Controlling of non-minimum phase system using harmony search algorithm

Abstract

In this paper, a non-minimum phase system with dead time is controlled by intending the optimized proportional, integral, and derivative controller (PIDC). A system problem is formulated to the non-minimum phase system in which zeroes in the right half-plane (RHP) make system insignificant as delay raises. To enhance the system performance, the factors of the conventional PIDC are optimized by a heuristic algorithm (HA), chosen harmony search (HS). HA, copying the invention of music players, chosen harmony search algorithm (HSA). The HSA looks to acquire a global optimal magnitude of the conventional PIDC and genetic algorithm (GA) in the area portrayed by the regular PID controller and GA. The simulation results demonstrate the transient responses such as settling, rise, peak time, undershoot, and overshoot. Thus to optimized the parameters by minimizing integral square error (ISE) of the given system is improved by the proposed method. © Springer Nature Singapore Pte Ltd. 2019.