Robust rotational position alignment using a relative position encoder
US8217601B2 · kind B2 · utility
3Cited by
10References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 2, 2010 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Dec 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A robust method for detecting a relative position of a feedback device, such as an encoder or resolver, coupled to a shaft, such as a motor shaft, is provided. To detect the relative position, electrical commands are issued in an open loop mode to spin the motor shaft an amount greater than the apparent rotational angle between two consecutive markers of the position feedback device, such that the net mechanical rotation is equal to or greater than the total rotational angle between two consecutive markers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.