光学学报, 2019, 39 (8): 0812003, 网络出版: 2019-08-07
高速旋转物体频闪在线相位测量轮廓术 下载: 999次
Stroboscopic Online Phase Measurement Profilometry for High-Speed Rotating Objects
测量 频闪在线相位测量轮廓术 圆形正弦光栅 同步单元 高速旋转物体 measurement stroboscopic online phase measurement profilometry circular sinusoidal grating synchronization unit high-speed rotating object
摘要
为了实现高速旋转工件的在线三维面形检测,提出一种高速旋转物体频闪在线相位测量轮廓术(PMP)三维测量方法。利用圆形正弦光栅替代线形正弦光栅,采用高密度二元编码光栅替代灰度编码光栅,设计专用频闪同步控制单元同时触发投影系统频闪投射相移光栅和图像采集单元同步获取图像,获得物体在同一“冻结”位置下的相移变形条纹后,采用静态PMP相移算法重建物体的三维面形信息。实验结果表明,该方法具备可行性和实用性,可有效避免工件离线检测时多次装夹不一致引入的加工误差,能够提高工件的检测效率和加工效率,可用于其他高速旋转物体的三维面形重建。
Abstract
A stroboscopic online phase measurement profilometry (PMP) for high-speed rotating objects is proposed in this paper. In order to realize the online three-dimensional surface shape detection of a high-speed rotating workpiece, the traditional linear sinusoidal and traditional gray-coded gratings are replaced by circular sinusoidal and high-density binary-coded gratings, respectively. Further, the special stroboscopic synchronization control unit is designed to simultaneously trigger the projection system to project the phase shift grating and image acquisition unit to obtain the image synchronously, thereby obtaining the phase shift deformation stripes of the object at the same “frozen” position. Therefore, the static PMP phase shift algorithm can be used to reconstruct the three-dimensional surface shape information of the object. The experimental results demonstrate the feasibility and practicability of the proposed method. This method can effectively prevent the machining error caused by multiple clamping inconsistencies when the workpiece is detected offline, improve the workpiece detection and machining efficiencies, and be used to reconstruct the three-dimensional surface shape of other high-speed rotating objects.
种晴, 曹益平, 陈雨婷. 高速旋转物体频闪在线相位测量轮廓术[J]. 光学学报, 2019, 39(8): 0812003. Qing Chong, 曹益平, Yuting Chen. Stroboscopic Online Phase Measurement Profilometry for High-Speed Rotating Objects[J]. Acta Optica Sinica, 2019, 39(8): 0812003.