ADAPTIVE VEHICLE CONTROL SYSTEM WITH DRIVING STYLE RECOGNITION BASED ON VEHICLE LEFT/RIGHT TURNS
First Claim
1. A method for identifying whether a vehicle maneuver is a left/right-turn maneuver, said method comprising:
- reading a vehicle speed signal and a vehicle yaw rate signal from vehicle sensors;
determining that the vehicle has started a turn if the yaw rate signal is greater than a first yaw rate threshold;
determining a vehicle heading angle based on the yaw rate signal and a sampling time if the vehicle has started a turn;
determining that the vehicle maneuver has been completed if the yaw rate signal is less than a second yaw rate threshold; and
determining that the completed maneuver was a left/right-turn maneuver if the vehicle yaw rate signal is less than a third yaw rate threshold during the maneuver, the vehicle heading angle at the end of the maneuver is within a heading angle range and the time duration of the maneuver is less than a predetermined time threshold.
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Accused Products
Abstract
An adaptive vehicle control system that classifies a driver'"'"'s driving style based on left/right-turn maneuvers. A process determines if the vehicle has started a turn if the yaw rate is greater than a first yaw rate threshold, and determines a vehicle heading angle based on the yaw rate and a sampling time if the vehicle has started a turn. The process then determines whether the vehicle maneuver has been completed by determining if the yaw rate is less than a second yaw rate threshold. The process then determines that the completed maneuver was a left/right-turn maneuver if the yaw rate is less than a third yaw rate threshold over the sampling time and the vehicle heading angle is within a heading angle range for a time period less than a predetermined time threshold. In one non-limiting embodiment, the heading angle range is between 75° and 105°.
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Citations
23 Claims
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1. A method for identifying whether a vehicle maneuver is a left/right-turn maneuver, said method comprising:
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reading a vehicle speed signal and a vehicle yaw rate signal from vehicle sensors; determining that the vehicle has started a turn if the yaw rate signal is greater than a first yaw rate threshold; determining a vehicle heading angle based on the yaw rate signal and a sampling time if the vehicle has started a turn; determining that the vehicle maneuver has been completed if the yaw rate signal is less than a second yaw rate threshold; and determining that the completed maneuver was a left/right-turn maneuver if the vehicle yaw rate signal is less than a third yaw rate threshold during the maneuver, the vehicle heading angle at the end of the maneuver is within a heading angle range and the time duration of the maneuver is less than a predetermined time threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for identifying whether a vehicle maneuver is a left/right-turn maneuver, said method comprising:
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reading a vehicle speed signal and a vehicle yaw rate signal from vehicle sensors; determining that the vehicle has started a turn if the yaw rate signal is greater than a first yaw rate threshold; determining a vehicle heading angle based on the yaw rate signal and a sampling time if the vehicle has started a turn; determining that the vehicle maneuver has been completed if the yaw rate signal is less than a second yaw rate threshold; updating the heading angle if the vehicle is still in the maneuver because the yaw rate signal is not less than the second yaw rate threshold; determining that the completed maneuver was a left/right-turn maneuver if the vehicle yaw rate signal is less than a third yaw rate threshold during the maneuver, the vehicle heading angle at the end of the maneuver is within a heading angle range and the time duration of the maneuver is less than a predetermined time threshold; and classifying the left/right-turn maneuver using selected discriminant features obtained or derived from the left/right-turn maneuver. - View Dependent Claims (13, 14, 15, 16)
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17. A system for identifying whether a vehicle maneuver is a left/right-turn maneuver, said system comprising:
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a plurality of vehicle sensors providing a vehicle speed signal and a vehicle yaw rate signal; means for determining that the vehicle has started a turn if the yaw rate signal is greater than a first yaw rate threshold; means for determining a vehicle heading angle based on the yaw rate signal and a sampling time if the vehicle has started a turn; means for determining that the vehicle maneuver has been completed if the yaw rate signal is less than a second yaw rate threshold; and means for determining that the completed maneuver was a left/right-turn maneuver if the vehicle yaw rate signal is less than a third yaw rate threshold during the maneuver, the vehicle heading angle at the end of the maneuver is within a heading angle range and the time duration of the maneuver is less than a predetermined time threshold. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method for identifying a vehicle left/right-turn maneuver, said method comprising:
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providing a vehicle speed signal from a speed sensor; providing a vehicle yaw rate signal from a vehicle yaw rate sensor; providing a steering angle signal from a steering angle sensor; providing a heading angle signal from a heading angle sensor; providing a vehicle acceleration signal from an acceleration sensor; providing a vehicle position signal from a position sensor; and using the sensor signals to determine whether the vehicle is in the left/right-turn maneuver.
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Specification