摘要: |
针对传统接触式测量手段存在的挤压误差、效率低等问题,提出基于外差式多频相移技术的非接触式三维光学形貌测量方法。在论述三维光学形貌测量原理的基础上,分析并设计了三维光学形貌测量方法的功能、工作过程和主要模块,阐述了外差式多频相移光学测量、海量密集点云的优化处理、大尺寸零件全方位精确测量等关键技术。通过该方法能够快速、准确建立固体火箭发动机喷管等零部件的三维数字化模型,为固体火箭发动机的检测及创新设计提供更丰富的基础数据。 |
关键词: 固体火箭发动机喷管;三维光学;形貌测量;数字化 |
基金项目: |
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A Method for Measuring the Full-field Morphology of Solid Rocket Motor Nozzle Based on Three-dimensional Optical Measurement Technology |
Fan Boxuan1, Chen Guiming1, Lin Hongtao2, Li Hui3
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1. Rocket Force University of Engineering;2. Unit 31004 of the People's Liberation Army;3. The First Military Representative Office of the Rocket Force in Xi?an
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Abstract: |
To overcome the problems of extrusion error and low efficiency of traditional contact measurement methods, a non-contact three-dimensional optical morphology measurement method based on heterodyne multi-frequency phase shift technique is proposed. On the basis of discussing the principle of three-dimensional optical topography measurement, this paper analyzes and designs the function, working process and main modules of three-dimensional optical topography measurement method, and expounds the key technologies of heterodyne multi-frequency phase-shift optical measurement, optimization treatment of massive dense point cloud, and all-round accurate measurement of large-size parts. It can quickly and accurately establish the three-dimensional digital model of solid rocket engine nozzle and other parts, and provide more abundant basic data for the detection and innovative design of solid rocket engine. |
Key words: solid rocket engine nozzle;three-dimensional optics;morphological measurement;digital |