机械式变速器温升性能试验台架研究

摘要

To test the temperature-rise performance of mechanical transmission,a common DC bus energy feedback e-lectric enclosed temperature-rise test bed is designed and developed. The paper introduces the working principles of the test bed and selection of key hardware of the test bed. The measuring control software is programmed for the upper computer in VS2005. To support the upper computer software,PLC S7-300,S120 and CP1613 network card communication frames are constructed. The NI PXI-6221 Data Acquisition Card is used to collect and transmit data. The test result is employed to an-alyze the relationship between the speed,time,and transmission temperature. The test result shows that the test bed is in stable operation. The test result is accurate,with excellent expansibility.%为了测试某机械式变速器的温升性能，设计开发了共直流母线能量回馈电封闭式温升试验台架。介绍了试验台架工作原理，对台架的重要硬件进行选型，采用VS2005编写上位机的测控软件。为配合上位机软件搭建了PLC S7－300、S120和CP1613的网卡通信架构，选用NI PXI－6221数据采集卡采集和传递数据。利用试验结果分析了转速、时间和变速器温度的关系。试验结果表明，该台架运转稳定，测试结果较为准确，具有良好的扩展性。