Distance control apparatus for vehicle

A distance control apparatus for a vehicle, comprising:

• a self vehicle speed detecting means for detecting a vehicle speed of the vehicle;
• a distance measuring means for measuring a distance between the vehicle and a preceding vehicle;
• a driver model calculating means for calculating a driver model deceleration distance and a driver model acceleration distance from the vehicle speed and the distance and a driver's control characteristics;
• a vehicle model calculating means for calculating a vehicle model deceleration distance from the vehicle speed and physical characteristics of the vehicle;
• and
• a control means for executing a deceleration control of the vehicle according to a larger one of the driver model deceleration distance and the vehicle model deceleration distance and for executing an acceleration control of the vehicle according to the driver model acceleration distance;
• wherein the driver model acceleration distance is calculated by the following equation:
• Driver model acceleration distance =A'.times.vehicle speed +B'
• wherein A' and B' are constants.

A distance control apparatus for a vehicle, comprising:

• a self vehicle speed detecting means for detecting a vehicle speed of the vehicle;
• a distance measuring means for measuring a distance between the vehicle and a preceding vehicle;
• a driver model calculating means for calculating a driver model deceleration distance and a driver model acceleration distance from the vehicle speed and the distance and a driver's control characteristics;
• a vehicle model calculating means for calculating a vehicle model deceleration distance from the vehicle speed and physical characteristics of the vehicle;
• and
• a control means for executing a deceleration control of the vehicle according to a larger one of the driver model deceleration distance and the vehicle model deceleration distance and for executing an acceleration control of the vehicle according to the driver model acceleration distance;
• wherein the vehicle model deceleration distance is calculated by the following equation:
• Deceleration=F.times.vehicle speed
• Deceleration distance=relative speed.times.relative speed .div.(2.times.deceleration)
• Vehicle model deceleration distance =deceleration distance +G
• wherein F and G are constants and the relative speed is a value obtained by subtracting the vehicle speed from a vehicle speed of a preceding vehicle and is smaller than 0.

A distance control apparatus for a vehicle, comprising:

• a self vehicle speed detecting means for detecting a vehicle speed of the vehicle;
• a distance measuring means for measuring a distance between the vehicle and a preceding vehicle;
• a driver model calculating means for calculating a driver model deceleration distance by the following equation:
• Driver model deceleration distance=A.times.vehicle speed+B +relative speed.times.relative speed+(C.times.vehicle speed)
• wherein A, B and C are constants, and the relative speed is a value obtained by subtracting the vehicle speed from a vehicle speed of a preceding vehicle and is smaller than 0;
• a vehicle model calculating means for calculating a vehicle model deceleration distance by the following equations:
• Deceleration=F.times.vehicle speed Deceleration distance=relative speed.times.relative speed .div.(2.times.deceleration)
• Vehicle model deceleration distance =deceleration distance+G
• wherein F and G are constants;
• a control means for executing a deceleration control of the vehicle according to a larger one of the driver model deceleration distance and the vehicle model deceleration distance.