基于阶比跟踪的发动机过渡态振动数据分析方法

基于离散傅里叶变换(DFT)理论的传统谱分析方法无法满足发动机过渡态振动测定试验数据分析的需求。针对这一问题,结合发动机飞行试验的工程特点,建立了发动机过渡态试验转子振动信号的阶比跟踪分析方法,并利用该方法对某发动机试飞数据进行了分析,取得了良好的效果,证实了所建立方法的有效性。

Analysis Method of Vibration Signal in Engine Transition-state Based on Order Tracking

The typical spectrum analysis based on DFT cannot meet the data analysis of the vibration measurement test in transition-state of the engine. Aim to slove this problem,the order tracking analysis method is proposed in the paper combined with project characteristics of engine flight test. By this method, the real data of some type engine in flight test is analyzed to show that the method is effective.