| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform optimum control by changing over response characteristics when an inter-vehicle distance is made to agree with a target inter-vehicle distance in the preceding vehicle follow-up control so as to eliminate a sense of incongruity given to a driver. SOLUTION: A target vehicle speed V' is calculated in an inter-vehicle distance control part based on an inter-vehicle distance L detected by an inter- vehicle distance sensor and one's own vehicle speed VS detected by a vehicle speed sensor so that one's own vehicle speed is made to agree with the target vehicle speed in a vehicle speed control part based on the target vehicle speed. At this time, whether a condition is a high response requiring condition requiring high response characteristics or not is judged based on the relative relation among a target inter-vehicle distance L', an inter-vehicle distance command value Lr, and an actual inner-vehicle distance L (step S10 to S13). When the condition is response requiring condition, a natural frequency is changed to the natural frequency for high responseωnH higher than an ordinary value to increase the response characteristics of a model computing the inter-vehicle distance command value Lr.</p> |
