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0 引言汽车上使用电子装置越来越广泛。其可靠性与所受的干扰情况及本身的抗干扰能力是有很大关系的。了解车上电磁干扰情况对设计高可靠性的电控装置是非常重要的。最易受干扰的是电控装置的前向通道。尤其是通向传感器的和长引线更易受干扰。一般这些通道频带都不很宽。为此我们测取干扰信号的装置的频带限于10kHz以下。
0 Introduction The use of electronic devices on the car is becoming more widespread. Its reliability and suffered interference and its anti-interference ability is a great relationship. Understanding the car’s electromagnetic interference is important to designing a highly reliable electronic control unit. The most disturbing is the forward channel of the electronic control unit. In particular, the lead to the sensor and the long leads are more susceptible to interference. Generally these channels are not very wide band. For this purpose, the frequency band of the device in which we measure the interference signal is limited to below 10 kHz.