Adaptive cruise control apparatus
First Claim
1. A cruise control apparatus comprising:
- a current speed detector configured to detect a current speed of a vehicle;
a target speed setting unit configured to set a target speed of the vehicle;
an acceleration and deceleration operation amount acquisition unit configured to acquire an operation amount of acceleration or deceleration of the vehicle by a driver; and
a cruise controller configured to perform cruise control of the vehicle so that the current speed follows the target speed,wherein the target speed setting unit monitors i) the operation amount acquired by the acceleration and deceleration operation amount acquisition unit or ii) change in the current speed detected by the current speed detector to perform a first determination of if the driver intends to maintain the vehicle speed at an intended speed different from the target speed, and if the first determination is affirmative, automatically updates the target speed to the intended vehicle speed,wherein the target speed setting unit decides the first determination is affirmative if a constant stable speed driving interval condition is satisfied,wherein the constant stable speed driving interval condition is satisfied if (i) is met;
(i) a second determination and a third determination are both affirmative,wherein the second determination determines if an absolute value of a difference between the target speed and the current speed detected by the current speed detector exceeds a predetermined threshold value and the third determination determines if a change in the vehicle speed is maintained in a predetermined range for more than a predetermined time interval after the absolute value exceeding the threshold.
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Accused Products
Abstract
A cruise control apparatus includes a current speed detector detects a current speed of a vehicle; a target speed setting unit sets a target speed of the vehicle; an acceleration and deceleration operation amount acquisition unit acquires an operation amount of acceleration or deceleration of the vehicle by a driver; and a cruise controller performs cruise control of the vehicle so that the current speed follows the target speed. The target speed setting unit monitors i) the operation amount or ii) change in the current speed detected by the current speed detector to performs a first determination of if the driver intends to maintain the vehicle speed at an intended speed different from the target speed, and if the first determination is positive, updates the target speed to the intended vehicle speed.
8 Citations
10 Claims
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1. A cruise control apparatus comprising:
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a current speed detector configured to detect a current speed of a vehicle; a target speed setting unit configured to set a target speed of the vehicle; an acceleration and deceleration operation amount acquisition unit configured to acquire an operation amount of acceleration or deceleration of the vehicle by a driver; and a cruise controller configured to perform cruise control of the vehicle so that the current speed follows the target speed, wherein the target speed setting unit monitors i) the operation amount acquired by the acceleration and deceleration operation amount acquisition unit or ii) change in the current speed detected by the current speed detector to perform a first determination of if the driver intends to maintain the vehicle speed at an intended speed different from the target speed, and if the first determination is affirmative, automatically updates the target speed to the intended vehicle speed, wherein the target speed setting unit decides the first determination is affirmative if a constant stable speed driving interval condition is satisfied, wherein the constant stable speed driving interval condition is satisfied if (i) is met; (i) a second determination and a third determination are both affirmative, wherein the second determination determines if an absolute value of a difference between the target speed and the current speed detected by the current speed detector exceeds a predetermined threshold value and the third determination determines if a change in the vehicle speed is maintained in a predetermined range for more than a predetermined time interval after the absolute value exceeding the threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A cruise control method comprising:
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a target speed setting step of setting a target speed of a vehicle; a current speed detecting step of detecting a current speed of the vehicle; an acceleration and deceleration operation amount acquisition step of acquiring an operation amount of acceleration or deceleration of the vehicle by a driver; a target speed update step of monitoring, by using a processor, i) the operation amount acquired by the acceleration and deceleration operation amount acquisition step or ii) change in the current speed detected by the current speed detecting step to perform a first determination of if the driver intends to maintain the vehicle speed at an intended speed different from the target speed, and if the first determination is affirmative, automatically update the target speed to the intended vehicle speed, wherein the first determination is affirmative if a constant stable speed driving interval condition is satisfied, wherein the constant stable speed driving interval condition is satisfied if (i) is met; (i) a second determination and a third determination are both affirmative, wherein the second determination determines if an absolute value of a difference between the target speed and the detected current speed exceeds a predetermined threshold value and the third determination determines if a change in the vehicle speed is maintained in a predetermined range for more than a predetermined time interval after the absolute value exceeding the threshold.
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10. A non-transitory computer readable medium storing a program to cause a computer to execute a process comprising:
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a target speed setting step of setting a target speed of a vehicle; a current speed detecting step of detecting a current speed of the vehicle; an acceleration and deceleration operation amount acquisition step of acquiring an operation amount of acceleration or deceleration of the vehicle by a driver; a target speed update step of monitoring i) the operation amount acquired by the acceleration and deceleration operation amount acquisition step or ii) change in the current speed detected by the current speed detecting step to perform a first determination of if the driver intends to maintain the vehicle speed at an intended speed different from the target speed, and if the first determination is affirmative, automatically update the target speed to the intended vehicle speed, wherein the first determination is affirmative if a constant stable speed driving interval condition is satisfied, wherein the constant stable speed driving interval condition is satisfied if (i) is met; (i) a second determination and a third determination are both affirmative, wherein the second determination determines if an absolute value of a difference between the target speed and the detected current speed exceeds a predetermined threshold value and the third determination determines if a change in the vehicle speed is maintained in a predetermined range for more than a predetermined time interval after the absolute value exceeding the threshold.
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Specification