Simulation of electro-mechanical friction clutch control using proportional derivative plus conditional integral control scheme for automotive application

Abstract

This paper explains simulation works carried out to evaluate the performance of proportional-integral-derivative-based (PID-based) controls in controlling the electro-mechanical friction clutch (EMFC) for engagement and disengagement. The EMFC model is developed in Matlab/Simulink comprising DC motor's model and power screw mechanism's model. Four controls; proportional-integral (PI), proportional-integral-derivative (PID), proportional (P) and proportional derivative (PD), are applied on the model using 6 mm as the set point for the power screw's position. Among them, PD control performs the best with 0% overshoot, 0.041 mm steady state error and about 1.3 seconds settling time. Next, the PD control is updated with a conditional integral controller (PDPCI), resulting in approximately zero steady state error and only 0.68% overshoot, while settling time stays at 1.3 seconds. Subsequently, both PD and PDPCI controls are simulated to achieve EMFC's full engagement and disengagement. The final results show that PDPCI control performs the best with minimum overshoot.