中圖分類號： TN3
文獻標識碼： A
DOI：10.16157/j.issn.0258-7998.200117
中文引用格式： 汪秋婷，戚偉，沃奇中. 基于魚叉式換檔同步器的純電動汽車動態分析[J].電子技術應用，2020，46(11)：91-95.
英文引用格式： Wang Qiuting，Qi Wei，Wo Qizhong. Dynamic analysis of pure electric vehicle based on Harpoon-shift synchronizer[J]. Application of Electronic Technique，2020，46(11)：91-95.

Dynamic analysis of pure electric vehicle based on Harpoon-shift synchronizer

Abstract： In order to improve the shift quality and overall energy efficiency of pure electric vehicles, a multi-gear electric vehicle powertrain system with a Harpoon-shift synchronizer as an alternative to the traditional cone clutch synchronizer is presented. An original dynamic model of the Harpoon-shift mechanism is established to investigate the transient responses of driveline system during gear shifting process. A shifting control algorithm based on a special step function is put forward to improve the driving comfort. The experiments were conducted to validate the effectiveness of the proposed mathematic model and control strategy. The results indicate that the jerk reduces considerably during engagement using the optimized torque springs. Besides, it shows that the significant advantages of the proposed Harpoon-shift synchronizer compared to traditional synchronizers.

Key words : Harpoon-shift；synchronizer；electric vehicle；torque spring stiffness；rotary inertia