Evolutional computation in designing a robust IMC-based PID controller

PID control schemes have been widely used in most process control systems for a long time. However, it is a very important problem how to choose a suitable set of PID parameters. Because these parameters give a great influence on the control performance. In this paper, a new robust PID control scheme is proposed for time-varying system. Finally, the effectiveness of the newly proposed design scheme is evaluated on a numerical simulation example.