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航空发动机电子控制器向更高性能和更高集成度的方向发展,使得传统测试方法难以满足需要.提出了通过边界扫描技术来解决电子控制器核心电路的测试问题.设计了边界扫描测试技术验证平台,主要包括边界扫描测试适配器和被测电路.对被测电路开展了基于边界扫描的测试试验,完成了主要指令的测试.同时通过扫描链实现了对被测电路的故障注入,通过这种方法注入故障可对航空发动机电子控制器的机内测试(BIT)能力进行验证.
Aeroengine electronic controller to the direction of higher performance and higher integration, making the traditional test method is difficult to meet the needs of the proposed boundary-scan technology to solve the test of the core circuit of the electronic controller.Design of the boundary-scan test technology verification Platform, including the boundary scan test adapter and the circuit under test. The test circuit based on the boundary scan test carried out to complete the main command test. At the same time through the scan chain to achieve fault injection of the circuit under test, through this The method injection failure verifies the in-aircraft test (BIT) capability of the aeroengine electronic controller.