Apparatus and method for automatically controlling vehicular velocity of vehicle
First Claim
1. An apparatus for automatically controlling a vehicular velocity for a vehicle, comprising:
- an inter-vehicle distance detector to detect an inter-vehicle distance of the vehicle to a preceding vehicle which is running ahead of the vehicle;
a target vehicular velocity variation rate calculating section that calculates a target vehicular velocity variation rate to make the detected inter-vehicle distance substantially equal to a target inter-vehicle distance;
a vehicular run controlling section that is enabled to perform a vehicular run control to maintain the target vehicular velocity variation rate;
a release condition detector to detect whether a release condition of the vehicular run control by the vehicular run controlling section is established; and
a vehicular run control releasing section that releases the vehicular run control at a time at which a vehicular deceleration control is completed, on condition that the vehicular run controlling section is detected to be performing the vehicular deceleration control and the release condition detector detects that the release condition is established.
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Accused Products
Abstract
In apparatus and method for automatically controlling a vehicular velocity of an automotive vehicle maintaining an inter-vehicle distance to a preceding vehicle, a release of a follow-up run control (a vehicular run control) to control the vehicular velocity to follow up the preceding vehicle is smoothly carried out when a follow-up run release condition such that when the vehicle is running with a braking control executed on a road surface having a low frictional coefficient such as a wet road or snowy road. For example, when the vehicle is running under a follow-up run control to follow up the preceding vehicle and the release condition of the follow-up run control is established, a controller determines if the vehicle is under the braking control execution. If the vehicle is under the braking control, the follow-up run control is continued. Upon the end of the braking control, a follow-up run release flag FF is set to “1” and the follow-up run control is released. The release of the follow-up run control may be carried out after a predetermined interval of time has passed from a time at which the braking control is ended or may be carried out after the braking pressure is gradually reduced during the braking control.
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Citations
23 Claims
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1. An apparatus for automatically controlling a vehicular velocity for a vehicle, comprising:
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an inter-vehicle distance detector to detect an inter-vehicle distance of the vehicle to a preceding vehicle which is running ahead of the vehicle;
a target vehicular velocity variation rate calculating section that calculates a target vehicular velocity variation rate to make the detected inter-vehicle distance substantially equal to a target inter-vehicle distance;
a vehicular run controlling section that is enabled to perform a vehicular run control to maintain the target vehicular velocity variation rate;
a release condition detector to detect whether a release condition of the vehicular run control by the vehicular run controlling section is established; and
a vehicular run control releasing section that releases the vehicular run control at a time at which a vehicular deceleration control is completed, on condition that the vehicular run controlling section is detected to be performing the vehicular deceleration control and the release condition detector detects that the release condition is established. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for automatically controlling a vehicular velocity for a vehicle, comprising:
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inter-vehicle distance detecting means for detecting an inter-vehicle distance of the vehicle to a preceding vehicle which is running ahead of the vehicle;
target vehicular velocity variation rate calculating means for calculating a target vehicular velocity variation rate to make the detected inter-vehicle distance substantially equal to a target inter-vehicle distance;
vehicular run controlling means for performing a vehicular run control to maintain the target vehicular velocity variation rate;
release condition detecting means for detecting whether a release condition of the vehicular run control by the vehicular run controlling means is established; and
vehicular run control releasing means for releasing the vehicular run control at a time at which a vehicular deceleration control is completed, on condition that the vehicular run controlling means is detected to be performing the vehicular deceleration control and the release condition detecting means detects that the release condition is established.
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20. A method for automatically controlling a vehicular velocity for a vehicle, comprising:
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detecting an inter-vehicle distance of the vehicle to a preceding vehicle which is running ahead of the vehicle;
calculating a target vehicular velocity variation rate to make the detected inter-vehicle distance substantially equal to a target inter-vehicle distance;
performing a vehicular run control to maintain the target vehicular velocity variation rate;
detecting whether a release condition of the vehicular run control is established; and
releasing the vehicular run control at a time at which a vehicular deceleration control to perform the vehicular run control is completed, on condition that the vehicular deceleration control is being performed and the release condition is established.
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21. An apparatus for automatically controlling a vehicular velocity for a vehicle, comprising:
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an inter-vehicle distance detector to detect an inter-vehicle distance of the vehicle to a preceding vehicle which is running ahead of the vehicle;
a target vehicular velocity variation rate calculating section that calculates a target vehicular velocity variation rate to make the detected inter-vehicle distance substantially equal to a target inter-vehicle distance;
a vehicular run controlling section that is enabled to perform a vehicular run control to maintain the target vehicular velocity variation rate;
a release condition detector to detect whether a release condition of the vehicular run control by the vehicular run controlling section is established;
a vehicular deceleration control detector to detect whether a deceleration control by the vehicular run control is executed; and
a vehicular run control releasing section that releases the vehicular run control gradually when the release condition of the vehicular run control is detected on condition that the vehicular deceleration control is being executed.
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22. An apparatus for automatically controlling a vehicular velocity for a vehicle, comprising:
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inter-vehicle distance detecting means for detecting an inter-vehicle distance of the vehicle to a preceding vehicle which is running ahead of the vehicle;
target vehicular velocity variation rate calculating means for calculating a target vehicular velocity variation rate to make the detected inter-vehicle distance substantially equal to a target inter-vehicle distance;
vehicular run controlling means for performing a vehicular run control to maintain the target vehicular velocity variation rate;
release condition detecting means for detecting whether a release condition of the vehicular run control by the vehicular run controlling means is established;
vehicular deceleration control detection means for detecting whether a deceleration control by the vehicular run control is executed; and
vehicular run control releasing means for releasing the vehicular run control gradually when the release condition of the vehicular run control is detected on condition that the vehicular deceleration control is being executed.
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23. A method for automatically controlling a vehicular velocity for a vehicle, comprising:
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detecting an inter-vehicle distance of the vehicle to a preceding vehicle which is running ahead of the vehicle;
calculating a target vehicular velocity variation rate to make the detected inter-vehicle distance substantially equal to a target inter-vehicle distance;
performing a vehicular run control to maintain the target vehicular velocity variation rate;
detecting whether a release condition of the vehicular run control is established;
detecting whether a deceleration control by the vehicular run control is executed; and
releasing the vehicular run control gradually when the release condition of the vehicular run control is detected on condition that the vehicular deceleration control is being executed.
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Specification