Electric power steering device and control method therefor
US11173951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2017 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Dec 12, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D15/021
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Provided is an electric power steering device including a phase compensation unit having a desirable phase compensation characteristic for each vehicle speed region, which suppresses deterioration in stability of a steering system in a case where the phase compensation characteristic is changed to a different phase compensation characteristic, in which the phase compensation unit includes: a plurality of phase compensation calculation units configured to execute phase compensation calculation based on each phase compensation characteristic; a phase compensation characteristic determination unit configured to determine a phase compensation characteristic based on a vehicle speed signal output from a vehicle speed sensor; and a selection unit configured to select a phase-compensated torque signal output by the phase compensation unit from phase compensation calculation results output by the plurality of phase compensation calculation units in consideration of an amount of change in phase compensation calculation result at a time of switching the phase compensation characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.