Authors: Bingzhao Gao; Hong Chen
Addresses: State Key Laboratory of Automotive Simulation and Control, Jilin University (Campus NanLing), Renmin Str. 5988, Changchun 130025, China ' State Key Laboratory of Automotive Simulation and Control, Jilin University (Campus NanLing), Renmin Str. 5988, Changchun 130025, China; Department of Control Science and Engineering, Jilin University (Campus NanLing), Renmin Str. 5988, Changchun 130025, China
Abstract: Step-ratios transmissions including automated manual transmission (AMT), automatic transmission (AT) and dual clutch transmission (DCT), have fixed gear ratios, and the gear ratio changes abruptly within a short time when vehicle is launched or gear shift is operated. The longitudinal dynamic control must be addressed to achieve satisfied drivability during start-up and shift process. The researches about the dynamics and control of step-ratio transmissions and clutches are reviewed, and some possible control opportunities are pointed out. The step-ratio transmissions adopted by hybrid electric vehicles (HEVs) and electric vehicles (EVs) are introduced as well.
Keywords: automated manual transmission; AMT; automatic transmission; dual clutch transmission; DCT; inverse AMT; I-AMT; estimation; model-based control; step-ratio transmissions; longitudinal dynamic control; hybrid electric vehicles; HEVs.
International Journal of Powertrains, 2014 Vol.3 No.2, pp.197 - 220
Received: 03 Apr 2012
Accepted: 11 Jan 2013
Published online: 21 Jun 2014 *