电磁兼容风险评估技术在飞机某系统伺服控制器设计的应用
Application of Electromagnetic Compatibility Risk Assessment Technology in the Design of Servo Controller of an Aircraft System

飞机某系统伺服控制器电机驱动电路产生的电磁骚扰起始频率低，功率大。产品设计过程中，常常仅依靠设计电源滤波器通过GJB151B-2013标准CE102电源线传导发射测试项，电源滤波器体积、重量较大。而飞机对机载设备轻量化的要求日益严格，飞机减重后，同样的动力基础下，油耗更低、运力更高、飞行距离更远，还能带来一系列的绿色经济效益。飞机减重意义重大，要“为减轻每一克重量而奋斗”。本文在伺服控制器设计阶段，应用电磁兼容风险评估技术，确定伺服控制器CE102测试项的关键风险要素，识别伺服控制器的电磁兼容设计风险，制定伺服控制器的电磁兼容设计方案，而不是仅依靠设计电源滤波器通过CE102测试项。结果表明设计效果显著，CE102测试项一次性通过试验，满足GJB151B-2013标准要求，滤波器体积减小42%，重量减轻约40%。
The electromagnetic interference generated by the servo controller motor drive circuit of a aircraft system, the frequency is low and the power is high. In the process of product design, it is often only relied on to design the power filter to pass the GJB151B-2013 standard CE102 power line conducted emission test items, and the power filter is large in size and weight. After the aircraft is reduced, under the same power base, the fuel consumption is lower, the capacity is higher, the flight distance is longer, and it can also bring a series of green economic benefits. Aircraft weight reduction is significant, and it is necessary to “fight for every gram of weight”. In this paper, in the design stage of servo controller, the EMC risk assessment technology is applied to determine the key risk elements of the CE102 test item of the servo controller, identify the EMC design risk of the servo controller, and formulate the EMC design scheme of the servo controller, instead of relying only on the design of the power filter to pass the CE102 test item. The results show that the design effect is remarkable, and the CE102 test item passes the test at one time, meeting the requirements of the GJB151B-2013 standard, and the filter volume is reduced by 40% and the weight is reduced by about 42%.