| 电机-变速器直连系统换挡过程建模及仿真 |
| 陈红旭, 田光宇 |
| 清华大学 汽车安全与节能国家重点实验室, 北京 100084 |
| Modeling and simulation of gear shifting in clutchless coupled motor-transmission system |
| CHEN Hongxu, TIAN Guangyu |
| State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China |
摘要:
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| 摘要相比于有离合器的电机-变速器耦合系统, 电机-变速器直连系统的特性发生了变化, 需要对其换挡过程的特性作深入分析, 并与有离合器系统进行比较。该文运用多体动力学和混杂系统理论建立了电机-变速器直连系统换挡过程的混杂自动机模型, 分析了在不同换挡力、接合套和接合齿圈相对角度和相对转速下, 直连系统换挡品质的变化。通过与有离合器系统进行对比发现, 通过电机的主动同步和对换挡力的控制, 直连系统的换挡品质可以优于有离合器系统。 | |||
| 关键词 ：电动汽车,电机-变速器耦合系统,换挡,无离合器 | |||
| Abstract：Clutchless coupled motor-transmission system characteristics often change, so models are needed to predict their gear shifting characteristics. This study uses multi-body dynamics and hybrid system theories to build a hybrid automaton model of the gear shifting process in the clutchless coupled system. The shifting quality of the clutchless coupled system is then analyzed for various shifting forces and relative rotational positions and speeds of sleeve and the clutch gear. The clutchless coupled system can provide better shifting quality than systems with clutches by actively controlling the motor torque and shifting force. | |||
| Key words：electric vehiclemotor-transmission coupled systemgear shiftingclutchless | |||
| 收稿日期: 2015-04-21 出版日期: 2016-02-17 | |||
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| 基金资助:国家“九七三”重点基础研究发展计划(2011CB711202) | |||
| 通讯作者:田光宇, 教授, E-mail: tian_gy@tsinghua.edu.cnE-mail: tian_gy@tsinghua.edu.cn | |||
| 作者简介: 陈红旭(1986—), 男(汉), 四川, 博士研究生。 | |||
| 引用本文: |
| 陈红旭, 田光宇. 电机-变速器直连系统换挡过程建模及仿真[J]. 清华大学学报（自然科学版）, 2016, 56(2): 144-151. CHEN Hongxu, TIAN Guangyu. Modeling and simulation of gear shifting in clutchless coupled motor-transmission system. Journal of Tsinghua University(Science and Technology), 2016, 56(2): 144-151. |
| 链接本文: |
| http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2015.22.022或 http://jst.tsinghuajournals.com/CN/Y2016/V56/I2/144 |
图表:
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| 图1 电机变速器直连系统结构 |
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| 表1 变速器的结构参数 |
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| 图2 当|Δωslv-gr |≤εω (εω →０+ )或Δωslv-gr＞εω 时接合套和同步环的相互作用过程 |
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| 图3 当Δωslv-gr＜－εω 时接合套和同步环的相互作用过程 |
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| 图4 接合套和接合齿圈的4种作用过程 |
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| 图5 电机变速器直连系统自由度分析 |
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| 图6 接合过程的抽象 |
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| 图7 换挡过程的混杂自动机模型 |
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| 图8 系统状态ωgr、ωslv、vslv随时间的变化曲线 |
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| 图9 不同Δωslv-gr和Fs 下直连系统的换挡时间tsum |
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| 图10 不同Δωslv-gr和Fs 下直连系统的换挡冲击Imax |
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| 表2 直连和有离合器系统的特性对比 |
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| 图11 不同Δωslv-gr和Fs 下直连系统的换挡品质 |
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| 图12 不同Fs 对应的有离合器系统的tsum和Imax |
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| 图13 不同Fs 对应的有离合器系统换挡品质 |
参考文献:
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