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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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超塑性自由胀形的双目立体视觉测量研究*
, PP. 471-478
Keywords: 超塑性,自由胀形,双目立体视觉,测量
Abstract:
超塑性自由胀形实验中准确测量胀形件轮廓曲面以及曲面上各点的变形是建立超塑性自由胀形解析理论的重要基础.本工作依据自由胀形件轮廓为轴对称旋转曲面这一重要特征,将曲面测量问题转化为曲面上特征点的测量,采用双目立体视觉系统测量特征点的三维坐标,并进行曲线拟合以确定其轮廓曲面,计算几何参数,通过分析轮廓曲面上特征点位置变化以及两相邻特征点之间间距的变化来测量应变.介绍了双目立体视觉系统的组成和测量方法,以及系统模型、标定方法、消除高温影响和图像处理等关键环节,给出了胀形件几何参数和变形测量的方法,进行了测量实验.
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