机载计算机电源接地研究与设计

Research and design of airborne computer power grounding

文章对机载电源的3种接地方式进行了系统分析,阐述了机载电源中干扰与噪声产生的机理以及对应的消除方法。高频开关电源在开关的瞬间会产生尖冲电压与尖冲电流,对于计算机硬件设备的正常工作会产生不利的影响,甚至会影响到产品的工作寿命。结论表明,通过对电源接地的优化设计,可以实现在不增加额外成本的情况下实现机载计算机电源的可靠稳定工作,避免在工作过程中产生的各种干扰。

This paper systematically analyzes the three grounding modes of airborne power supply,and expounds the mechanism of interference and noise generation in airborne power supply and the corresponding elimination methods.The high frequency switching power supply will produce sharp impulse voltage and current at the moment of switch,which will have a negative effect on the normal work of computer hardware equipment,and even affect the working life of the product.The conclusion shows that through the optimal design of power grounding,the reliable and stable operation of airborne computer power supply can be realized without adding additional cost,and all kinds of interference can be avoided in the working process.