双侧独立电驱动履带车辆自动机械变速器线控换挡控制方法
Control Method for AMT Shifting of a Shift-by-wire Bilateral Electric Drive Tracked Vehicle
查看参考文献15篇
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文摘
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为应用自动机械变速器(AMT)实现双侧独立电驱动履带车辆的换挡,降低换挡控制难度,设计非道路行驶时的换挡控制方法。基于无离合器、有同步器的两挡行星AMT,通过线控系统及纯电动换挡机构进行换挡操纵;对驱动电机调速以实现主动同步,接近同步后开始挂挡,由同步器辅助精确同步;使两侧变速器同时开始换挡,但不要求两侧精确同时完成。在软土路面进行实车正向行驶试验,连续换挡多次均成功,换挡过程稳定流畅。试验结果表明:同步器未明显发生锁止与磨损;升挡及减挡时间均会随换挡起始车速的增高而增加;换挡起始车速不变时,升挡时间常大于减挡时间;两侧换挡用时差异性较小,基本同时完成;换挡期间,外界影响主要表现为行驶阻力,导致车辆减速,车辆未因路面的随机差异性而出现两侧明显差速现象。 |
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其他语种文摘
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A suitable simplified shifting control method is designed for using automated mechanical transmission(AMT)to realize the shifting of bilateral electric drive tracked vehicle. AMT is a clutchless two-speed planetary gearbox. Gear shifting is electric and driven by wire. During synchronizing phase,the speed of input shaft is roughly synchronized using traction motor;during gear engaging phase,the accurate speed matching is supposed to be ensured by the synchronizer. Two gearboxes are used for vehicle shifting. Their shifting processes start simultaneously and last independently. Upshifting and downshifting are tested for many times when driving forwardly on soft soil land. Test results show that shifting is executed successfully and efficiently;the synchronizers hardly lock to cause wear;upshifting needs longer time than downshifting as vehicle speed remains unchanged;upshifting and downshifting times both tend to be longer as vehicle speed becomes higher;two gearboxes accomplish shifting almost simultaneously;while shifting,the environment mainly causes vehicle speed reduction,and hardly causes the speed difference of vehicle track. |
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来源
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兵工学报
,2021,42(3):459-467 【核心库】
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DOI
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10.3969/j.issn.1000-1093.2021.03.002
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关键词
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履带车辆
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两挡行星自动机械变速器
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双侧独立电驱动
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线控换挡
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地址
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北京理工大学机械与车辆学院, 北京, 100081
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-1093 |
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学科
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武器工业 |
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文献收藏号
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CSCD:6961353
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