scholarly journals Automatic Spray Trajectory Optimization on Bézier Surface

Electronics ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 168 ◽  
Author(s):  
Wei Chen ◽  
Junjie Liu ◽  
Yang Tang ◽  
Huilin Ge

The trajectory optimization of automatic spraying robot is still a challenging problem, which is very important in the whole spraying work. Spray trajectory optimization consists of two parts: spray space path and end-effector moving speed. A large number of spraying experiments have proved that it is very important to find the best initial trajectory of spraying. This paper presents an automatic spray trajectory optimization that is based on the Bézier surface. Spray the workpiece for Bezier triangular surface modeling and find the best initial trajectory of the spraying robot, establish the appropriate spraying model, plan the appropriate space path, and finally plan the trajectory optimization along the specified painting path. The validity and practicability of the method presented in this paper are proved by an example. This method can also be extended to other applications.

2015 ◽  
Vol 2 (3) ◽  
pp. 129-136 ◽  
Author(s):  
Weidong Wu ◽  
Xunnian Yang

Abstract This paper proposes a novel method for shape design of a Bézier surface with given boundary curves. The surface is defined as the minimizer of an extended membrane functional or an extended thin plate functional under the guidance of a specified normal field together with an initial prescribed surface. For given boundary curves and the guiding normal field, the free coefficients of a Bézier surface are obtained by solving a linear system. Unlike previous PDE based surface modeling techniques which construct surfaces just from boundaries, our proposed method can be used to generate smooth and fair surfaces that even follow a specified normal field. Several interesting examples are given to demonstrate the applications of the proposed method in geometric modeling. Highlights Two extended energy functionals are proposed for variational surface modeling. The guiding normal field can be used to control the shapes of the variational surfaces efficiently. The proposed technique can be used for various modeling purposes like editing, hole filling or transition surface design.


2006 ◽  
Vol 23 (7) ◽  
pp. 612-615 ◽  
Author(s):  
Bert Jüttler ◽  
Margot Oberneder ◽  
Astrid Sinwel

2018 ◽  
Vol 3 (3) ◽  
pp. 1560-1567 ◽  
Author(s):  
Alexander W. Winkler ◽  
C. Dario Bellicoso ◽  
Marco Hutter ◽  
Jonas Buchli

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