Device for attenuating the rolling noise of vehicles
AssigneeHutchinson
InventorsJean-Michel Simon, Didier Barat
Life of this patent
Estimating the term…
Abstract
Device for attenuating the rolling noise of vehicles, mounted on a component (3) connected to the wheel. The device includes an annular mass (5) coaxial with the wheel shaft (2) and several actuators of the automatically-controlled linear motor type (6 to 8), acting radially between the mass (5)and the component (3). The motors (6 to 8) are variable-reluctance motors. The device also includes elastic members (9) around the shaft (2) and capable of withstanding the static loads exerted between the inertial mass or masses (5) and the said component (3). The actuators and their powering alternators may be housed in the wheel rims.
Claims7
A device for attenuating rolling noise or vibrations of a wheel of a vehicle, where the wheel includes a component surrounding a shaft about which the wheel rotates, said attenuating device comprising:
- an accelerometer secured to the component which provides signals representing accelerations of the wheel in vertical and horizontal directions;
- an inertial mass distributed about the shaft;
- a controlled actuator connecting said inertial mass to the component;
- an electrical current feeding means for supplying powering current to said actuator in response to signals received from said accelerometer such that said actuator moves said inertial mass to create loads tending to cancel out the noise or vibrations of the wheel.
Dependencies are inferred from the claim text.