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US 11,472,412 B2Granted
Method for ascertaining the instantaneous roadway roughness in a vehicle
AssigneeRobert Bosch GmbH
InventorMatthias Moerbe
Life of this patent
Estimating the term…
Abstract
A method for ascertaining the instantaneous roadway roughness in a vehicle. In the method, the frequency-dependent amplitude response is determined from the wheel speed, and a roughness characteristic variable is ascertained as a measure of the roadway roughness.
Claims10
A method of operating a vehicle, the method comprising the following steps:
- obtaining, by a processor of the vehicle, signals from a rotational speed sensor of a wheel of the vehicle;
- identifying, by the processor and in the obtained signals, respective amplitudes for each of a plurality of frequencies of a progression of a rotational speed of the wheel;
- based on differences between different ones of the amplitudes between different ones of the plurality of frequencies, ascertaining, by the processor, a measure of an instantaneous roadway roughness of a roadway on which the vehicle is traveling;
- and
- modifying, by the processor and based on the ascertained measure of the instantaneous roadway roughness, at least one of a braking of the vehicle on the roadway, a steering of the vehicle on the roadway, and a driving of the vehicle on the roadway.
2 more elements
A control unit comprising a processor, wherein the processor is configured to operate a vehicle by performing a method, the method comprising:
- obtaining, by the processor, signals from a rotational speed sensor of a wheel of the vehicle;
- identifying, by the processor and in the obtained signals, respective amplitudes for each of a plurality of frequencies of a progression of a rotational speed of the wheel;
- based on differences between different ones of the amplitudes between different ones of the plurality of frequencies, ascertaining, by the processor, a measure of an instantaneous roadway roughness of a roadway on which the vehicle is traveling;
- and
- modifying, by the processor and based on the ascertained measure of the instantaneous roadway roughness, at least one of a braking of the vehicle on the roadway, a steering of the vehicle on the roadway, and a driving of the vehicle on the roadway.
2 more elements
A vehicle, comprising:
- a wheel;
- a rotational speed sensor at the wheel;
- and
- a processor, wherein the processor is configured to operate the vehicle by performing a method, the method comprising:
- obtaining, by the processor, signals from the rotational speed sensor;
- identifying, by the processor and in the obtained signals, respective amplitudes for each of a plurality of frequencies of a progression of a rotational speed of the wheel;
- based on differences between different ones of the amplitudes between different ones of the plurality of frequencies, ascertaining, by the processor, a measure of an instantaneous roadway roughness of a roadway on which the vehicle is traveling;
- and
- modifying, by the processor and based on the ascertained measure of the instantaneous roadway roughness, at least one of a braking of the vehicle on the roadway, a steering of the vehicle on the roadway, and a driving of the vehicle on the roadway.
6 more elements
Dependencies are inferred from the claim text.