航空发动机数控系统中LVDT传感器信号处理及在线故障检测

Signal processing and on-line failure monitoring of LVDT sensor on aero-engine control system

通过对线位移差动变压器(LVDT)信号处理电路的深刻研究,给出了芯片发热、温漂、信号精度等问题的一般解决方法,提出了一种通过软、硬件结合,在不增加外围器件的情况下对LVDT传感器进行在线故障检测的定值判断法.发动机台架试验结果表明,所提出的方法是行之有效的.

After in-depth study of LVDT signal processing circuit, a basic problems, such as： chip fever, temperature drift and signal accuracy, were Meanwhile, an on-line monitoring method combining software and hardware w posed without addition of external components. The result of engine bench proves the feasibility of this method. solution for presented. as also proexperiment proves the feasibility of this method.