Protection circuits for motors
US9166505B1 · kind B1 · utility
0Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 2014 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Apr 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
System and methods are provided for protecting a direct current (DC) motor. A protection system includes: a motor drive component configured to drive a DC motor, a feedback component configured to generate a feedback signal related to motion of the DC motor, and a watchdog circuit configured to output a fault signal to the motor drive component to stop the DC motor in response to the feedback signal indicating abnormal motion of the DC motor. The watchdog circuit includes a hardware watchdog timer configured to be activated in response to one or more control signals and monitor the feedback signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.