Motor drive control device and motor drive control method
US10498265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2018 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | May 3, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a motor drive control device capable of accurately and speedily detecting an abnormal condition of a motor. When the motor is started, the control circuit section determines the commanded rotational speed in accordance with an actual rotational speed calculated based on the position signal, the control circuit section determines whether or not the motor is in an abnormal condition based on a predetermined determination condition for a predetermined period, upon determining that the motor is in the abnormal condition, the control circuit section outputs the drive control signal to the motor drive section to stop the motor, and the abnormal condition includes a reversely rotating state. In the reversely rotating state the motor rotating in a direction opposite to a rotating direction when the motor is successfully started.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.