| 摘要 |
A control apparatus for controlling distance between vehicles and reducing and preventing a collision and a control method is provided to secure safety for drivers by controlling the distance between vehicles and reduction and prevention of a collision with one controller in consideration of the road condition or weather condition. A control apparatus for controlling distance between vehicles and reducing and preventing a collision is composed of: a millimeter wave radar sensor(32) detecting whether the preceding vehicle exists or not, and measuring the relative distance to the preceding vehicle and relative speed; a friction force estimating instrument(34) estimating friction force of tires and the road surface; an acceleration sensor(36) measuring the acceleration of the vehicle; a driving characteristic analyzer receiving information from the millimeter wave radar sensor, the friction force estimating instrument, and the acceleration sensor and operation information of a brake, storing the information, and making the driving characteristic of a driver into a parameter by analyzing the information; a brake actuator(22) controlling the operation of the brake; and a control unit(20) receiving the parameter output by analyzing the driving characteristic of a driver, from the driving characteristic analyzer and the driving information of the present vehicle, and calculating and monitoring a collision warning index and time-to-collision on the basis of the driving information of the present vehicle and the transmitted parameters. The control unit controls the brake actuator by calculating target acceleration on the basis of the collision warning index and time-to-collision.
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