Adaptive cruise control system
First Claim
1. A headway regulated cruise control system for a motor vehicle having a braking system including a service brake, the system comprising an electronic controller is suitably programmed todetect driving data of the motor vehicle and distance data with respect to a preceding vehicle,calculate a motion prediction from the driving data and the distance data,influence the state of motion of the motor vehicle by influencing one of driving and braking system devices,output a warning signal to a driver of the motor vehicle when the motion prediction indicates that, with a predetermined limiting retardation, with the headway regulated cruise controller activated and without driver intervention, a probability of collision with the preceding vehicle that exceeds a predetermined collision probability threshold value,detect braking parameters for calculating a maximum braking retardation that can be achieved with the service brakes, andreduce the limiting retardation when the maximum braking retardation is below a predetermined retardation threshold value.
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Accused Products
Abstract
An adaptive cruise control system for a motor vehicle includes a service brake comprising an electronic controller programmed/configured to detect driving data of the vehicle and distance data to a preceding vehicle, to calculate a movement prediction based on the driving and distance data, to influence the movement of the vehicle by influencing driving and braking, and to output a warning signal to the vehicle driver if the prediction indicates that, assuming a predetermined limiting braking retardation, a probability of an impact with another vehicle, with the adaptive cruise control system being activated, exceeds a predetermined impact probability threshold value without any intervention on the part of the driver. The controller is configured to detect braking parameters, based on which a maximum braking retardation that can be achieved with the service brakes can be calculated, and to reduce the limiting retardation, if the maximum retardation is below a predetermined value.
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Citations
12 Claims
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1. A headway regulated cruise control system for a motor vehicle having a braking system including a service brake, the system comprising an electronic controller is suitably programmed to
detect driving data of the motor vehicle and distance data with respect to a preceding vehicle, calculate a motion prediction from the driving data and the distance data, influence the state of motion of the motor vehicle by influencing one of driving and braking system devices, output a warning signal to a driver of the motor vehicle when the motion prediction indicates that, with a predetermined limiting retardation, with the headway regulated cruise controller activated and without driver intervention, a probability of collision with the preceding vehicle that exceeds a predetermined collision probability threshold value, detect braking parameters for calculating a maximum braking retardation that can be achieved with the service brakes, and reduce the limiting retardation when the maximum braking retardation is below a predetermined retardation threshold value.
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10. A method for effecting headway regulated cruise control in a motor vehicle, the method comprising the steps of:
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(a) detecting driving data of the motor vehicle and distance data with respect to a preceding vehicle, (b) calculating a motion prediction from the driving data and the distance data (c) influencing the state of motion of the motor vehicle by influencing at least one of driving and braking devices, and (d) outputting a warning signal to a driver of the motor vehicle when the motion prediction indicates that, with a predetermined limiting retardation, a collision probability of a collision with the preceding vehicle exceeds a predetermined collision probability threshold value, (e) calculating a maximum achievable braking retardation from braking parameters of the service brakes, and (f) reducing the limiting retardation when the maximum braking retardation is below a predetermined retardation threshold value. - View Dependent Claims (11, 12)
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Specification