激光与光电子学进展, 2020, 57 (19): 191204, 网络出版: 2020-09-27
航空发动机叶片HSI模型三维快速测量方法 下载: 1030次
HSI Model-Based Three-Dimensional Rapid Measurement Method for Aero-Engine Blades
测量 航空发动机叶片 光学三维测量 HSI模型 相位解包裹 条纹级次识别 measurement aero-engine blades optical three-dimensional measurement HSI model phase unwrapping fringe order identification
摘要
针对航空发动机叶片的高精度和高效率测量需求,提出一种基于HSI(Hue、Saturation、Intensity)色彩模型的快速三维测量方法。首先分析HSI模型并设计结构光三维测量系统,使用基于LUT(Look Up Table)的色彩校正方法对色彩串扰进行校正,之后对色相与深度的映射关系进行标定。在此基础上,提出仅用一幅彩色图样获取包裹色相。在非连续表面上使用彩色编码色条图像实现条纹级次的识别,进而完成色相解包裹,并通过仿真模拟验证所提方法的可行性。最后对航空发动机高压压气机转子叶片进行三维测量,并将所提方法与常用的包裹相位获取方法和解包裹方法的计算效率进行对比。实验结果表明,所提方法满足航空发动机叶片的测量要求并可以提高测量效率。
Abstract
To satisfy the high-precision and high-efficiency measurement requirements of aero-engine blades, a fast three-dimensional measurement method based on the HSI (hue, saturation, intensity) color model is proposed herein. First, the HSI model is analyzed to design a structured light-based three-dimensional measurement system, and a look-up table (LUT) based color correction method is employed to correct the color crosstalk and calibrate the mapping relationship between hue and depth. The proposed approach uses only one color pattern to obtain the hue of a package. A color-coded color bar image is used on the discontinuous surface to recognize the fringe level and then complete the hue unwrapping. The feasibility of the proposed method is verified by simulation. Finally, the three-dimensional measurement of the rotor blades of a high-pressure aero-engine compressor is performed, and the efficiency of the proposed method is compared with that of the conventional method of obtaining the wrapped phase and unwrapping. Experimental results show that the proposed method satisfies the measurement requirements of aero-engine blades and can improve measurement efficiency.
马龙, 钱瑞婕, 刘宇哲, 徐泓悦, 裴昕, 孙凤鸣. 航空发动机叶片HSI模型三维快速测量方法[J]. 激光与光电子学进展, 2020, 57(19): 191204. Long Ma, Ruijie Qian, Yuzhe Liu, Hongyue Xu, Xin Pei, Fengming Sun. HSI Model-Based Three-Dimensional Rapid Measurement Method for Aero-Engine Blades[J]. Laser & Optoelectronics Progress, 2020, 57(19): 191204.