SYSTEM AND METHOD FOR DETERMINING A STEERING ANGLE FOR A VEHICLE AND SYSTEM AND METHOD FOR CONTROLLING A VEHICLE BASED ON SAME
First Claim
1. A system for determining an angular position of a pair of steerable wheels of a vehicle having a plurality of wheels comprising:
- a yaw rate sensor configured to output data representative of an angular velocity of the vehicle about a vertical axis of the vehicle;
a pair of wheel speed sensors, wherein each wheel speed sensor is configured to output data representative of a rotational velocity of a respective one of the plurality of wheels; and
a controller in electrical communication with each of the pair of wheel speed sensors and the yaw rate sensor and configured to;
determine a first steering angle based on data received from the plurality of wheel speed sensors;
determine a second steering angle based on data received from the yaw rate sensor; and
select one of the first steering angle and the second steering angle.
1 Assignment
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Accused Products
Abstract
A system for determining an angular position of a pair of steerable wheels of a vehicle having a plurality of wheels can include a yaw rate sensor, a pair of wheel speed sensors and a controller. The yaw rate sensor can be configured to output data representative of an angular velocity of the vehicle about a vertical axis of the vehicle. Each of the pair of wheel speed sensors can be configured to output data representative of a rotational velocity of a respective one of the plurality of wheels. The controller can be in electrical communication with each of the pair of wheel speed sensors and the yaw rate sensor. The controller can be configured to determine a first steering angle based on data received from the yaw rate sensor, to determine a second steering angle based on data received from the plurality of wheel speed sensors, and to select one of the first steering angle and the second steering angle for use in manipulating various vehicle parameters, including torque vectoring parameters, among other parameters.
73 Citations
24 Claims
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1. A system for determining an angular position of a pair of steerable wheels of a vehicle having a plurality of wheels comprising:
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a yaw rate sensor configured to output data representative of an angular velocity of the vehicle about a vertical axis of the vehicle; a pair of wheel speed sensors, wherein each wheel speed sensor is configured to output data representative of a rotational velocity of a respective one of the plurality of wheels; and a controller in electrical communication with each of the pair of wheel speed sensors and the yaw rate sensor and configured to; determine a first steering angle based on data received from the plurality of wheel speed sensors; determine a second steering angle based on data received from the yaw rate sensor; and select one of the first steering angle and the second steering angle. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for determining a steering angle of a pair of steerable wheels of a vehicle having a plurality of wheels comprising:
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determining a first steering angle based on rotational velocity data of the plurality of wheels; determining a second steering angle based on a yaw rate of the vehicle; and selecting one of the first steering angle and the second steering angle. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A control system for an all-wheel drive powertrain of a vehicle having a power source configured to produce torque, a steerable pair of wheels configured to be driven by the torque, and a second pair of wheels configured to be selectively driven by the torque, the control system comprising:
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a first clutch assembly selectively connecting a first wheel of the second pair of wheels to the power source; and a second clutch assembly selectively connecting a second wheel of the second pair of wheels to the power source; a yaw rate sensor configured to output data representative of an angular velocity of the vehicle about a vertical axis of the vehicle; a pair of wheel speed sensors, wherein each wheel speed sensor is configured to output data representative of a rotational velocity of a respective one of the second pair of wheels; and a controller in electrical communication with each of the plurality of wheel speed sensors and the yaw rate sensor and configured to, determine a first steering angle based on data received from the plurality of wheel speed sensors; determine a second steering angle based on data received from the yaw rate sensor; select one of the first steering angle and the second steering angle; and modulate the clutch assemblies based on the selected one of the first steering angle and the second steering angle to vary transmission of torque from the power source to the second pair of wheels. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A method for controlling an on-demand all-wheel drive system of a vehicle to supplement an operator'"'"'s input to the vehicle comprising:
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providing a power source, a pair of steerable wheels driven by the power source, a pair of rear wheels selectively driven by the power source, a pair of rear clutch assemblies selectively connecting a respective one of the pair of rear wheels to the power source, a yaw rate sensor configured to output data representative of an angular velocity of the vehicle about a vertical axis of the vehicle, and a pair of wheel speed sensors configured to output data representative of a rotational speed of a respective one of the pair of rear wheels; determining a first steering angle based on the rotational speed data; determining a second steering angle based on the data from the yaw rate sensor; and selecting one of the first steering angle and the second steering angle. - View Dependent Claims (21, 22, 23, 24)
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Specification