A Study of MPSO-based PID Controller on Boiler Drum Water Level

In this paper, a modified particle swarm optimization (MPSO) was introduced for tuning the parameters of PID controller on boiler drum water level. Compared with basic particle swarm optimization (BPSO), MPSO enhances the searching ability, escapes particles from falling into the local minimum and makes the searching of global optimal solution more efficiently by adopting solution sharing and searching range sharing. A new error criterion was proposed to validate the performance of PID controller based on MPSO (MPSO-PID). The experimental results show that the MPSO-PID achieves better time response than the PID controller based on BPSO (BPSO-PID).