典型汽车电器电磁干扰及其对抗措施研究

Analysis on Electromagnetic Disturbance and its Countermeasures of Typical Automobile Electrical Appliance

随着汽车电子技术的迅猛发展,汽车电磁环境越来越复杂。汽车电器零部件在此环境下不仅要能够可靠工作,而且要保证不对周围电器造成明显的影响。以国家强制检验的典型汽车电器——汽车闪光器为例,深入分析了汽车电器的电磁干扰机制,并且通过采用几种实用的电磁干扰对抗性措施,最终通过了相关的国际电磁兼容标准,对汽车电器的电磁兼容设计有较高的参考价值。

With the rapid development of automobile electronics, the electromagnetic environment of automobile is becoming more and more serious. In order to meet the demand of electromagnetic compatibility （ EMC）, the automobile electrical appliances should work reliably under the electromagnetic environment and mustn＇t emit too much electromagnetic disturbance to influence the electrical appliances also. Take the automobile flasher, one of the national must-be-verified electrical appliances for example in this paper. The principle of electromagnetic disturbance of electrical appliances is studied. With the comprehensive countermeasures, the automobile flasher product complies with the international EMC standards. There＇s much reference value to other automobile electrical appliances in EMC design.