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International Journal of Automotive Technology > Volume 22(1); 2021 > Article
International Journal of Automotive Technology 2021;22(1): 155-164.
doi: https://doi.org/10.1007/s12239-021-0016-4
Tan Senqi, Yang Jue, Amir Khajepour, Zhao Xinxin, Yu Wenhao
1University of Science and Technology Beijing
2University of Waterloo
PDF Links Corresponding Author.  Yang Jue , Email. yangjue@ustb.edu.cn
To improve the economic and comfort performance of pure electric vehicles (PEV), this paper proposes a novel H-infinity gear-shifting controller for dual-speed Transmissions (DST) to achieve a smooth and swift shifting when considering uncertain disturbances in system. Firstly, the structure as well as the working principle of the DST for PEV are introduced briefly and the mathematical model of the transmission is derived according to the Lagrange equation. Then the gear-shifting process is analyzed and the control problem is formulated according to the clutch status. Next, a robust Hinfinity controller is proposed to attenuate the vehicle jerk as well as the clutch sliding energy loss. Simulation results under different working conditions indicate the controller presented have better performance in limiting the effect of unknown external disturbances comparing to a calibrated proportional-integral derivative (PID) controller.
Key Words: Shifting control, Double-speed transmission, H-infinity control, Robust, Pure electric vehicle
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