random Selection (RS), Harmony Memory Consideration (HMC), and Pitch Adjustment (PA) rules, which are inspired from the process that the musicians use to improvise a perfect state of harmony with the consummate skill of blending notes in tune. With the help of the properly selected control parameters, a perfect balance is achieved in exploration and exploitation in searching phases. The detailed analysis of simulation results emphasizes the strength of HS algorithm to find the near-global optimal solution, quality of convergence profile and the speed of convergence while tested against standard benchmark examples for same and reduced order models. |
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