Anti-lock brake control system having enhanced straightline braking efficiency
First Claim
1. An anti-lock brake control system for a vehicle having a wheel and a brake for applying braking force to the wheel in response to an operator brake command input, said brake control system comprising:
- an operator input for commanding vehicle braking;
a brake actuator for applying braking force to the wheel in response to the operator input;
a steering angle sensor for sensing a steering angle of the vehicle;
a wheel speed sensor for sensing rotational speed of said wheel; and
a controller for controlling the amount of braking force applied by the brake actuator in accordance with a tire slip as determined by the sensed wheel speed, said controller determining the tire slip during braking and increasing the tire slip to increase vehicle braking when said vehicle is commanded to travel in a substantially straight line.
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Accused Products
Abstract
An anti-lock brake control system 12 for a vehicle 10 that enhances vehicle braking when the vehicle is commanded to travel in a substantially straight trajectory. The brake control system 12 has an operator input 18 for commanding vehicle braking, and brake actuators 20A-20C for applying braking force to wheels 14A-14D in response to the operator input. In addition, the brake control system includes a steering angle sensor 34 for sensing a steering angle of the vehicle, and a wheel speed sensors 36 for sensing rotational speed of the wheels. Further, the brake control system 12 includes a controller 22 for controlling the amount of braking by the brake actuators 20A-20C in accordance with a tire slip as determined by the wheel speed. The controller 22 determines the amount of tire slip during braking and increases the amount of tire slip to increase vehicle braking when the vehicle 10 is commanded to travel in a substantially straightline trajectory.
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Citations
19 Claims
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1. An anti-lock brake control system for a vehicle having a wheel and a brake for applying braking force to the wheel in response to an operator brake command input, said brake control system comprising:
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an operator input for commanding vehicle braking;
a brake actuator for applying braking force to the wheel in response to the operator input;
a steering angle sensor for sensing a steering angle of the vehicle;
a wheel speed sensor for sensing rotational speed of said wheel; and
a controller for controlling the amount of braking force applied by the brake actuator in accordance with a tire slip as determined by the sensed wheel speed, said controller determining the tire slip during braking and increasing the tire slip to increase vehicle braking when said vehicle is commanded to travel in a substantially straight line. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An anti-lock brake control system for a vehicle having a wheel and a brake actuator for applying braking force to the wheel in response to an operator brake command input, said brake control system comprising:
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a steering angle sensor for sensing a steering angle of the vehicle;
a wheel speed sensor for sensing rotational speed of said wheel; and
a controller for controlling the amount of braking force applied by the brake actuator in accordance with a tire slip as determined by said sensed wheel speed, said controller increasing the tire slip to increase vehicle braking when said vehicle is commanded to travel in a substantially straight line. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for controlling an anti-lock brake system for a vehicle having a wheel and a brake for applying braking force to the wheel in response to an operator brake command input, said method comprising the steps of:
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sensing a steering angle of the vehicle;
sensing rotational speed of said wheel;
sensing an operator input for commanding vehicle braking;
applying braking force to said wheel in response to said operator input;
determining a tire slip based on said sensed wheel speed during said vehicle braking force;
increasing the tire slip to increase vehicle braking when said vehicle is commanded to travel in a substantially straight line. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification