Operating noise control device and operating noise control method for vehicle
US8594870B2 · kind B2 · utility
3Cited by
9References
23Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 28, 2008 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Nov 19, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vehicle (1, 17) includes an electric drive motor (5, 19), an inverter (4) that provides a drive current to the electric motor (5, 19) and a controller (13) that controls the inverter (4). The controller (13) functions as a beat noise generation system that creates beat noise by generating a second operating noise containing a component an order of which is very close to a value representing an order of an operating noise generated in proportion to a rotation speed of the electric motor (5, 19) so as to create desirable traveling noise corresponding to an accelerating state while the vehicle accelerates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.