Internal model control for industrial wireless plant subject to measured round trip delays

This paper presents a study of Internal Model Control (IMC) scheme to improve control performance of industrial wireless networked control system subject to measured round trip delays. As compared to the auto-tuned optimized PID controller, IMC controller helps to significantly reduce percentage of overshoot for a first order with dead-time process plant. The paper also highlights the differences in control performance of the process plant with lumped network delay and separate network delays.