DefinePK

Abstract

This paper proposes an intelligent controller tuning technique for a PI controller using a nature inspired metaheuristic algorithm, Firefly algorithm (FA). The PI controller is designed to maintain Dissolved Oxygen (DO) concentration in an aerobic biological reactor of a waste water treatment plant (WWTP). The proposed technique is compared with IMC based PID tuning method and PI parameters of Benchmark Simulation Model1 (BSM1). The PI controller tuned using the proposed technique produces satisfactory response and gives better results when subjected to set-point tracking and disturbance rejection test respectively.