Assembly and method for active control of the rolling noise for a motor vehicle

1. An active rolling noise control assembly for a motor vehicle, comprising:

a trajectory control device comprising at least one wheel speed sensor fixed to a steering knuckle of a wheel of the motor vehicle, and

an anti-noise device configured to command at least one loudspeaker installed in a passenger compartment of the motor vehicle,

wherein the trajectory control device comprises another sensor fixed to said steering knuckle, said trajectory control device being configured to transmit, to said anti-noise device, measurements obtained by said other sensor, and

wherein said anti-noise device is configured to generate an anti-noise signal based on said measurements obtained from said other sensor and command an emission thereof via said loudspeaker.

2. The assembly as claimed in claim 1 , wherein:

the trajectory control device comprises, for each wheel of the motor vehicle, a speed sensor mounted on said steering knuckle associated with said wheel,

the trajectory control device comprises, for each wheel, another sensor mounted on said associated steering knuckle,

said trajectory control device is configured to transmit, to said anti-noise device, said measurements obtained by each of said other sensors, and

said anti-noise device is configured to command the loudspeaker to emit an anti-noise signal based on said measurements obtained from each of said sensors.

3. The assembly as claimed in claim 1 , wherein said at least one other sensor comprises an accelerometer or an angular velocity sensor.

4. The assembly as claimed in claim 3 , wherein said accelerometer is a three-axis accelerometer or said angular velocity sensor is a gyrometer or a laser sensor.

5. The assembly as claimed in claim 1 , wherein said other sensors are configured to sample said measurements obtained from said associated steering knuckles at a frequency greater than or equal to 2000 Hz.

6. The assembly as claimed in claim 1 , wherein said trajectory control device communicates with said anti-noise device via a low-latency communication bus.

7. The assembly as claimed in claim 6 , wherein said low-latency communication bus has a maximum latency of one or two samples.

8. The assembly as claimed in claim 6 , wherein said communication bus is configured to transmit said measurements obtained by said other sensors at a frequency at least equal to said sampling frequency of said other sensors.

9. The assembly as claimed in claim 1 , further comprising, in the passenger compartment of the motor vehicle, at least one microphone that is configured to pick up the noise to be reduced that is present in the passenger compartment,

wherein said anti-noise device is configured to command the loudspeakers to emit an anti-noise signal based on said ambient noise picked up by said at least one microphone.

10. An active rolling noise control method for a motor vehicle, implemented by the anti-noise device of the assembly as claimed in claim 9 , said method comprising:

receiving at least one set of sampled values of measurements acquired by said other sensors of the trajectory control device;

generating an anti-noise signal based on said received sampled values; and

emitting said anti-noise signal via said loudspeakers of said anti-noise device.

11. The method as claimed in claim 10 , wherein said anti-noise signal is generated by a feedforward command, in which the reference signal corresponds to all of the sampled measurements from said other sensors, and an error signal is supplied by sampling a sound obtained by a microphone in the passenger compartment of the motor vehicle.

12. A motor vehicle comprising:

the assembly as claimed in claim 1 .