Title: Harmony search based particle swarm optimisation approach for optimal PID control in electroslag remelting process

Authors: Fang Cao; Wei Wang

Addresses: Department of Automation, Dalian University of Technology, Dalian 116023, China. ' Department of Automation, Dalian University of Technology, Dalian 116023, China

Abstract: In this paper, electroslag remelting (ESR) furnace process is considered and control schemes including multivariable decoupling, fuzzy self-tuning time-delay and harmony search based particle swarm optimisation (HSPSO) approach for optimal PID control are given. Especially, harmony search (HS) provides a new method of producing new individuals to complement the shortcoming of weak local search in PSO algorithm. Also, excellent global optimisation performance of HSPSO is demonstrated by comparing with other intelligent algorithms. Finally, the proposed control schemes are applied in 3t Consarc ESR furnace, which demonstrates the effectiveness and adaptability of the proposed method in industrial application.

Keywords: electroslag remelting; ESR; harmony search based PSO; particle swarm optimisation; HSPSO; decoupling; fuzzy self-tuning; time delay; PID control; optimal control; ESR furnaces; multivariable decoupling.

DOI: 10.1504/IJMIC.2012.043937

International Journal of Modelling, Identification and Control, 2012 Vol.15 No.1, pp.20 - 27

Published online: 29 Nov 2014 *

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