TIRE SENSOR-BASED VEHICLE STATE ESTIMATION SYSTEM AND METHOD

摘要

A vehicle state estimation system and method uses an observer model to make cornering stiffness estimates from tire-based sensor data and vehicle-based sensor data throughout transient and non-transient operational maneuvers of a vehicle. A cornering stiffness identifier extracts transient-state cornering stiffness estimates from the cornering stiffness estimates made by the observer model and extracts from the transient-state cornering stiffness estimates an optimal transient-state cornering stiffness estimate having a substantially highest confidence measure for use by a vehicle control system.

主权项

1. A vehicle state estimation system comprising:
a vehicle supported by at least one tire, the vehicle operating in transient maneuver states or non-transient maneuver states throughout operational maneuvers of the vehicle; at least one tire-based sensor mounted to the at least one tire and operative to generate tire-based sensor data; at least one vehicle-based sensor mounted to the vehicle and operative to generate vehicle-based sensor data; an observer model operative to make cornering stiffness estimates from the tire-based sensor data and the vehicle-based sensor data throughout the operational maneuvers of the vehicle; and a cornering stiffness identifier operative to extract and output transient-state cornering stiffness estimates from the observer model cornering stiffness estimates throughout the operational maneuvers of the vehicle.