航空科学技术2025，Vol.36Issue(7)：26-33,8.DOI:10.19452/j.issn1007-5453.2025.07.004
面向航空发动机叶片型面检测的双光梳三维成像技术研究
Research on Dual-Comb-Based Three-Dimensional Imaging System Aiming for Aero-Engine Blades Surface Measurement
摘要
Abstract
High-precision,high-efficiency,low-cost,and real-time surface measuring of aero-engine blades provides a guarantee for prolonging the lifetime of the engine and protecting the life and property safety of the passengers.Aiming for that,this paper demonstrates a dual-comb-based three-dimensional(3D)imaging system which combines the advantages of dual-comb ranging and high-speed two-dimensional scanning mirrors.In the 3D imaging system,the two independent optical combs were replaced by an integrated single-cavity dual-wavelength laser and a high-bandwidth phase-locking loop was used to stabilize the frequency of the repetition rate difference signal(Δfr).As a result,the frequency deviation of Δfr signal was reduced from 0.8 Hz to an unprecedented 720 μHz,which achieved three orders of magnitude lower.With the use of high-speed two-dimensional scanning mirrors,the system can complete a 40 mm×40 mm 3D image in seconds with a static measurement error of 2 μm(1 s measurement time).The dual-comb-based 3D imaging system developed in this paper is advantageous with large measurement range,high precision,fast data update,and low cost and is expected to provide a new technological approach for high-precision,real-time surface measuring of aero-engine blades or any other key components.关键词
航空发动机叶片/型面检测/光学频率梳/双光梳测距/单腔双梳Key words
aero-engine blades/surface measurement/optical frequency comb/dual-comb ranging/single-cavity dual-comb分类
信息技术与安全科学引用本文复制引用
李思萱,刘婷婷,陈彩欣,闫明..面向航空发动机叶片型面检测的双光梳三维成像技术研究[J].航空科学技术,2025,36(7):26-33,8.基金项目
航空科学基金(202200220X8001)Aeronautical Science Foundation of China(202200220X8001) （202200220X8001）
