Design of a Robust PID Controller for Improved Transient Response Performance of a Linearized Engine Idle Speed Model

Abstract: One of the advantages of automatic control system is its application to the regulation of internal combustion engines. An area of significance in fuel energy reduction and efficiency improvement is the control engine idling speed. This paper has presented a control system for improved transient response performance of a linearized engine idle speed model. In order to realize the aim of the work, nonlinear dynamics of engine idle speed are obtained and were later linearized. A proportional integral and derivative (PID) controller was designed using a robust response time tuning of the PID to give the Robust PID controller. The designed controller was integrated with the linearized engine idle speed model. Simulations were conducted using Matlab software for when no step input disturbance entered the control loop and when step input disturbance entered the control loop to ascertain the robustness of the designed controller. The results obtained comfirmed the robustness of the controller.