| MODELLING, ANALYSIS AND SIMULATION OF A NOVEL
AUTOMATED MANUAL TRANSMISSION WITH GEARSHIFT
ASSISTANT MECHANISM |
Zhiqiang Sun1, 2
, Bingzhao Gao3, Jiaqi Jin1, Kazushi Sanada2 |
1Shenyang University of Technology
2Yokohama National University
3Jilin University |
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| ABSTRACT |
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To eliminate or reduce torque interruption and driveline jerk for traditional automated manual transmission
(AMT), AMT with a gearshift assistant mechanism (GAM) is originally proposed in this paper. The GAM consists of a torque
complementary motor and an epicyclic mechanism with a synchronizing clutch. During gear upshift, the electrical motor
provides complementary torque to primary (output) shaft after synchronizer discharges, then the synchronizing clutch will
work to synchronize primary shaft with anticipated gear. The lockup of the synchronizing clutch will ensure the
synchronization of primary shaft and anticipated gear. After finishing synchronizing, synchronizer will lock up the anticipated
gear and engine recovers torque supply to finish gearshift. Based on the mathematical model of the proposed transmission, its
detailed structure, kinematic character and dynamic behavior are discussed. Controllers are designed to achieve presumed
gearshift performance, and simulation results show its effectiveness. Problems may be encountered in engineering application
and possible application on electrical vehicle (EV) of the proposed transmission are also discussed. Finally, this paper
summarized the merits and further research targets of the proposed transmission, which is a promising structure to achieve
swift and smooth gearshift. |
| Key Words:
Automated manual transmission, Power-shift transmission, Gearshift assistant mechanism, Shift control |
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Corresponding Author.
Kazushi Sanada , Email. 
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