空空导弹投放信号中断故障容错设计与PHM实现

载机送出投放信号启动空空导弹弹射过程,当该过程尚未结束而投放信号中断或瞬断时,则会产生机-弹分离安全性问题.为了防止该问题的发生,在弹射控制电路的基础上,采用高能复合钽电解电容储存电能的方法实现投放信号中断故障容错.在电容充电过程中,通过在线测试充电电压得到实际电容充电曲线,比较该曲线和标准曲线的均方误差进行故障预测和健康管理.试验表明了故障容错设计和故障预测的可行性和有效性.

Fault-Tolerance Design and PHM Implementation of Air-to-Air Missile Ejection

Delivery signal sent by aircraft is the startup signal of the air-to-air missile ejection procedure.The carrier and missile separation problem will occur during the ejection signal interruption or instant break.In order to solve the problem,a fault-tolerance method for using high-energy tantalum electrolytic capacitor to store electric energy is proposed based on ejection signal control circuit.In the process of capacitor charging,actual capacitor charging curve is obtained by online voltage test.Prognostics and health management (PHM) of the capacitor charging circuit is implemented by comparing mean square error of the curve with that of standard charging curve.Experimental results indicate that fault-tolerance design and PHM implementation of air-to-air missile ejection are feasible and effective.