Method and apparatus for stepper motor stall detection
US7880423B2 · kind B2 · utility
1Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Feb 21, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P8/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A detector device and a method for detecting a stall condition in a stepper motor, wherein the characteristics of the back EMF are identified directly from a waveform of the back EMF, specifically a first peak of the back EMF, a valley of the back EMF, and a second peak of the rectified integral of the back EMF, to determine a condition of the stepper motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.