设计了汽车动力总成试验台架:采用2台负载电动机安装在差速器两端模拟行驶阻力,1台驱动电动机模拟内燃机驱动动力传动系.应用LabVIEW软件开发台架测控软件,对动力传动系主控制器CAN信息和基于MODBUS和USS协议的台架电气传动系统串口信号进行实时同步采集与监控.系统集多种通讯协议于统一平台,具有良好的可移植性和可扩展性.将试验台架应用于ISG型混合动力总成系统可靠性试验和电磁耦合动力合成箱关键部件性能测试以及工况模拟试验,可为其控制策略制定、参数优化提供有价值的参考.%Vehicular powertrain testbench was designed by utilizing two load motors installed at both ends of the differential which simulated the driving resistance, and one drive motor which drove the powertrain system instead of I. C. engine. A LabVIEW based measurement and control system for the testbench were developed. CAN signals of powertrain' s master controllers, serial signals of electric driven system based on USS and MODBUS protocol were sampled and monitored at real-time and synchronously. The system integrated various communication protocols in one platform and had a good portability and scalability. This testbench was used in applications of reliability test for hybrid powertrain system with ISG (integrated starter/generator). The basic performances of key components of electromagnetic coupling power synthesis box, and the dynamic performance on simulated working condition were also tested so as to provide a valuable reference for control strategy formulation and parameter optimization.
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