Optimal piecewise-linear control of dry clutch engagement

This paper proposes a novel piecewise linear feedback control strategy for the dry clutch engagement process. Based on a dynamic model of the powertrain system, the controller is designed by minimizing a quadratic performance index subject to constraints on the normal force, normal force derivative, and engine speed. The resulting model predictive controller is shown to consist of a piecewise linear feedback control and can be tuned so that fast engagement, small friction losses and smooth lock-up are achieved. Numerical results show the good performance of the closed-loop system. Copyright (C) 2001 IFAC.