论文标题
电动汽车多速变速器体系结构的无射击齿轮的基本限制
Fundamental limitations to no-jerk gearshifts of multi-speed transmission architectures in electric vehicles
论文作者
论文摘要
多速变速器可以提高性能并降低电动汽车的整体成本，但它们也引入了挑战：避免使用齿轮混蛋，有时在有电动机和离合器饱和的情况下可能是不可能的。在本文中，我们介绍了三种定理，这些定理明确定义了由电动机或执行器饱和度导致的No-jerk齿轮的基本局限性。我们将换档器比较，包括将透射扭矩从一个摩擦离合器传输到另一种摩擦离合器，以及其中一个离合器是单向离合器的情况。我们表明，具有单向离合器的系统更容易容易出现运动饱和，从而导致齿轮混蛋通常是不可避免的。我们还研究了行星齿轮集对变速器动力轨迹的影响，并暴露了对无jerk限制的影响。这项工作提供了在新电动汽车的概念设计阶段比较传输体系结构的工具。
Multi-speed transmissions can enhance the performance and reduce the overall cost of an electric vehicle, but they also introduce a challenge: avoiding gearshift jerk, which may sometimes prove to be impossible in the presence of motor and clutch saturation. In this article, we introduce three theorems that explicitly define the fundamental limitations to no-jerk gearshifts resulting from motor or actuator saturation. We compare gearshifts that consist of transferring transmission torque from one friction clutch to another, to the case in which one of the clutches is a one-way clutch. We show that systems with a one-way clutch are more prone to motor saturation, causing gearshift jerk to be more often inevitable. We also study the influence of planetary gearsets on the gearshift dynamical trajectories, and expose the impact on the no-jerk limitations. This work offers tools to compare transmission architectures during the conceptual design phase of a new electric vehicle.
