对仪器设备不仅要求它们能很好地实现其功能,而且还希望在发生故障后,能够识别出来,以便采取措施,使其继续正常工作。在模拟电路中,故障识别的方法,首先是进行纯直观的分析研究,然后在积累大量实践经验基础上,不断加以完善。用于识别故障的检测信号多是单纯由工程技术人员根据工程上的考虑来确定,而不是根据某规则(或公式)进行计算。 Not only do they require that they perform their function well, but they also want to be able to recognize it after a failure so that it can take steps to keep it working. In the analog circuit, fault identification method, first of all, pure and intuitive analysis and research, and then accumulated a large number of practical experience, based on continuous improvement. The detection signals used to identify faults are mostly determined by engineering technicians based on engineering considerations rather than calculated according to some rule (or formula).