Turn control apparatus for a vehicle
First Claim
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1. A turn control apparatus for a vehicle, comprising:
- a critical braking detection unit which detects braking of the vehicle to a critical extent by a brake pedal;
a first selection unit which selects two target wheels to be controlled as first target wheels according to a turning condition of the vehicle when the vehicle turns while being braked;
a first braking control unit which controls a turn behavior of the vehicle by increasing the braking force of one first target wheel and decreasing the braking force of the other first target wheel, thereby giving one of turning and restoration moments to the vehicle;
a second selecting unit which selects one wheel as a second target wheel from the wheels other than the first target wheels according to a vehicle turn direction when the vehicle is being braked by the brake pedal according to the critical extent and when the vehicle turns; and
a second braking control unit which decreases the braking force of the second target wheel when braking forces of the first target wheels are being controlled by said first braking control unit.
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Abstract
A turn control apparatus for a vehicle selects two wheels on the diagonal line of the vehicle as first target wheels according to a turning condition when the vehicle turns while being braked, increases and decreases the braking force of these first target wheels, and executes yaw moment control of the vehicle. In the execution of the yaw moment control, when an antiskid brake system is activated, the turn control apparatus selects one wheel other than the first target wheels as a second target wheel, reduces the braking force of the second target wheel, gives a restoration moment to the vehicle, and prevent the locking of the second target wheel.
24 Citations
10 Claims
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1. A turn control apparatus for a vehicle, comprising:
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a critical braking detection unit which detects braking of the vehicle to a critical extent by a brake pedal; a first selection unit which selects two target wheels to be controlled as first target wheels according to a turning condition of the vehicle when the vehicle turns while being braked; a first braking control unit which controls a turn behavior of the vehicle by increasing the braking force of one first target wheel and decreasing the braking force of the other first target wheel, thereby giving one of turning and restoration moments to the vehicle; a second selecting unit which selects one wheel as a second target wheel from the wheels other than the first target wheels according to a vehicle turn direction when the vehicle is being braked by the brake pedal according to the critical extent and when the vehicle turns; and a second braking control unit which decreases the braking force of the second target wheel when braking forces of the first target wheels are being controlled by said first braking control unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for controlling turning characteristics of a vehicle, comprising:
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detecting braking of the vehicle by a brake pedal; selecting two target wheels as first target wheels according to a turn condition of the vehicle when the vehicle is turning while the brakes are being operated by the brake pedal; controlling braking forces of the first target wheels such that one of increasing and decreasing turning moments is applied to the vehicle; detecting braking of the vehicle by the brake pedal to a critical extent; selecting one wheel other than the first target wheels as a second target wheel according to the turn condition of the vehicle when the vehicle is being braked by the brake pedal to the critical extent; and decreasing a brake force of the second target wheel when the braking forces of the first target wheels are being controlled.
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Specification