PID2018 Benchmark Challenge: Model-based Feedforward Compensator with A Conditional Integrator

TL;DR

This paper introduces a novel control strategy combining a feedforward compensator and a conditional integrator for a refrigeration system, demonstrating improved disturbance compensation and steady-state error removal in the PID2018 Benchmark Challenge.

Contribution

It presents a new control approach that enhances PID controller performance using model-based feedforward and conditional integration techniques.

Findings

Effective disturbance compensation demonstrated

Steady-state error eliminated in simulations

Outperforms existing control methods

Abstract

Since proportional-integral-derivative (PID) controllers absolutely dominate the control engineering, numbers of different control structures and theories have been developed to enhance the efficiency of PID controllers. Thus, it is essential and inspiring to operate different PID control strategies to the PID2018 Benchmark Challenge. In this paper, a novel control strategy is designed for this refrigeration system, where a feedforward compensator and a conditional integrator are utilized to compensate the disturbances and remove the steady-state error in the benchmark problem, respectively. The simulation results given in the benchmark problem show the straightforward effectiveness of the proposed control structure compared with the existing control methods.