Firstly the electric - drive equipment ' s electrical system is changed into data circuit . then the testing code is gained by the boolean difference method . finally the number of the sampling is reduced 通过将电传动电路转化为数字电路，并利用数字电路故障诊断方法进行处理，大大地减少了教学系统的采样点数目，为在线故障定位系统的研制做了理论上的准备。
