基于虚拟仪器的VCU自动测试系统设计

Design of Automatic Test System for Vehicle Control Unit based on Virtual Instrument

摘要:

在纯电动汽车开发过程中,整车控制器的软件与硬件会频繁更新,为了快速匹配样件、提高测试效率、提升测试吞吐量,设计了通用自动化测试系统。该系统使用TestStand作为测试执行模块。在LabVIEW中开发了一套即时可用的测试动作库和驱动程序,动作库执行测试动作,通过TestStand引擎与驱动程序进行数据交互。设计了测试项目管理软件,覆盖VCU测试全过程并保证可追溯性。实际测试应用表明,该系统可以快速配置测试环境、生成可执行测试序列,能够高效地定位控制器缺陷,且运行稳定、通用性好。

Abstract:

The software and hardware of vehicle control unit will be updated frequently in the electric vehicle development process. In order to realize quick matching and meet the demand for higher efficiency and test throughput for VCU, designed a general automatic test system. The system consists of a ready-to-use test action library and device driver developed in LabVIEW, and uses TestSand as test execution module. The test action library executes test activities and exchanges data with device driver through TestStand engine. Developed a test project management software that covers the whole VCU test process and ensures traceability. The results of practical test application verify that the system can match the unit under test rapidly, implement executable test sequences and spot defects efficiently with good stability and generality.