Method for determining a longitudinal vehicle velocity by compensating individual wheel speeds
First Claim
1. A control system for controlling a safety system of an automotive vehicle comprising:
- a plurality of wheel speed sensors generating a plurality of wheel velocity signals;
a steering angle sensor generating a steering actuator angle signal;
a yaw rate sensor generating a yaw rate signal;
a lateral acceleration sensor generating a lateral acceleration signal; and
a controller coupled to the plurality of wheel speed sensors, the steering actuator angle sensor, the yaw rate sensor, the lateral acceleration sensor, said controller generating a final reference vehicle velocity in response to the plurality of wheel velocity signals, the steering angle signal, the yaw rate signal and the lateral acceleration signal, said controller controlling the safety system in response to the final reference vehicle velocity.
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Accused Products
Abstract
A control system (24) for controlling a safety system (40) of an automotive vehicle includes a plurality of wheel speed sensors (30) generating a plurality of wheel velocity signals, a steering angle sensor (39) generating a steering actuator angle signal, a yaw rate sensor (28) generating a yaw rate signal, a lateral acceleration sensor (32) generating a lateral acceleration signal and a controller (26). The controller (26) generates a final reference vehicle velocity in response to the plurality of wheel speed signals, the steering angle signal, the yaw rate signal and the lateral acceleration signal. The controller (26) controls the safety system in response to the final reference vehicle velocity.
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Citations
21 Claims
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1. A control system for controlling a safety system of an automotive vehicle comprising:
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a plurality of wheel speed sensors generating a plurality of wheel velocity signals;
a steering angle sensor generating a steering actuator angle signal;
a yaw rate sensor generating a yaw rate signal;
a lateral acceleration sensor generating a lateral acceleration signal; and
a controller coupled to the plurality of wheel speed sensors, the steering actuator angle sensor, the yaw rate sensor, the lateral acceleration sensor, said controller generating a final reference vehicle velocity in response to the plurality of wheel velocity signals, the steering angle signal, the yaw rate signal and the lateral acceleration signal, said controller controlling the safety system in response to the final reference vehicle velocity. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12)
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6. A control system for an automotive vehicle comprising:
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a plurality of wheel speed sensors generating a plurality of wheel velocity signals;
a lateral acceleration sensor generating a lateral acceleration signal;
a safety system; and
a controller coupled to the plurality of wheel speed sensors, the lateral acceleration sensor and the safety system, said controller determining a preliminary longitudinal velocity of the vehicle from the plurality of wheel velocity signals, determining a plurality of correction factors for the plurality of wheel velocity signals, determining a vehicle reference velocity in response to the plurality of correction factors, the plurality of wheel velocities and the preliminary longitudinal velocity, determining a vehicle reference velocity correction factor in response to the lateral acceleration, determining a final reference velocity in response to the velocity correction factor and the vehicle reference velocity, said controller controlling the safety system in response to the final reference vehicle velocity.
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13. A method of controlling a safety system for an automotive vehicle having a plurality of wheels comprising:
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determining a plurality of wheel velocities for the plurality of wheels;
determining a preliminary longitudinal velocity of the vehicle from the plurality of wheel velocities;
determining a plurality of correction factors for the plurality of wheel velocities for the plurality of wheels;
determining a vehicle reference velocity in response to the plurality of correction factors, the plurality of wheel velocities and the preliminary longitudinal velocity;
determining a lateral acceleration;
determining a vehicle reference velocity correction factor in response to the lateral acceleration;
determining a final reference velocity in response to the vehicle reference velocity correction factor and the vehicle reference velocity; and
controlling the safety system in response to the final reference velocity. - View Dependent Claims (14, 15, 16, 17)
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18. A method of controlling a safety system for an automotive vehicle having a plurality of wheels comprising:
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determining a plurality of wheel velocities for the plurality of wheels;
determining a yaw rate;
determining a preliminary longitudinal velocity of the vehicle from the plurality of wheel velocities and the yaw rate;
determining a front steering angle;
determining a plurality of correction factors for the plurality of preliminary wheel speeds in response to the front steering angle;
determining a vehicle reference velocity in response to the plurality of correction factors and the plurality of correction factors and the preliminary longitudinal velocity. - View Dependent Claims (19, 20, 21)
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Specification