Gm Global Technolgoy Operations, Inc.

Loren J Majersik

Jeffrey S Parks

Yunjun Li

Christopher A Kinser

Nancy McMahon

Robert R Bolio

Nathan A Wilmot

Matthew M Karaba

John X Cui

Steven A Opiteck

Ross Feller

Timothy J Herrick

Chris C Swoish

Examples of techniques for controlling a vehicle using an anchor line are disclosed. In one example implementation, a computer-implemented method includes receiving a lane line quality indicator from a camera associated with a vehicle. The method further includes determining a lane line weight. The method further includes comparing the lane line quality indicator to a quality threshold to determine whether the lane line is of sufficient quality to use as an anchor line. The method further includes comparing the lane line weight to a confidence threshold to determine whether the lane line is of sufficient confidence to use as the anchor line. The method further includes, responsive to determining that at least one of the lane line is not of sufficient quality and the lane line is not of sufficient weight, generating an alternate anchor line. The method further includes controlling the vehicle using the alternate anchor line.

Controlling a vehicle using an alternate anchor line

A method and apparatus for determining a route of a vehicle are provided. The method includes activating fail operative steering in response to detecting an electronic power steering (EPS) failure, determining a length of a lane map fusion ring, calculating a desired route based on a line of the lane map fusion ring if the determined length is greater than a first predetermined distance, and calculating desired route based on offset information and heading information of the lane map fusion ring and curvature information and curvature derivative information calculated from map data if the determined length is less than the first predetermined distance.

Method and apparatus for position error detection

A method for controlling a limited by-wire active front steering system includes measuring an input steering angle, determining a tire saturation limit, and comparing the saturation limit to the input angle. A target actuator angle from a steering actuator is limited when the input angle is greater than the saturation limit. A constant value provides a fixed steering gear ratio when the input angle is less than the saturation limit. A limited by-wire steering system for a vehicle includes a steering device, a sensor for measuring an input steering angle, a controller for calculating a first target actuator angle when the input angle is less than a threshold, and a second target actuator angle when the input angle is greater than the threshold. The threshold is a calibrated saturation limit of a road wheel of the vehicle.

Authority limits for a vehicle steering system

An active suspension system and method for controlling the height of a vehicle. In an exemplary embodiment, the active suspension system receives information from one or more input sources, including both internal and external vehicle inputs, and uses that information to actively control the vehicle height. By doing so, the active suspension system can reduce aerodynamic drag on the vehicle and improve the vehicle's fuel economy, ride comfort, handling, and other aspects of operation. Some examples of external vehicle inputs that may be used include: short-range road and vehicle information, as well as long-range traffic, road and route information.

Active suspension system for a vehicle and method of operating the same

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Salt Lake City, UT, United States of America

Loren J Majersik