Method and circuit arrangement for operating stepper motors
US7301300B2 · kind B2 · utility
3Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2003 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Aug 24, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P8/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and a circuit arrangement for operating stepper motors or other appropriately dimensioned synchronous motors is disclosed in which between a first operational mode for normal motor operation and a second operational mode for detecting an operating state of the motor like for example its load can be switched. The method and the circuit arrangement is especially provided for determining a reference position of the motor without sensors by driving the motor against a mechanical stop wherein an increase of the load which is caused by this, is detected as a change of the operating state (FIG. 1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.