Device and method for automatically determining wear of tires
AssigneeTactile Mobility Ltd.
InventorsBoaz MIZRACHI, Jacobus Daniel POTGIETER, Stanislav SHAPIRA, Michael ZAK, Michal GOLAN
Life of this patent
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Abstract
A method of determining a wear of a tire, which may include, using a computing device operating a processor: based on signals from one or more sensors of a vehicle, determining a plurality of tire parameters of a tire; based on at least a portion of the tire parameters, determining a normalized rolling radius of the tire, the normalized rolling radius being an effective rolling radius of the tire under a zero rotational speed, a zero load or both; and based on a change in the normalized rolling radius of the tire over a period of time, determining an average wear value of the tire.
Claims18
A method of determining the wear of a tire, the method comprising, using a computing device operating a processor:
- obtaining, in real time, during a ride of a vehicle, signals from sensors of the vehicle, the sensors comprising a wheel speed sensor, a pressure sensor and a torque sensor;
- based on the signals, determining, in real time, during the ride of the vehicle, a plurality of tire parameters of a tire, the tire parameters comprising a load acting on the tire, a rotational speed of the tire and a pressure within the tire;
- based on at least a portion of the tire parameters, determining, in real time, during the ride of the vehicle, a normalized rolling radius of the tire, the normalized rolling radius being an effective rolling radius of the tire under a zero rotational speed, a zero load or both;
- and
- based on a change in the normalized rolling radius of the tire over a period of time, determining, in real time, during the ride of the vehicle, an average wear value of the tire.
A method of determining a wear of a tire, the method comprising, using a computing device operating a processor:
- obtaining, in real time, during a ride of a vehicle, signals from sensors of the vehicle, the sensors comprising a wheel speed sensor, a pressure sensor and a torque sensor;
- based on the signals, determining, in real time, during the ride of the vehicle, a plurality of tire parameters of a tire, the tire parameters comprising a load acting on the tire, a rotational speed of the tire, a pressure within the tire, a torque acting on the tire and a slip of the tire;
- based on at least a portion of the tire parameters, determining, in real time, during the ride of the vehicle:
- a normalized rolling radius of the tire, the normalized rolling radius being an effective rolling radius of the tire under a zero rotational speed, a zero load or both, and
- a normalized stiffness of the tire, the normalized stiffness of the tire being an effective stiffness of the tire under a zero torque;
- and
- based on a change in the normalized rolling radius and a change in the normalized stiffness of the tire over a period of time, determining, in real time, during the ride of the vehicle, at least one of an irregular wear type of the tire and an irregular wear value of the tire.
Dependencies are inferred from the claim text.