Enhanced system for yaw stability control system to include roll stability control function
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Abstract
A yaw stability control system (18) is enhanced to include roll stability control function for an automotive vehicle and includes a plurality of sensors (28-39) sensing the dynamic conditions of the vehicle. The sensors may include a speed sensor (20), a lateral acceleration sensor (32), a yaw rate sensor (28) and a longitudinal acceleration sensor (36). The controller (26) is coupled to the speed sensor (20), the lateral acceleration sensor (32), the yaw rate sensor (28) and a longitudinal acceleration sensor (36). The controller (26) generates both a yaw stability feedback control signal and a roll stability feedback control signal. The priority of achieving yaw stability control or roll stability control is determined through priority determination logic. If a potential rollover event is detected, the roll stability control will take the priority. The controller for roll stability control function determines a roll angle of the vehicle from the lateral acceleration sensor signal and calculates the feedback control signal based on the roll angle.
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Citations
62 Claims
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1-16. -16. (canceled)
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17. A method of controlling an automotive vehicle comprising:
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measuring a lateral acceleration of the vehicle body;
measuring the yaw rate of the vehicle body;
measuring a vehicle speed;
measuring a steering wheel angle position of a vehicle hand wheel;
determining a yaw control signal and a rollover control signal as a function of the lateral acceleration, the yaw rate, steering wheel angle and the vehicle speed. - View Dependent Claims (18, 19, 20, 21)
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22-52. -52. (canceled)
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53. A method of controlling an automotive vehicle comprising:
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determining a yaw control signal;
determining a roll stability control signal;
generating a safety system control signal as a function of the roll stability control signal and the yaw stability control signal; and
activating a safety device in response to said safety system control signal. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61)
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62. A control system for an automotive vehicle having a vehicle body comprising:
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a yaw rate sensor generating a yaw rate signal corresponding to a yawing angular motion of the vehicle body;
a lateral acceleration sensor generating a lateral acceleration signal corresponding to a lateral acceleration of a center of gravity of the vehicle body;
a steering angle sensor generating a steering angle signal corresponding to a hand wheel angle;
a plurality of wheel speed sensors generating wheel speed signals corresponding to each four wheel speed of the vehicle; and
a yaw stability control unit and a roll stability control unit coupled to said yaw rate sensor, said lateral acceleration sensor, said steering wheel angle sensor and said plurality of wheel speed sensors, said yaw control unit and said roll stability control unit determining a respective yaw stability control signal and a roll stability control signal from the yaw angular rate signal, the lateral acceleration signal, the steering wheel angle signal, and the wheel speed signals; and
an integration unit coupled to the yaw stability control unit and the roll stability control unit, said integration unit determining a safety system control signal in response to the yaw stability control signal and the roll stability control signal.
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Specification