Two-dimensional locating method of motion platform based on magnetic steel array
US9455650B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2011 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Dec 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.