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1. (US20100228417) DRIVER HANDS ON/OFF DETECTION DURING AUTOMATED LANE CENTERING/CHANGING MANEUVER

Office : United States of America
Application Number: 12399290 Application Date: 06.03.2009
Publication Number: 20100228417 Publication Date: 09.09.2010
Publication Kind : A1
IPC:
G06F 7/00
G05D 1/00
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
7
Methods or arrangements for processing data by operating upon the order or content of the data handled
G PHYSICS
05
CONTROLLING; REGULATING
D
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
1
Control of position, course, altitude, or attitude of land, water, air, or space vehicles, e.g. automatic pilot
Applicants: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Inventors: Lee Jin-Woo
Lee Yong H.
Litkouhi Bakhtiar Brian
Agents: MILLER IP GROUP, PLC;GENERAL MOTORS CORPORATION
Priority Data:
Title: (EN) DRIVER HANDS ON/OFF DETECTION DURING AUTOMATED LANE CENTERING/CHANGING MANEUVER
Abstract: front page image
(EN)

A system and method for determining whether a vehicle driver is holding a steering wheel of the vehicle while the vehicle is in an autonomous driving mode. The vehicle will include an electric power steering (EPS) system and may include an active front steering (AFS) system, both of which include a motor that can apply a high frequency and low amplitude perturbation signal to the steering wheel of the vehicle that is not felt by the vehicle driver and does not cause the vehicle to turn, but is able to be detected by a steering angle sensor. The method subtracts a steering angle command signal from the steering angle signal and removes road disturbances, and then determines whether the induced perturbation signal is present in the steering angle sensor signal. If the perturbation signal is present, then the system knows that the vehicle driver is not holding the steering wheel.