杨明发, 刘放, 黄文建, et al. Inverse Kinematic Analysis of Redundant Manipulator Under Spinor Theory and Vector Constraints[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(9): 1507-1513.
杨明发, 刘放, 黄文建, et al. Inverse Kinematic Analysis of Redundant Manipulator Under Spinor Theory and Vector Constraints[J]. Mechanical Science and Technology for Aerospace Engineering, 2025, 44(9): 1507-1513. DOI: 10.13433/j.cnki.1003-8728.20230330.
Aiming at the inverse kinematics solution of a 7-degree-of-freedom redundant manipulator
an inverse kinematics algorithm combining spinor theory and vector constraint is proposed based on biased elbow joint configuration and translational characteristics of redundant manipulator. Considering the characteristics of the elbow offset and translational structure of the manipulator
a kinematic model is established based on spinor theory
and the first joint variable is used as the independent variable to solve other joint variables. The Paden-Kahan subproblem is used to establish the relationship between the first three joint variables
and the determination equation of the spatial vector coplanar between the joint axes is established as a constraint condition
and the first three joint variables are solved synchronously. Other joint variables are further solved by Paden-Kahan subproblems and vector relations. The feasibility and accuracy of the proposed method are verified by numerical examples.