Kelsey-hayes Company

Trw Automotive U.S. LLC

Kenneth A Doll

Richard J Barron

Danny R Milot

Arnold H Spieker

Josef Knechtges

Frank Einig

Stephen J Green

Ralf Raffauf

Steven Dale Keen

A periodic test signal () is injected into a sensor and the sensor output () is compared to a threshold to determined whether the sensor is functioning properly.

Periodic rate sensor self test

A vehicle control system includes a steering mechanism adapted to be operatively connected to associated wheels of a vehicle. A position sensor is operatively connected to the steering mechanism to generate a signal representative of a position of the steering mechanism. A filter device receives the steering position signal and generates a filtered output. The electronic control unit is operable to generate a control signal based at least in part upon the filtered steering position signal. A vehicle control subsystem is in communication with the electronic control unit and is responsive to the control signal. A vehicle system is controlled by monitoring the position of a steering mechanism of a vehicle, determining a rate of change of the position of the steering mechanism, filtering the rate of change, comparing the filtered rate of change to a threshold value, and controlling a vehicle system based upon the comparison.

Vehicle control system and method of controlling a vehicle system

An apparatus and method for determining the presence of excessive yaw rate in a vehicle by calculating an instability index that is a function of the vehicle yaw rate and generating an excessive yaw rate signal when the instability index exceeds a yaw rate threshold.

Method and apparatus for detecting and correcting trailer induced yaw movements in a towing vehicle

An apparatus and control method for a motor vehicle having steerable front and rear wheels and an associated wheel brake for each wheel. The apparatus and control method includes a sensor for generating a vehicle dynamic state signal based upon a sensed vehicle dynamic state of the vehicle. A vehicle stability control system is provided to control the selective braking of the wheel brakes of the vehicle based, at least in part, upon the vehicle dynamic state signal. A rear wheel steering system for controlling steering of the rear wheels based, at least in part, upon the vehicle dynamic state signal is also provided.

Control architecture and method for integrating vehicle stability control functions with rear wheel steering control functions in a motor vehicle

Direct sensing of rough road conditions are used to modify operation of a wheel slip control system. At least one suspension sensor () senses an operating parameter of the suspension system. A road surface classifier is responsive to the suspension pension sensor () for generating a road surface signal representing a roughness of a road surface over which the vehicle travels. A braking system includes a wheel speed sensor and a brake actuator. An active braking control detector wheel slip in response to the wheel speed sensor () during at least one of braking or accelerating of the vehicle and modulates the brake actuator in response to the detected wheel slip. The active braking control is responsive to the road surface signal for modifying modulation f the brake actuator as a function of the road surface signal.

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Ann Arbor, MI, United States of America

Kenneth A Doll