Patent ID: 11945266
Assignee: INFINEON TECHNOLOGIES AG
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A system for estimating a tire load of a tire, comprising:
at least one pressure sensor configured to measure an internal air pressure of the tire and generate at least one tire pressure signal indicating a tire pressure corresponding to the internal air pressure;
at least one acceleration sensor configured to measure an acceleration of the tire and generate at least one tire acceleration signal indicating a tire acceleration corresponding to the acceleration of the tire;
at least one temperature sensor configured to measure a temperature of the tire and generate at least one tire temperature signal indicating the temperature; and
at least one processor configured to:
calculate a duration of a contact patch based on the at least one tire acceleration signal,
obtain a tire wear of the tire based on the at least one tire acceleration signal,
calculate a vehicle speed based on the at least one tire acceleration signal,
select at least one coefficient of a system model from a plurality of stored coefficients based on the at least one tire pressure signal, the at least one tire temperature signal, and the tire wear of the tire, and
calculate the tire load of the tire using the system model that correlates the tire pressure, the duration of the contact patch, and the vehicle speed to the tire load of the tire, wherein the at least one processor uses the at least one coefficient, the tire pressure, the duration of the contact patch, and the vehicle speed in the system model for calculating the tire load of the tire.