公开(公告)号：US20210086777A1

公开(公告)日：2021-03-25

申请号：US17022875

申请日：2020-09-16

Applicant: TUSIMPLE, INC.

Inventor： Kun ZHANG ,  Xiaoling HAN ,  Weina MAO ,  Zehua HUANG ,  Charles A. PRICE

IPC: B60W40/068 ,  B60W10/18 ,  B60W30/14

Abstract: Techniques are described for estimating road friction between a road and tires of a vehicle. A method includes receiving, from a temperature sensor on a vehicle, a temperature value that indicates a temperature of an environment in which a vehicle is operated, determining a first range of friction values that quantify a friction between a road and tires of a vehicle based on a function of the temperature value and an extent of precipitation in a region that indicate a hazardous driving condition, obtaining, from the first range of friction values, a value that quantifies the friction between the road and the tires of the vehicle, where the value is obtained based on a driving related behavior of the vehicle, and causing the vehicle to operate on the road based on the value obtained from the first range of friction values.

公开(公告)号：US20230211788A1

公开(公告)日：2023-07-06

申请号：US18184560

申请日：2023-03-15

Applicant: TUSIMPLE, INC.

Inventor： Kun ZHANG ,  Xiaoling HAN ,  Weina MAO ,  Zehua HUANG ,  Charles A. PRICE

IPC: B60W40/068 ,  B60W10/18 ,  B60W30/14

CPC classification number: B60W40/068 ,  B60W10/18 ,  B60W30/146 ,  B60W2520/105 ,  B60W2555/20 ,  B60W2510/182

Abstract: Techniques are described for estimating road friction between a road and tires of a vehicle. A method includes receiving, from a temperature sensor on a vehicle, a temperature value that indicates a temperature of an environment in which a vehicle is operated, determining a first range of friction values that quantify a friction between a road and tires of a vehicle based on a function of the temperature value and an extent of precipitation in a region that indicate a hazardous driving condition, obtaining, from the first range of friction values, a value that quantifies the friction between the road and the tires of the vehicle, where the value is obtained based on a driving related behavior of the vehicle, and causing the vehicle to operate on the road based on the value obtained from the first range of friction values.