Open AccessResearch on the Measurement of the Gravity Center for the Workpiece with Complex Curved Surface
Author(s) -
Xiaohui Yuan,
Chao Zhang,
Cheng Qian,
Shijie Su
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1635/1/012094
Subject(s) - center of gravity , coordinate system , point (geometry) , space (punctuation) , blade (archaeology) , surface (topology) , transformation (genetics) , matrix (chemical analysis) , transformation matrix , center (category theory) , mathematics , propeller , geometry , geodesy , physics , engineering , computer science , mechanical engineering , classical mechanics , kinematics , geology , materials science , chemistry , composite material , operating system , biochemistry , management , marine engineering , economics , gene , crystallography
Taking the 300 kg-class single blade of the controllable pitch propeller as the research object, based on the principle of three-point gravity measurement, a secondary weighing method is developed, which obtained the relative coordinate value of the gravity center by making a difference between the two weighing data. According to the concept that each axis is independent, an error model of spatial attitude is established. The attitude deviation is obtained by using sensor scanning, and the actual coordinate value of the blade gravity center is obtained by combining with the space attitude transformation matrix. The experimental results indicated that the secondary weighing method with the space attitude transformation matrix in this paper was useful and highly accurate. The method has certain guiding significance for the gravity center measurement for workpieces with large and complex curved surface.