Method for spacing control for a motor vehicle
AssigneeVolkswagen Aktiengesellschaft
InventorsKlaus Timm, Hubert Weisser, Ralf Bergholz
Life of this patent
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Abstract
The specification discloses a method for spacing control for a motor vehicle, in which the current driving speed of the motor vehicle and the current spacing of the vehicle from an object in front of the vehicle are determined by sensor devices, and a spacing-dependent required acceleration is produced from the detected variables. For this purpose, a speed-dependent required acceleration is determined from a desired speed which is manually predetermined by the vehicle driver, and is compared with the spacing-dependent required acceleration. A manipulated variable for the driving engine and/or the braking system of the motor vehicle is then generated as a function of the required acceleration.
Claims42
A method for spacing control for a motor vehicle comprising the steps of:
- determining current vehicle speed of the motor vehicle and current spacing from an object in front of the motor vehicle by sensor devices;
- determining a spacing-dependent required acceleration to maintain a required spacing to the object;
- comparing a spacing-dependent required acceleration and a speed-dependent required acceleration determined from at least a predetermined desired speed;
- and
- generating a manipulated variable for controlling a driving engine and/or a braking system as a function of a required acceleration value.
An arrangement for controlling spacing of a motor vehicle from an object in front of the motor vehicle comprising a plurality of interlinked fuzzy controllers responsive to signals representing current speed of the motor vehicle, current spacing of the motor vehicle from an object in front of the motor vehicle, a required spacing of the motor vehicle from an object in front of the motor vehicle, a desired speed of the motor vehicle, and the speed of the object in front of the motor vehicle, to produce an output signal for controlling a driving engine and/or a braking system for the motor vehicle so as to produce a required acceleration of the motor vehicle to maintain the required spacing from the object in front of the motor vehicle.
An arrangement for controlling the spacing of a motor vehicle from an object in front of the motor vehicle comprising:
- speed sensor means for sensing instantaneous road speed of the motor vehicle;
- spacing sensor means for sensing an instantaneous spacing of the motor vehicle from an object located in front of the motor vehicle;
- spacing control means receiving signals supplied from the speed sensor means and the spacing sensor means and receiving a signal representing a predetermined desired speed and providing a spacing-dependent required acceleration based upon the received signals;
- speed control means receiving signals representing a manually selected desired speed and the instantaneous road speed of the vehicle and providing a speed-dependent required acceleration;
- an operator responsive to a spacing-dependent required acceleration and a speed-dependent required acceleration to provide an output signal representing a required acceleration;
- and
- vehicle driving and braking control means for controlling a vehicle engine and/or a vehicle brake system as a function of the required acceleration.
Dependencies are inferred from the claim text.