Vehicle travel control apparatus

Patent metadata

Field	Value
Publication number	US-2016200320-A1
Application number	US-201414915783-A
Country	US
Kind code	A1
Filing date	Sep 1, 2014
Priority date	Sep 6, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

A vehicle travel control apparatus includes: a sensor that obtains preceding vehicle information representing a status of a preceding vehicle; a communication apparatus that obtains preceding vehicle acceleration/deceleration information, which is generated in the preceding vehicle, via communication with the preceding vehicle; and a controller that generates a first target value related to a target acceleration/deceleration value of a host vehicle based on the preceding vehicle information and a second target value related to the target acceleration/deceleration value of the host vehicle based on the preceding vehicle acceleration/deceleration information, and controls acceleration/deceleration of the host vehicle based on the generated first and second target values, wherein the controller corrects the preceding vehicle acceleration/deceleration information according to a travel scene to generate the second target value.

First claim

1 . A vehicle travel control apparatus, comprising:
a sensor that obtains preceding vehicle information representing a status of a preceding vehicle;
a communication apparatus that obtains preceding vehicle acceleration/deceleration information, which is generated in the preceding vehicle, via communication with the preceding vehicle; and
a controller that generates a first target value related to a target acceleration/deceleration value of a host vehicle based on the preceding vehicle information and a second target value related to the target acceleration/deceleration value of the host vehicle based on the preceding vehicle acceleration/deceleration information, and controls acceleration/deceleration of the host vehicle based on the generated first and second target values, wherein
the controller corrects the preceding vehicle acceleration/deceleration information according to a travel scene to generate the second target value.

2 . The vehicle travel control apparatus of claim 1 , wherein the controller corrects the preceding vehicle acceleration/deceleration information based on at least one of a acceleration/deceleration state of the preceding vehicle, an inter-vehicle distance or an inter-vehicle time with respect to the preceding vehicle, and a vehicle speed of the host vehicle.

3 . The vehicle travel control apparatus of claim 2 , wherein the controller corrects the preceding vehicle acceleration/deceleration information based on the acceleration/deceleration state of the preceding vehicle in such a manner that a response of acceleration/deceleration of the host vehicle to acceleration/deceleration of the preceding vehicle becomes worse in a case where the acceleration/deceleration state of the preceding vehicle is an acceleration state than the response in a case where the acceleration/deceleration state of the preceding vehicle is a deceleration state.

4 . The vehicle travel control apparatus of claim 2 , wherein the controller corrects the preceding vehicle acceleration/deceleration information based on the acceleration/deceleration state of the preceding vehicle and the inter-vehicle distance or the inter-vehicle time with respect to the preceding vehicle in such a manner that, when the acceleration/deceleration state of the preceding vehicle is an acceleration state, a response of acceleration/deceleration of the host vehicle to acceleration/deceleration of the preceding vehicle becomes worse in a case where the inter-vehicle distance or the inter-vehicle time is first or second value than the response in a case where the inter-vehicle distance or the inter-vehicle time is a third value that is between the first and second values.

5 . The vehicle travel control apparatus of claim 2 , wherein the controller corrects the preceding vehicle acceleration/deceleration information based on the acceleration/deceleration state of the preceding vehicle and the inter-vehicle distance or the inter-vehicle time with respect to the preceding vehicle in such a manner that, when the acceleration/deceleration state of the preceding vehicle is a deceleration state, a response of acceleration/deceleration of the host vehicle to acceleration/deceleration of the preceding vehicle becomes worse in a case where the inter-vehicle distance or the inter-vehicle time is a fourth value than the response in a case where the inter-vehicle distance or the inter-vehicle time is a fifth value that is smaller than the fourth value.

6 . The vehicle travel control apparatus of claim 2 , wherein the controller corrects the preceding vehicle acceleration/deceleration information based on the acceleration/deceleration state of the preceding vehicle and the vehicle speed of the host vehicle in such a manner that, when the acceleration/deceleration state of the preceding vehicle is a deceleration state, a response of acceleration/deceleration of the host vehicle to acceleration/deceleration of the preceding vehicle becomes worse in a case where the vehicle speed of the host vehicle is a first vehicle speed than the response in a case where the vehicle speed of the host vehicle is a second vehicle speed that is higher than the first vehicle speed.

7 . The vehicle travel control apparatus of claim 2 , wherein the controller corrects the preceding vehicle acceleration/deceleration information based on the acceleration/deceleration state of the preceding vehicle and the vehicle speed of the host vehicle in such a manner that, when the acceleration/deceleration state of the preceding vehicle is an acceleration state, a response of acceleration/deceleration of the host vehicle to acceleration/deceleration of the preceding vehicle becomes worse in a case where the vehicle speed of the host vehicle is within a high-speed range that is higher than a predetermined vehicle speed than the response in a case where the vehicle speed of the host vehicle is lower than the high-speed range.

8 . The vehicle travel control apparatus of claim 3 , wherein the preceding vehicle acceleration/deceleration information includes target acceleration/deceleration of the preceding vehicle,
the second target value is generated by multiplying the target acceleration/deceleration of the preceding vehicle by a predetermined coefficient, and correcting the preceding vehicle acceleration/deceleration information in such a manner that the response of acceleration/deceleration of the host vehicle to acceleration/deceleration of the preceding vehicle becomes worse includes making a value of the predetermined coefficient smaller.

9 . The vehicle travel control apparatus of claim 1 , wherein the preceding vehicle acceleration/deceleration information includes target acceleration/deceleration of the preceding vehicle,
the controller controls the acceleration/deceleration of the host vehicle based on a third target value that corresponds to a sum of the first target value and the second target value, and the controller corrects the second target value in such a manner that magnitude of the acceleration/deceleration corresponding to the third target value does not exceed magnitude of target acceleration/deceleration of the preceding vehicle by a predetermined value.

10 . The vehicle travel control apparatus of claim 9 , wherein, when the acceleration/deceleration state of the preceding vehicle is an acceleration state, the controller corrects the second target value to a median value among three values, the three values including 0; a value obtained by adding the predetermined value to the target acceleration/deceleration of the preceding vehicle and subtracting the acceleration/deceleration corresponding to the first target value from the added value; and the second target value.

11 . The vehicle travel control apparatus of claim 9 , wherein, when the acceleration/deceleration state of the preceding vehicle is a deceleration state, the controller corrects the second target value to a median value among three values, the three values including 0; a value obtained by subtracting the predetermined value from the target acceleration/deceleration of the preceding vehicle and further subtracting the acceleration/deceleration corresponding to the first target value from the subtracted value; and the second target value.

12 . The vehicle travel control apparatus of claim 3 , wherein the manner in which the response of acceleration/deceleration of the host vehicle to acceleration/deceleration of the preceding vehicle becomes worse corresponds to a manner in which the host vehicle starts to accelerate with the acceleration whose magnitude is less than that of the preceding vehicle when the preceding vehicle accelerates under a situation where the preceding vehi

Assignees

• Toyota Motor Co Ltd

Inventors

• Nemoto Yusuke

Classifications

• B60W2554/4041

  Position · CPC title

• B60W2554/80

  Spatial relation or speed relative to objects · CPC title

• B60W2556/65

  Data transmitted between vehicles · CPC title

• B60W2554/804

  Relative longitudinal speed · CPC title

• B60W2556/45

  External transmission of data to or from the vehicle · CPC title