ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,521, issued on Sept. 16, was assigned to Volvo Truck Corp. (Gothenburg, Sweden).
"On-board road friction estimation" was invented by Mats Jonasson (Partille, Sweden), Leo Laine (Harryda, Sweden) and Leon Henderson (Harryda, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A road friction coefficient of a vehicle is estimated by obtaining substantially contemporaneous values associated with a steering angle for a steered axle of the vehicle, a lateral acceleration, a yaw acceleration, an alignment torque and an axle load on the steered axle; estimating a lateral tire force on the basis of the steering angle, lateral acceleration, and yaw accele...