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计算机辅助测试（CAT）可以提高液压元件的测试精度、测试速度和测试的重复性．文章介绍了一种用计算机辅助测试方法对电磁换向阀的失效进行判断的方法，介绍了测试系统的硬件及其软件的开发，并指出了该测试系统的特点．
Computer-aided testing (CAT) can improve the hydraulic components of the test accuracy, test speed and test repeatability. This paper introduces a method to judge the failure of electromagnetic reversing valve by computer aided test, introduces the development of the hardware and software of the test system, and points out the characteristics of the test system.