公开(公告)号：US20230194249A1

公开(公告)日：2023-06-22

申请号：US18062958

申请日：2022-12-07

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Jian GAO ,  Guixin ZHANG ,  Lanyu ZHANG ,  Haixiang DENG ,  Yun CHEN ,  Yunbo HE ,  Xin CHEN

IPC: G01B11/25

CPC classification number: G01B11/254

Abstract: A three-dimensional measuring method and system for modulating three-dimensional codes at periodic edges are disclosed, the method includes: step A according to a number of phase levels and a composition rule of the three-dimensional codes, converting the number of phase levels into three-dimensional codes, modulating the three-dimensional codes to periodic edges; step B generating N pieces of modulated three-dimensional codes on periodic edges to form a sinusoidal fringe pattern, according to a N-step phase shift method; step C projecting N pieces of fringe patterns to a surface of an object, collecting the deformed N pieces of fringe patterns on the object surface; step D solving a wrapping phase and a mean intensity of N pieces of fringe patterns; step E since the mean intensities of the adjacent periodic edge codes are different, extracting edge coordinates from the mean intensities by using an edge extraction method.

公开(公告)号：US20240210915A1

公开(公告)日：2024-06-27

申请号：US18583904

申请日：2024-02-22

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Jian GAO ,  Guixin ZHANG ,  Yuheng LUO ,  Lanyu ZHANG ,  Haixiang DENG ,  Yun CHEN ,  Xin CHEN

IPC: G05B19/4103

CPC classification number: G05B19/4103 ,  G05B2219/34169

Abstract: A five-axis linkage synchronous tool path interpolation method and system, which utilizes the strict proportional coefficient relationship between points, control points and parameters on the first-order derivative curve of the spline curve, more accurate tool axis path curve interpolation points from the parameters of the tool tip path curve are calculated. There is no need to calculate the tool axis path curve interpolation points according to interval synchronization. It is not affected by the shape consistency of the tool tip path curve and the tool axis path curve.

公开(公告)号：US20230185262A1

公开(公告)日：2023-06-15

申请号：US17991936

申请日：2022-11-22

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Jian GAO ,  Guixin ZHANG ,  Lanyu ZHANG ,  Haixiang DENG ,  Yun CHEN ,  Yunbo HE ,  Xin CHEN

IPC: G05B19/04 ,  G06F17/16

CPC classification number: G05B19/041 ,  G06F17/16

Abstract: A time optimal speed planning method and system based on constraint classification. The method comprises: reading path information and carrying out curve fitting to obtain a path curve; sampling the path curve, and considering static constraint to obtain a static upper bound value of a speed curve; considering dynamic constraint, and combining the static upper bound value of the speed curve to construct a time optimal speed model; carrying out convex transformation on the time optimal speed model to obtain a convex model; and solving the convex model based on a quadratic sequence planning method to obtain a final speed curve. The system comprises: a path curve module, a static constraint module, a dynamic constraint module, a model transformation module and a solving module.