PSO Based PID Controller for Hard Disk Controller

In todays fast growing world, there is an urgent need to increase the production rate in process industries which consists of numerous non-linear processes. Hence it is important to design a stabilizing controller. The aim of the paper is to design optimum Proportional- Integral- Derivative (PID) controller using Particle Swarm Optimization (PSO). In this paper the algorithm is applied to control the position head of the hard disk controllers using both PID and PSO-PID controllers. The performance of PID controller is compared with PSO-PID controller by calculating Overshoot value, Rise time, Settling time and Steady state error in both the cases. According to simulation and experimental results PSO-PID controller is proven to be more efficient and result also suggests that PSO converges with less number of functional evaluations.