The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2024
Filed:
Dec. 14, 2020
Chongqing University, Chongqing, CN;
Shanghai University, Shanghai, CN;
Huayan Pu, Shanghai, CN;
Jinglei Zhao, Shanghai, CN;
Jun Luo, Shanghai, CN;
Jiyun Zhao, Shanghai, CN;
Qinghua Kong, Shanghai, CN;
Jiheng Ding, Shanghai, CN;
Min Wang, Shanghai, CN;
Yi Sun, Shanghai, CN;
Zong Li, Shanghai, CN;
Long Bai, Shanghai, CN;
Yan Peng, Shanghai, CN;
Shaorong Xie, Shanghai, CN;
Chongqing University, Chongqing, CN;
Shanghai University, Shanghai, CN;
Abstract
The present invention discloses a quasi-zero-stiffness (QZS) based six-degree-of-freedom (6-DOF) absolute displacement and attitude measurement device. A lower end coil and an upper end coil are respectively charged with currents in the opposite directions; The electromagnetic field and the magnetic fields of an upper magnet and a lower magnet per se are mutually acted to produce an electromagnetic stiffness opposite to the stiffness of a spring. The stiffness of the whole leg is close to zero stiffness. When the to-be-measured platform generates space motion, the reference platform is in the stationary state. At this point, the deformation amounts of the six legs can be measured by laser displacement sensors. The six deformation amounts are respectively inputted into the displacement and attitude resolver, and by forward kinematic solution of the 6-DOF device, the displacement and the attitude of the to-be-measured platform can be obtained.