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:
Sep. 27, 2016
Filed:
Jan. 18, 2011
Jinchun HU, Beijing, CN;
Yu Zhu, Beijing, CN;
Jinsong Wang, Beijing, CN;
Ming Zhang, Beijing, CN;
Kai Liao, Beijing, CN;
Kaiming Yang, Beijing, CN;
Dengfeng Xu, Beijing, CN;
Wensheng Yin, Beijing, CN;
Guanghong Duan, Beijing, CN;
Jinchun Hu, Beijing, CN;
Yu Zhu, Beijing, CN;
Jinsong Wang, Beijing, CN;
Ming Zhang, Beijing, CN;
Kai Liao, Beijing, CN;
Kaiming Yang, Beijing, CN;
Dengfeng Xu, Beijing, CN;
Wensheng Yin, Beijing, CN;
Guanghong Duan, Beijing, CN;
TSINGHUA UNIVERSITY, Beijing, CN;
Abstract
A two-dimensional locating method of a motion platform based on a magnetic steel array involves the following steps: placing more than four linear Hall sensors at any different positions within one or more polar distances of the magnetic steel array on the surface of the motion platform in a motion system; determining a magnetic flux density distribution model according to the magnetic steel array; determining the mounting positions of the above-mentioned linear Hall sensors, which are converted into phases with respect to the mass center of the motion platform; recording the magnetic flux density measured values of the linear Hall sensors as the motion proceeds; solving the phases of the mass center of the motion platform in a plane, with the measured values being served as observed quantities and the magnetic flux density distribution model being served as a computation model; and determining the position of the mass center of the motion platform with respect to an initial phase according to the phase, so as to realize the planar location of the motion platform. The present invention provides a simple, fast and robust method for computing mass center positions for a motion system containing a magnetic steel array.