Abstract
As improving fuel efficiency has become an issue in the field of automotive industry, the developments of advanced transmission technologies such as automated manual transmissions (AMTs) and dual clutch transmissions (DCTs) have led to the incentives of energy efficiency. However, the control performance is not quite satisfactory since the dry clutch systems used in conventional transmissions are generally suitable for manual operation by a driver rather than automated controls. To cope with such problems, this paper suggests a novel design for a clutch actuator system suitable for automatic transmissions. System characteristics composed of self-energizing mechanism and the electromechanical device are presented to analyze self-energizing effect and the stiffness of actuator system. Also, the dynamic model and control system for clutch positioning are developed.
Keywords: Clutch, Actuator, Drivetrain System, Self-energizing Effect, Position Control