Motor torque control apparatus and method
US9154072B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 5, 2013 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Apr 9, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/40
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A motor torque control apparatus and method are provided for reducing jolting and noise caused by an acceleration or tip-in operation in an electric or fuel cell vehicle and for improving response to acceleration by the acceleration or tip-in operation. The motor torque control apparatus includes a limiter operative to limit a slew rate of a final torque signal applied to a motor of the vehicle based on a maximum slew rate selected from one of two previously-input slew rate variable maps. Specifically, L-mode and D-mode control units select the slew rate according to slew rate variable maps of an L mode and of D mode, respectively. A switch unit connects one of the L-mode and D-mode control units to the limiter based on a current operation state of the vehicle. The control units select the slew rate based on the torque signal output by the limiter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.