JP2009078590A5

JP2009078590A5 -

Info

Publication number: JP2009078590A5
Application number: JP2007247300A
Authority: JP
Filing date: 2007-09-25
Publication date: 2009-10-22
Anticipated expiration: 2027-09-25

Claims

Vehicle speed detection means for detecting the vehicle speed;
An inter-vehicle distance detecting means for detecting an inter-vehicle distance between the host vehicle and the preceding vehicle;
A target inter-vehicle distance range setting means for setting a target inter-vehicle distance range;
An inter-vehicle distance determining means for determining whether the inter-vehicle distance is within the target inter-vehicle distance range;
Vehicle stability determination means for determining whether the host vehicle is in a stable running state;
Vehicle speed control means for controlling the vehicle speed;
A vehicular travel control device comprising:
The host vehicle speed control means determines that the host vehicle is in a stable running state by the vehicle stability determination means, and further determines that the inter-vehicle distance is within the target inter-vehicle distance range by the inter-vehicle distance determination means. The vehicle speed is controlled to be constant ,
The target inter-vehicle distance range setting means uses an own vehicle speed and an inter-vehicle distance when the own vehicle is determined to be out of a stable running state by the vehicle stability determining means, and an upper limit value or a lower limit of the target inter-vehicle distance range. A vehicular travel control device that corrects a value .

The target inter-vehicle distance range setting means corrects an upper limit value or a lower limit value of the target inter-vehicle distance range when the vehicle stability determining means determines that the host vehicle has returned to a stable running state. The vehicle travel control apparatus according to claim 1 .

Storage means for storing own vehicle speed and inter-vehicle distance;
An accelerator pedal change amount acquisition means for acquiring a change amount of an accelerator pedal operation amount;
The target inter-vehicle distance range setting means includes:
When the change amount in the positive direction of the accelerator pedal operation amount acquired by the accelerator pedal change amount acquisition unit is larger than the first predetermined value, the host vehicle speed and the inter-vehicle distance at that time are stored in the storage unit,
Thereafter, when the host vehicle speed detected by the host vehicle speed detecting unit becomes substantially constant and the inter-vehicle distance determining unit determines that the inter-vehicle distance is within the target inter-vehicle distance range, the storage unit The vehicle travel control apparatus according to claim 1 or 2 , wherein the upper limit value of the target inter-vehicle distance range is corrected using the own vehicle speed and the inter-vehicle distance stored in the vehicle.

Storage means for storing own vehicle speed and inter-vehicle distance;
An accelerator pedal operation amount acquisition means for acquiring an accelerator pedal operation amount;
An accelerator pedal change amount acquisition means for acquiring a change amount of the accelerator pedal operation amount;
The target inter-vehicle distance range setting means includes:
When the accelerator pedal operation amount acquired by the accelerator pedal operation amount acquisition means is zero, or the negative change amount of the accelerator pedal operation amount acquired by the accelerator pedal change amount acquisition means is smaller than a second predetermined value In addition, the vehicle speed and the inter-vehicle distance at that time are stored in the storage means,
Thereafter, the positive change amount of the accelerator pedal operation amount acquired by the accelerator pedal change amount acquisition means is larger than a third predetermined value, and the inter-vehicle distance is within the target vehicle distance range by the inter-vehicle distance determination means. 3. The lower limit value of the target inter-vehicle distance range is corrected using the own vehicle speed and the inter-vehicle distance stored in the storage unit when it is determined that the target vehicle inter-vehicle distance is stored. Vehicle travel control device.

The target inter-vehicle distance range setting means is configured such that a difference between the target inter-vehicle distance at an arbitrary own vehicle speed and an upper limit value or a lower limit value is the target inter-vehicle distance at the own vehicle speed stored in the storage means and the storage means. so that the difference between the inter-vehicle distance is stored in the vehicular running control apparatus according to claim 3 or claim 4, characterized in that to correct the upper limit value or the lower limit value of the target following distance.

A preceding vehicle speed estimating means for estimating the preceding vehicle speed,
The own vehicle speed control means includes:
When the inter-vehicle distance exceeds the upper limit value of the target inter-vehicle distance range or the lower limit value of the target inter-vehicle distance range, the preceding vehicle speed estimation means estimates the preceding vehicle speed,
The vehicle speed is controlled so that the inter-vehicle distance becomes the target inter-vehicle distance at the estimated preceding vehicle speed,
The vehicle travel control according to any one of claims 1 to 5, wherein when the inter-vehicle distance becomes the target inter-vehicle distance, the own vehicle speed is controlled to be constant at the estimated preceding vehicle speed. apparatus.