Delphi Technologies, Inc.

Gm Global Technolgoy Operations, Inc.

John E Dickinson

Mutasim Abdurrahman Salman

Eldon Gerrald Leaphart

Douglass L Carson

Hong Xing Hu

Farhad Bolourchi

Aleksander Boguslaw Hac

Karen Ann Boswell

Stephen R Pastor

Hsien Heng Chen

Todd R Brown

Steven L Tracht

Michael Douglas Rizzo

Alan J Lee

John D Martens

Gordon L Tierney

Edward J Bednar

A method for collision avoidance using automated braking and steering comprising: determining an actual distance to an obstacle in a path of a vehicle; determining a relative velocity between the obstacle and the vehicle; determining a first distance sufficient to avoid collision by braking only; determining a second distance sufficient to avoid collision by combined braking and steering around the obstacle. The method also includes: applying braking if at least one of, the first distance exceeds the actual distance and the first distance is within a selected threshold of the actual distance. If the actual distance exceeds the second distance and a lane change is permitted, steering control to affect a lane change is applied.

Collision avoidance with active steering and braking

Disclosed herein in an exemplary embodiment is a method for providing variable assist in an active steering system of a vehicle. The method comprises: receiving an input signal that includes at least one of, a variable ratio command signal, a stability command signal, a hand wheel position signal, a vehicle speed signal indicative of a speed of the vehicle, a signal indicative of an operator selected function, and a signal indicative a vehicle operating mode. The method also comprises: generating an assist command to an assist mechanism responsive to the input signal wherein the assist mechanism is operatively coupled to the differential actuator and a road wheel of the steering system to provide an assist torque responsive to the motion of the output shaft. The active steering system includes a hand wheel operatively coupled to an input of a differential actuator and a motor operatively coupled to the differential actuator. The differential actuator is configured to translate motion of the input into motion of the output shaft, where the motion of the output shaft is further responsive to the motor and wherein the output shaft is coupled to the road wheel of the steering system.

Assist modification in active front steering

A method for automatically adjusting a vehicle stability enhancement (VSE) system. The VSE system is used in conjunction with a steering system having a plurality of driver-selectable steering modes associated therewith. The method includes configuring a reference model within the VSE system to generate desired vehicle handling aspects, the desired vehicle handling aspects being a function of one or more driver inputs to the steering system. Then, a determination is made as to which of the plurality of driver-selectable steering modes is activated, wherein each of the desired vehicle handling aspects generated is made further dependent upon a specific steering mode selected, and wherein the desired vehicle handling aspects include a desired steady state yaw rate; and the one or more driver inputs includes an effective road wheel position.

Method for automatically adjusting reference models in vehicle stability enhancement (VSE) systems

A sensor-responsive control method for use on a motor vehicle, comprising the steps of: measuring a vehicle yaw rate; measuring a vehicle lateral acceleration; responsive to the measured yaw rate and lateral acceleration, estimating a steering wheel angle; determining an error signal responsive to the difference between the estimated steering wheel angle and an adaptive steering position signal; and updating the adaptive steering position signal responsive to the error signal, wherein the adaptive steering position signal is quickly determined after the vehicle begins to move.

Sensor-responsive control method and apparatus

A comprehensive diagnostic for an active brake control system for automatically increasing braking at selected wheels of an automotive vehicle in response to detected vehicle turning maneuvers provides a hierarchy of diagnostic procedures for diagnosing local transducer and transducer circuit fault conditions, for diagnosing lack of correlation between transducers and subsystems, and for diagnosing low system level performance. Transducers or subsystems are isolated and indicated as the source of diagnosed low system performance to facilitate fault treatment procedures. Active brake control system authority is automatically reduced for at least the duration of diagnosed fault conditions.

Active brake control diagnostic

Growing community of inventors

Brighton, MI, United States of America

John E Dickinson