| 摘要 |
PROBLEM TO BE SOLVED: To smoothen acceleration and deceleration in time of control over an inter- car distance by compensating this inter-car distance for decrement when a relative speed is in a direction where one's own car and a preceding car are approaching but for increment when it is in a direction of separation the other way, making these compensations as temporary target inter-car distance, and then setting up a target inter-car distance so as to make this temporary target inter-car distance come nearer to a reference inter-car distance. SOLUTION: Each signal of inter-car distance L and car speed V detected by an inter-car distance sensor 1 and a car speed sensor 2 is inputted into a control circuit 3, a relative speed with a preceding car is operated by a relative speed operational part 3A, and thereby a reference inter-car distance is set up by a reference inter-car distance operational part 3B. A temporary target inter-car distance setting part 3C operates a temporary target inter-car distance, approximating it up to the reference inter-car distance by a target inter-car distance inductive part 3D. Then a control signal of the inter-car distance is outputted to a throttle actuator 4 and a brake actuator 5 from an inter-car distance control part 3E. In addition, the temporary target inter-car distance is set to a shorter value than the inter-car distance L when relative speed V<0 is the case, but it is set to a longer value than the inter-car distance L when relative speed V>0 is the case the other way.
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