汽车电控单元测试用例生成与集成测试技术

Study on test case generation and integration testing method for vehicle electronic control unit

摘要:

针对汽车电控单元的测试需求，通过引入参数相关性和组合约束条件，基于IPO（in-parameter-order）策略提出了一种改进的测试用例生成算法；设计并构建了汽车电控单元集成测试系统，并在集成测试系统的架构下实现了对汽车电子常用测试设备的统一管理和数据共享；最后，通过两种不同汽车电控单元的典型测试工况对提出的改进的测试用例自动生成算法进行了实验验证.结果表明，所提出的测试用例生成算法可在满足覆盖准则的前提下有效缩减测试用例数量，结合本设计的集成测试系统，能够满足不同汽车电控单元的测试需求，提高测试效率和精度.

Abstract:

To test the vehicle electronic control units, an improved test case generation algorithm based on the IPO (In-Parameter-Order) strategy is proposed via the parameter correlation and combination constraints of the vehicle. An integration testing system for vehicle electronic control units is developed, in which a unified management and data sharing mechanism is enabled for the common equipments used in vehicle test. The proposed method is validated under two different kinds of vehicle electronic control units and test conditions. The results show that the proposed test case generation algorithm can achieve the same coverage with a clear reduced number of test cases. And the integrated test system can meet the test requirements of the different vehicle electronic control units, with an improved testing efficiency and accuracy.