Motor driving device and steering system
US11190120B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2019 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Dec 1, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0412
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a motor driving device, a current detector detects a value of the motor current, and a limit variable calculator calculates a calculation value of a limit variable for limiting the command current. A determiner determines, based on a relationship between the value of the motor current and the calculation value of the limit variable, whether the motor current is in a less-response situation to change of the command current. A current limiter determines whether to limit a value of the command current based on the calculation value of the limit variable in accordance with a result of the determination of whether the motor current is in the less-response situation to change of the command current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.