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Development of High Force Electromechanical Linear Actuator for Shift-By-Wire Automated Manual Transmissions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2006 by SAE International in United States
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Electromechanical actuation systems are being considered as an alternative to hydraulic systems for controlling clutches and gearshifts in transmissions, since they offer the potential for improved efficiency, better packaging and a reduction in component count. A high-force direct-drive linear electromechanical actuator has been developed which acts directly on the shift rails of either an Automated Manual Transmission (AMT) or a Dual Clutch Transmission (DCT) to facilitate gear selection and provide shift-by-wire functionality. This actuation scheme offers a number of advantages over electric motor and gearbox actuator designs, including simplified construction; the elimination of mechanical gearing, which reduces mechanical hysteresis, backlash and compliance; a low component count, which results in improved robustness; a better dynamic response and the potential for zero ‘off-state’ power consumption. The actuator is controlled using a PD control scheme and MOSFET H-bridge power electronic drive.
CitationTurner, A., Ramsay, K., Clark, R., and Howe, D., "Development of High Force Electromechanical Linear Actuator for Shift-By-Wire Automated Manual Transmissions," SAE Technical Paper 2006-01-0360, 2006, https://doi.org/10.4271/2006-01-0360.
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