根据某型号直升机定型试飞的需要,研制出了动态测量旋翼桨叶气动力学参数的光电测试系统。其中运动参数(挥舞角、摆振角和变距角)由二维位置敏感传感器响应桨叶表贴发光点的位置变化测得,挥舞应变由光纤光栅传感器测得。利用自主搭建的桨叶运动姿态仿真平台开展了相关测试实验。结果表明:各角度值与对应输出电压间有很好的线性关系,测量范围内的角度测量误差小于1%;光纤光栅与电阻应变片对比测试的一致性较好,线性相关系数达到了0.999;光纤光栅应变测量的复现性很好,两次应变测量的相对偏差仅为1.22%。系统具有较高的测试精度。 According to the need of a model helicopter test flight, a photoelectric test system for dynamically measuring the aerodynamic parameters of rotor blades has been developed. The movement parameters (swing angle, roll angle and pitch angle) are measured by the position sensor of the two-dimensional position sensor in response to the change of the position of the light emitting point of the blade surface. The waving strain is measured by a fiber grating sensor. Relevant test experiments are carried out by using self-propelled blade motion posture simulation platform. The results show that there is a good linear relationship between the angle values ​​and the corresponding output voltage, the angle measurement error is less than 1% in the measurement range. The consistency between the FBG and the strain gage is better and the linear correlation coefficient is 0.999. The reproducibility of fiber grating strain measurement is good, the relative deviation of the two strain measurements is only 1.22%. System has a high test accuracy.