Title: Dry clutch control based on electromechanical actuator position feedback loop

Authors: Joško Deur; Vladimir Ivanović; Zvonko Herold; Milan Kostelac; Hongtei Eric Tseng

Addresses: Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, Zagreb, HR-10002, Croatia ' Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, Zagreb, HR-10002, Croatia ' Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, Zagreb, HR-10002, Croatia ' Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, Zagreb, HR-10002, Croatia ' Ford Research and Innovation Center, 2101 Village Road, Dearborn 48121, USA

Abstract: The paper presents identification and control of an experimental dry clutch actuated by a geared dc motor and ball-ramp mechanism. The identification results are used to describe the multi-dimensional clutch friction coefficient characteristic. The proposed clutch torque control system is based on closed-loop actuator position control and the identified friction coefficient curves. In order to compensate for a clutch pack thermal expansion effect, which affects the torque control accuracy, the control strategy is extended with feedforward or feedback path that outputs a position reference additive signal. The torque control strategy is verified experimentally within a clutch slip speed control system.

Keywords: dry clutch control; identification; experimental systems; electromechanical actuators; position control; feedback control; friction coefficient; vehicle design; torque control; clutch slip speed.

DOI: 10.1504/IJVD.2012.050086

International Journal of Vehicle Design, 2012 Vol.60 No.3/4, pp.305 - 326

Received: 21 Apr 2011
Accepted: 31 Oct 2011

Published online: 26 Oct 2012 *

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