The Trajectory Optimization of Spray Gun for Spraying Painting Robot Based on Surface Curvature Properties

Based on the surface curvature feature, the identification scheme is put forward for curvature of the free-form surface and the complex free surface, which is divided into large curvature and small curvature surface, and the graphic example is given to illustrate scheme effectiveness; Aimed at the trajectory optimization problem of spray gun of spraying-robot on complex free surface, the spray gun trajectory optimization model of different curvature surface is put forward to complete the trajectory optimization on the free surface. Combined with the least square approximation and topology element meshing techniques, the trajectory optimization problem of the intersecting area of two patches of different curvature will be turned into the trajectory optimization problem of the intersecting area of a similar natural quadric patch and an approximate plane patch. Then the trajectory optimization evaluation function model is set up, which verifies the proposed scheme effectiveness by simulation results.