Vehicle acceleration and deceleration control device
First Claim
1. A vehicle control device for a vehicle, the vehicle control device comprising:
- a brake of the vehicle;
an engine of the vehicle; and
a vehicle acceleration/deceleration controller that controls an acceleration and deceleration of the vehicle in a direction of travel of the vehicle from entry of the vehicle into a curve to exit of the vehicle from the curve, the vehicle acceleration/deceleration controller comprising;
a curve shape information obtaining unit configured to obtain shape information including a radius of curvature of the curve in front of the vehicle;
a target acceleration/deceleration setting unit configured to set target accelerations and decelerations of the vehicle in the direction of travel of the vehicle between a location at which the curve starts and a location at which the curve ends; and
an acceleration/deceleration control unit configured to, when the vehicle travels from the location at which the curve starts to the location at which the curve ends, control the acceleration and deceleration of the vehicle in the direction of travel of the vehicle in accordance with the target accelerations and decelerations set by the target acceleration/deceleration setting unit, whereinthe acceleration/deceleration control unit controls the brake and the engine,the target acceleration/deceleration setting unitsets one of the target accelerations and decelerations at the location at which the curve starts to be a predetermined maximum deceleration,sets another one of the target accelerations and decelerations at the location at which the curve ends to be a predetermined maximum acceleration,sets still another one of the target accelerations and decelerations at a predetermined intermediate location between the location at which the curve starts and the location at which the curve ends to be zero,sets a target deceleration D (Ld) at a location to which a travelling distance from the location at which the curve starts is Ld between the location at which the curve starts and the predetermined intermediate location to satisfy a following expression (1);
Dmax·
(1−
Ld/L1)≤
D(Ld)≤
Dmax·
cos(π
Ld/2L1)where Dmax represents the predetermined maximum deceleration, and L1 represents a travelling distance between the location at which the curve starts and the predetermined intermediate location, andsets a target acceleration A (La) at a location to which a travelling distance from the predetermined intermediate location is La between the predetermined intermediate location and the location at which the curve ends to satisfy a following expression (2);
Amax·
La/L2≤
A(La)≤
Amax·
sin(π
La/2L2)where Amax represents the predetermined maximum acceleration, and L2 represents a travelling distance between the predetermined intermediate location and the location at which the curve ends.
1 Assignment
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Accused Products
Abstract
A target acceleration/deceleration setting unit (28) of a vehicle acceleration/deceleration controller (16) sets a target acceleration or deceleration at a location at which a curve starts to be a predetermined maximum deceleration, sets a target acceleration or deceleration at a location at which the curve ends to be a predetermined maximum acceleration, sets a target acceleration or deceleration at a predetermined intermediate location between the location at which the curve starts and the location at which the curve ends to be zero, and sets a target deceleration D (Ld) at a location to which the travelling distance from the location at which the curve starts is Ld and a target acceleration A (La) at a location to which the travelling distance from the predetermined intermediate location is La to satisfy respective predetermined relations.
13 Citations
19 Claims
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1. A vehicle control device for a vehicle, the vehicle control device comprising:
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a brake of the vehicle; an engine of the vehicle; and a vehicle acceleration/deceleration controller that controls an acceleration and deceleration of the vehicle in a direction of travel of the vehicle from entry of the vehicle into a curve to exit of the vehicle from the curve, the vehicle acceleration/deceleration controller comprising; a curve shape information obtaining unit configured to obtain shape information including a radius of curvature of the curve in front of the vehicle; a target acceleration/deceleration setting unit configured to set target accelerations and decelerations of the vehicle in the direction of travel of the vehicle between a location at which the curve starts and a location at which the curve ends; and an acceleration/deceleration control unit configured to, when the vehicle travels from the location at which the curve starts to the location at which the curve ends, control the acceleration and deceleration of the vehicle in the direction of travel of the vehicle in accordance with the target accelerations and decelerations set by the target acceleration/deceleration setting unit, wherein the acceleration/deceleration control unit controls the brake and the engine, the target acceleration/deceleration setting unit sets one of the target accelerations and decelerations at the location at which the curve starts to be a predetermined maximum deceleration, sets another one of the target accelerations and decelerations at the location at which the curve ends to be a predetermined maximum acceleration, sets still another one of the target accelerations and decelerations at a predetermined intermediate location between the location at which the curve starts and the location at which the curve ends to be zero, sets a target deceleration D (Ld) at a location to which a travelling distance from the location at which the curve starts is Ld between the location at which the curve starts and the predetermined intermediate location to satisfy a following expression (1);
Dmax·
(1−
Ld/L1)≤
D(Ld)≤
Dmax·
cos(π
Ld/2L1)where Dmax represents the predetermined maximum deceleration, and L1 represents a travelling distance between the location at which the curve starts and the predetermined intermediate location, and sets a target acceleration A (La) at a location to which a travelling distance from the predetermined intermediate location is La between the predetermined intermediate location and the location at which the curve ends to satisfy a following expression (2);
Amax·
La/L2≤
A(La)≤
Amax·
sin(π
La/2L2)where Amax represents the predetermined maximum acceleration, and L2 represents a travelling distance between the predetermined intermediate location and the location at which the curve ends. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle control device for a vehicle, the vehicle control device comprising:
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a brake of the vehicle; an engine of the vehicle; and a vehicle acceleration/deceleration controller that controls an acceleration and deceleration of the vehicle in a direction of travel of the vehicle from entry of the vehicle into a curve to exit of the vehicle from the curve, the vehicle acceleration/deceleration controller comprising; a curve shape information obtaining unit configured to obtain shape information including a radius of curvature of the curve in front of the vehicle; a target acceleration/deceleration setting unit configured to set target accelerations and decelerations of the vehicle in the direction of travel of the vehicle between a location at which the curve starts and a location at which the curve ends; an acceleration/deceleration control unit configured to, when the vehicle travels from the location at which the curve starts to the location at which the curve ends, control the acceleration and deceleration of the vehicle in the direction of travel of the vehicle in accordance with the target accelerations and decelerations set by the target acceleration/deceleration setting unit; and an occupant condition obtaining unit configured to obtain a condition of an occupant in the vehicle, wherein the acceleration/deceleration control unit controls the brake and the engine, the target acceleration/deceleration setting unit sets one of the target accelerations and decelerations at the location at which the curve starts to be a predetermined maximum deceleration, sets another one of the target accelerations and decelerations at the location at which the curve ends to be a predetermined maximum acceleration, sets still another one of the target accelerations and decelerations at a predetermined intermediate location between the location at which the curve starts and the location at which the curve ends to be zero, sets a target deceleration D (Ld) at a location to which a travelling distance from the location at which the curve starts is Ld between the location at which the curve starts and the predetermined intermediate location to satisfy a following expression (1);
Dmax·
(1−
Ld/L1)≤
D(Ld)≤
Dmax·
cos(π
Ld/2L1)where Dmax represents the predetermined maximum deceleration, and L1 represents a travelling distance between the location at which the curve starts and the predetermined intermediate location, sets a target acceleration A (La) at a location to which a travelling distance from the predetermined intermediate location is La between the predetermined intermediate location and the location at which the curve ends to satisfy a following expression (2);
Amax·
La/L2≤
A(La)≤
Amax·
sin(π
La/2L2)where Amax represents the predetermined maximum acceleration, and L2 represents a travelling distance between the predetermined intermediate location and the location at which the curve ends, and the target acceleration/deceleration setting unit sets the target deceleration D (Ld) within a range satisfying the expression (1) in accordance with the condition of the occupant in the vehicle obtained by the occupant condition obtaining unit, and sets the target acceleration A (La) within a range satisfying the expression (2) in accordance with the condition of the occupant in the vehicle obtained by the occupant condition obtaining unit. - View Dependent Claims (8, 9, 10)
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9. The vehicle control device of claim 7, wherein
the occupant condition obtaining unit is configured to obtain information for determining whether or not the occupant tends to perform quick operations as the condition of the occupant in the vehicle and determine whether or not the occupant tends to perform quick operations, based on the obtained information, and the target acceleration/deceleration setting unit is configured to, if the occupant condition obtaining unit determines that the occupant tends to perform quick operations, set the target deceleration D (Ld) and the target acceleration A (La) to be closer to Dmax· - cos(π
Ld/2L1) and Amax·
sin(π
La/2L2), respectively, than if the occupant condition obtaining unit determines that the occupant does not tend to perform quick operations.
- cos(π
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10. The vehicle control device of claim 9, further comprising
a storage unit configured to store accelerations applied to the vehicle by driving operations of the occupant, wherein the occupant condition obtaining unit is configured to obtain information on the accelerations applied to the vehicle by the occupant'"'"'s past driving operations stored in the storage unit and determine whether or not the occupant tends to perform quick operations, based on the obtained information on the acceleration.
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11. A vehicle control device for a vehicle, the vehicle control device comprising:
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a brake of the vehicle; an engine of the vehicle; and a vehicle acceleration/deceleration controller that controls an acceleration and deceleration of the vehicle in a direction of travel of the vehicle from entry of the vehicle into a curve to exit of the vehicle from the curve, the vehicle acceleration/deceleration controller comprising; a curve shape information obtaining unit configured to obtain shape information including a radius of curvature of the curve in front of the vehicle; a target acceleration/deceleration setting unit configured to set target accelerations and decelerations of the vehicle in the direction of travel of the vehicle between a location at which the curve starts and a location at which the curve ends; an acceleration/deceleration control unit configured to, when the vehicle travels from the location at which the curve starts to the location at which the curve ends, control the acceleration and deceleration of the vehicle in the direction of travel of the vehicle in accordance with the target accelerations and decelerations set by the target acceleration/deceleration setting unit; and a vehicle condition obtaining unit configured to obtain a condition of the vehicle, wherein the acceleration/deceleration control unit controls the brake and the engine, the target acceleration/deceleration setting unit sets one of the target accelerations and decelerations at the location at which the curve starts to be a predetermined maximum deceleration, sets another one of the target accelerations and decelerations at the location at which the curve ends to be a predetermined maximum acceleration, sets still another one of the target accelerations and decelerations at a predetermined intermediate location between the location at which the curve starts and the location at which the curve ends to be zero, sets a target deceleration D (Ld) at a location to which a travelling distance from the location at which the curve starts is Ld between the location at which the curve starts and the predetermined intermediate location to satisfy a following expression (1);
Dmax·
(1−
Ld/L1)≤
D(Ld)≤
Dmax·
cos(π
Ld/2L1)where Dmax represents the predetermined maximum deceleration, and L1 represents a travelling distance between the location at which the curve starts and the predetermined intermediate location, sets a target acceleration A (La) at a location to which a travelling distance from the predetermined intermediate location is La between the predetermined intermediate location and the location at which the curve ends to satisfy a following expression (2);
Amax·
La/L2≤
A(La)≤
Amax·
sin(π
La/2L2)where Amax represents the predetermined maximum acceleration, and L2 represents a travelling distance between the predetermined intermediate location and the location at which the curve ends, the target acceleration/deceleration setting unit sets the target deceleration D (Ld) within a range satisfying the expression (1) in accordance with the condition of the vehicle obtained by the vehicle condition obtaining unit, and sets the target acceleration A (La) within a range satisfying the expression (2) in accordance with the condition of the vehicle obtained by the vehicle condition obtaining unit, the vehicle condition obtaining unit is configured to obtain a parameter of the vehicle as the condition of the vehicle, and the target acceleration/deceleration setting unit is configured to set the target deceleration D (Ld) and the target acceleration A (La) such that the lower or higher the parameter obtained by the vehicle condition obtaining unit is, the closer to Dmax·
cos(π
Ld/2L1) the target deceleration D (Ld) is, and the closer to Amax·
sin(π
La/2L2) the target acceleration A (La) is.- View Dependent Claims (12, 13, 14)
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13. The vehicle control device of claim 11, wherein
the vehicle condition obtaining unit is configured to obtain the number of occupants riding in the vehicle as the condition of the vehicle, and the target acceleration/deceleration setting unit sets the target deceleration D (Ld) and the target acceleration A (La) such that the smaller the number of the occupants obtained by the vehicle condition obtaining unit is, the closer to Dmax· - cos(π
Ld/2L1) the target deceleration D (Ld) is, and the closer to Amax·
sin(π
La/2L2) the target acceleration A (La) is.
- cos(π
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14. The vehicle control device of claim 11, wherein
the vehicle condition obtaining unit is configured to obtain a weight of a load carried by the vehicle as the condition of the vehicle, and the target acceleration/deceleration setting unit is configured to set the target deceleration D (Ld) and the target acceleration A (La) such that the lower the weight of the load obtained by the vehicle condition obtaining unit is, the closer to Dmax· - cos(π
Ld/2L1) the target deceleration D (Ld) is, and the closer to Amax·
sin(π
La/2L2) the target acceleration A (La) is.
- cos(π
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15. A vehicle control device for a vehicle, the vehicle control device comprising:
-
a brake of the vehicle; an engine of the vehicle; and a vehicle acceleration/deceleration controller that controls an acceleration and deceleration of the vehicle in a direction of travel of the vehicle from entry of the vehicle into a curve to exit of the vehicle from the curve, the vehicle acceleration/deceleration controller comprising; a curve shape information obtaining unit configured to obtain shape information including a radius of curvature of the curve in front of the vehicle; a target acceleration/deceleration setting unit configured to set target accelerations and decelerations of the vehicle in the direction of travel of the vehicle between a location at which the curve starts and a location at which the curve ends; an acceleration/deceleration control unit configured to, when the vehicle travels from the location at which the curve starts to the location at which the curve ends, control the acceleration and deceleration of the vehicle in the direction of travel of the vehicle in accordance with the target accelerations and decelerations set by the target acceleration/deceleration setting unit; and a driving environment obtaining unit configured to obtain a driving environment of the vehicle, wherein the acceleration/deceleration control unit controls the brake and the engine, the target acceleration/deceleration setting unit sets one of the target accelerations and decelerations at the location at which the curve starts to be a predetermined maximum deceleration, sets another one of the target accelerations and decelerations at the location at which the curve ends to be a predetermined maximum acceleration, sets still another one of the target accelerations and decelerations at a predetermined intermediate location between the location at which the curve starts and the location at which the curve ends to be zero, sets a target deceleration D (Ld) at a location to which a travelling distance from the location at which the curve starts is Ld between the location at which the curve starts and the predetermined intermediate location to satisfy a following expression (1);
Dmax·
(1−
Ld/L1)≤
D(Ld)≤
Dmax·
cos(π
Ld/2L1)where Dmax represents the predetermined maximum deceleration, and L represents a travelling distance between the location at which the curve starts and the predetermined intermediate location, sets a target acceleration A (La) at a location to which a travelling distance from the predetermined intermediate location is La between the predetermined intermediate location and the location at which the curve ends to satisfy a following expression (2);
Amax·
La/L2≤
A(La)≤
Amax·
sin(π
La/2L2)where Amax represents the predetermined maximum acceleration, and L2 represents a travelling distance between the predetermined intermediate location and the location at which the curve ends, the target acceleration/deceleration setting unit is configured to set the target deceleration D (Ld) within a range satisfying the expression (1) in accordance with the driving environment of the vehicle obtained by the driving environment obtaining unit, and set the target acceleration A (La) within a range satisfying the expression (2) in accordance with the driving environment of the vehicle obtained by the driving environment obtaining unit, the driving environment obtaining unit is configured to obtain information for determining whether or not a parameter of the environment exists as the driving environment of the vehicle, and determine whether or not the parameter of the environment exists, based on the obtained information, and the target acceleration/deceleration setting unit is configured to, if the driving environment obtaining unit determines that a particular parameter of the environment exists, set the target deceleration D (Ld) and the target acceleration A (La) to be closer to Dmax·
cos(π
Ld/2L1) and Amax·
sin(π
La/2L2), respectively, than if the driving environment obtaining unit determines that the particular parameter of the environment does not exist.- View Dependent Claims (16, 17, 18, 19)
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17. The vehicle control device of claim 15, wherein
the driving environment obtaining unit is configured to obtain information for determining whether or not the curve has high visibility as the driving environment of the vehicle, and determine whether or not the curve has high visibility, based on the obtained information, and the target acceleration/deceleration setting unit is configured to, if the driving environment obtaining unit determines that the curve has high visibility, set the target deceleration D (Ld) and the target acceleration A (La) to be closer to Dmax· - cos(π
Ld/2L1) and Amax·
sin(π
La/2L2), respectively, than if the curve does not have high visibility.
- cos(π
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18. The vehicle control device of claim 15, wherein
the driving environment obtaining unit is configured to obtain information for determining whether or not a traffic density of the curve is high as the driving environment of the vehicle, and determine whether or not the traffic density of the curve is high, based on the obtained information, and the target acceleration/deceleration setting unit is configured to, if the driving environment obtaining unit determines that the traffic density of the curve is not high, set the target deceleration D (Ld) and the target acceleration A (La) to be closer to Dmax· - cos(π
Ld/2L1) and Amax·
sin(π
La/2L2), respectively, than if the driving environment obtaining unit determines that the traffic density is high.
- cos(π
-
19. The vehicle control device of claim 15, wherein
the driving environment obtaining unit is configured to obtain information for determining a condition of a road surface of the curve as the driving environment of the vehicle, and determine whether or not the road surface of the curve has a high friction coefficient, based on the obtained information, and the target acceleration/deceleration setting unit is configured to, if the driving environment obtaining unit determines that the road surface of the curve has a high friction coefficient, set the target deceleration D (Ld) and the target acceleration A (La) to be closer to Dmax· - cos(π
Ld/2L1) and Amax·
sin(π
La/2L2), respectively, than if the driving environment obtaining unit determines that the road surface of the curve does not have a high friction coefficient.
- cos(π
Specification