基于相关函数的航空发动机自整角机信号测试

Signal measuring of automatic adjust-angle transformer in certain aeroengine based on correlative function theory

根据某型发动机自整角机传感器的工作原理,提出了一种新型的基于相关函数法测量该传感器信号的方法。实验和仿真结果表明:该测量法对信号中的随机干扰噪声有极强的抑制能力;对比传统的硬件测量法,该法克服了相位移动明显、响应速度慢等缺点,误差减小为硬件测量法误差的5. 24%,收到了良好的控制效果。

According to the principle of automatic adjust-angle transformer in a certain aeroengine,a new measuring method in the sensors’ signal based on correlative function theory is proposed.The results of experiment and simulation demonstrate that the method can restrain strongly random interfering noise in available signal.Comparing with traditional hardware measuring method,the proposed method shows many other advantages,such as decreasing phase angle measuring error,eliminating random noise and improving response speed.The measuring error is hardware measuring error’ s 5.24 percent.As a result,the good control result is achieved.