Motor and driving device using same
US11404987B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2020 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Dec 4, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/064
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present application discloses a linear motor having a housing with an accommodation space, stoppers fixed on the housing and set at intervals, a vibrator sliding between the stoppers and a power coil driving the vibrator to reciprocate motion. The stopper includes a first iron core fixed on the housing and an auxiliary coil twinned on the first iron core. The motor also includes a positioning sensor used to sense the motion of the vibrator to obtain a feedback signal. According to the feedback signal detected by the positioning sensor, the auxiliary coil and/or the power coil act on the vibrator so as to adjust the reciprocating motion of the vibrator between the stoppers. The effect of the motion of the plan of present application is good and control precision is high.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.