Position detector for moving magnet type linear motor
US8742702B2 · kind B2 · utility
0Cited by
2References
12Claims
0Family size
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Key dates
| Filing date | Dec 25, 2009 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Jan 7, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K29/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a moving magnet type linear motor including a stator with a plurality of coils placed in one direction and a mover with a permanent magnet opposed to the stator, a position detector detects the position of the mover. The position detector includes a magnetic body fixed to the mover. One or two or more coils are selected and a voltage is applied to the selected coil while a current or a voltage induced in a coil adjacent to the selected coil is measured, and the position of the magnetic body that changes in response to the position of the mover is determined based on the measured current or the measured voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.