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摘要: 铁谱分析在航空发动机运行状态监控和故障诊断中有着极其重要的实际应用价值, 准确获取铁谱磨粒的几何参数是进行有效分析的关键。但到目前为止, 铁谱磨粒的三维尺寸特别是厚度的测量仍然没有一套经济有效的方法, 据此对基于立体视觉的磨粒显微测量方法做了长期的研究, 并提出相应的软硬件系统和实现方法, 初步解决了磨粒的三维测量问题。该方法根据双目立体视觉的深度感知机理, 利用光学显微镜模拟体视模式进行光学成像, 并辅助相应的匹配方法和计算方法来处理像对, 获取微粒的厚度尺寸, 并根据高度分布重建磨粒的表面形态。该方法达到了较好的实验效果, 数据和模型结果均实现预期目标Abstract: The ferro-graphy has great value in the aero-engine operation inspection and the fault diagnosis technology. It is the most important step for the ferro-graphy to get the geometrical sizes of wear debris accurately. But up to now, there isn't a suit of efficient method to get the 3D size of wear debris, especially the thickness. Based on analysis and experiment on stereo vision applied in debris measurement, the whole system, including the hardware, software and arithmetic, was presented to solve the problem of debris measurement primarily. Based on the mechanism of stereo vision apperceiving the depth, optical microscope is applied to simulate the stereo mode to image, and add to the matching method and computing method to processing the image pairs. The system gets the thickness of debris, and the feature of wear debris surface is reconstructed based on the altitude distributing. The method has a better effect, and the results of data or model reach the prospective aim.
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Key words:
- stereo vision /
- wear debris /
- microscopical measuring /
- 3D size /
- fault diagnosis
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