Vehicle steering-based speed control system and method

摘要

A control system and method is provided for a vehicle. The control system includes a speed sensor, a wheel angle sensor, and a vehicle position sensor. An electronic control unit (ECU) determines a yaw-rate error as a function of at least the vehicle position signal, determines a first speed limit as a function of the yaw-rate error, determines a second speed limit as a function of a vehicle lateral acceleration, and determines a third speed limit as a function of the wheel angle signal. The ECU selects the lowest of the first, second and third speed limits, generates a front wheel drive command and a diff lock command as a function of the wheel angle signal. The ECU also limits the vehicle speed to not greater than the selected lowest wheel speed limit.

主权项

1. A control system for a vehicle having a propulsion system supplying torque to driven wheels, and an electronic control unit (ECU), the control system comprising:
a speed sensor generating a vehicle speed signal; a wheel angle sensor generating a wheel angle signal which represents an angle of the steered wheels; and a vehicle position sensor generating a vehicle position signal, the ECU determining an expected yaw-rate as a function of the wheel angle signal and the vehicle speed signal, the ECU determining a yaw-rate error as a function of a difference between the vehicle position signal and the expected yaw-rate, determining a speed limit as a function of the yaw-rate error, and in response to the speed limit, and controlling the propulsion system so that the vehicle speed is not greater than the speed limit.