针对模拟电路的测点选择问题,根据测点的必要程度,提出了“测点必要度”的概念,同时结合“故障隔离度”的概念,建立了新的测点优选方法,给出了新算法的详细计算过程和应用实例.实验分析结果表明,新算法的计算效果优于熵算法和基于故障隔离度的测点选择算法,可用于复杂模拟电路的测点选择. According to the necessary degree of measuring point, the concept of “measuring point necessity” is put forward for the selection of measuring point of analog circuit. At the same time, a new measuring point selecting method is established based on the concept of “fault isolation degree” The detailed calculation process and application examples of the new algorithm are given.The experimental results show that the new algorithm is better than the entropy algorithm and the fault point selection algorithm based on fault isolation, which can be used for the selection of measuring points in complex analog circuits.