2014年第2期
文章编号：10094687(2014)02000105
车辆与动力技术 Vehicle & Power Technology
URL: http://www, cnki. ne/kcms/detail/11. 4493. TH. 20140526. 1445. 002. html
总第134期
两段式机电复合传动系统换段过程建模与仿真马越，罗翔，项昌乐'，张东好，马文杰，聂海（1.北京理工大学机械与车辆学院，北京100081；2.内蒙古第一机械（集团）公司科研所，包头014030）
摘要：针对一种两段式机电复合传动系统在换段过程中现的混杂特性，采用切换系统建模方法对换段过程进行了研究。考虑前传动联轴器的柔性特性，建立了等效刚度-阻尼模型；分析了功率分流机构中构件的作用关系，建立了两段式机电复合传动系统换段过程的切换型动力学模型；制定了基于规则的升降段策略，并设计了基于事件的切换律，基于MATLAB/Simulink，搭建了系统的仿真模型，进行伤真分析．结果表明，切换系统动
力学模型是切实有效的，在此基础上设计的切换律是合理的；换段过程驱动转矩变化平稳关键词：车辆工程；机电复合传动；换段过程；切换系统；切换律
中图分类号：U469.72
文献标识码：A
ModelingandSimulationofModeSwitchingProcessfora Two-modeElectro-mechanical VariableTransmission
MA Yue'，LUO Xiang'.
XIANG Chang-le'，
ZHANG Dong-hao',
MA Wen-jie’,NIE Hai-zhao'
(1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China; 2. Research Institute, Inner Mongolia No.1 Machinery (Group) Co. LTD, Baotou 014030, China)
Abstract: In connection of the hybrid features during its mode switching of a two-mode electro mechanical variable transmission (EVT), its switching process was studied based on switched system theory. Considering the flexible feature of the front drive coupling, an equivalent stiffness and damping model was established. A dynamic switching model of the system was built after analyzing the relationship of diferent components in the mechanism. The control strategy based on rules was fomulated and the switching rule based on events was designed. A simulation model of the system was developed in MATLAB/Simulink, The results showed that the established dynamical model was feasible, the designed switching rule was reasonable, and the driving torque changed smoothly during mode switching.
Key words: Vehicle Engineering; Electro-mechanical Variable Transmission; Mode Switching; Switched
System; Switching Rule
节能、环保与安全是当今汽车发展的三大主题，目前，以成熟技术为基础开发的油电混合动力汽车（Hybridelectricvehicle，HEV）由于具有降低燃油消耗和排放的优势，成为新能源汽车研究与开发的热点")，车辆机电复合传动（Electro-
mechanicaltransmission，EMT）是混联式混合动力的一种形式由电机、行星排和操纵机构组成的机电复合传动机构，一方面通过电力与机械两路功率流来传递动力，可以使发动机工作在最佳工作区，并利用机械传动的高效率，从而提高车辆的燃油经
收稿日期：20130829；网络出版时间：2014052614:45
基金项目：国家自然科学基金资助计划项目：多段机电复合传动换段过程失稳机理与稳定性控制研究（N0.51205020）
作者简介：马越（1977-），博士，副教授，研究方向为混合动力车辆技术、车辆动力学及其控制研究，万方数据