In order to solve the technical problem of three-dimensional profile measurement of aero-engine blades with high speed rotation, an optical dynamic measurement system for aero-engine blades was developed. Firstly, the system is calibrated by the algorithm of spatial truncation phase calibration to establish the index between truncation phase and spatial coordinates. During the measurement, the deformation map of the rotating measured blade is obtained by synchronous projection and snapshot. By using the fast Fourier algorithm, the truncation phase is obtained, and then the profile information of blade can be obtained through the truncation phase and spatial coordinate index. Through the design and construction of the blade simulation platform and dynamic measurement experiment system, the three-dimensional profile data of the blade at different rotating speeds are obtained, compared and analyzed, and then the overall profile deformation law is discovered, which verifies the effectiveness and feasibility of the algorithm. The system can obtain the dynamic profile information of the whole blade completely, and provide innovative technical means for blade design verification and performance analysis.

中文翻译：

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航空发动机叶片轮廓动态变形三维测量系统

为解决航空发动机叶片高速旋转三维轮廓测量的技术难题，研制了航空发动机叶片光学动态测量系统。首先，利用空间截断相位标定算法对系统进行标定，建立截断相位与空间坐标之间的索引。在测量过程中，通过同步投影和快照获得旋转被测叶片的变形图。利用快速傅里叶算法得到截断相位，再通过截断相位和空间坐标索引得到叶片轮廓信息。通过叶片仿真平台和动态测量实验系统的设计与搭建，获取叶片在不同转速下的三维轮廓数据，进行对比分析，发现整体轮廓变形规律，验证了算法的有效性和可行性。该系统可以完整获取整个叶片的动态剖面信息，为叶片设计验证和性能分析提供创新的技术手段。