| 摘要 |
PROBLEM TO BE SOLVED: To improve the ride comfort when the sight of a preceding vehicle is lost during the control for following the preceding vehicle, and to stop the control quickly when there is no preceding vehicle at all. SOLUTION: When the sight of the preceding vehicle is lost, supported relative car speedΔVEST and supposed inter-vehicle distance LEST are calculated using relative accelerationΔαjust before losing sight of the preceding vehicle for sight losing holding time tLST, and preceding vehicle following travel control is continued based on the results of calculation and stops after the lapse of sight losing holding time tLST. The sight losing holding time tLST must be set to a small value, the larger the lateral deviation LX of the preceding vehicle in relation to the vehicle of the driver is, the smaller value it must be. It must be set to a large value when the preceding vehicle runs on the road where the sight of the preceding vehicle is liable to be lost because of curves and long inter-vehicle distance. When the relative car speed is negative, sight losing holding time tLST must also be set to a large value so that the vehicle of the driver is not too close to the preceding vehicle. COPYRIGHT: (C)2003,JPO |
