Enhanced system for yaw stability control system to include roll stability control function
First Claim
1. A control system for an automotive vehicle having a vehicle body comprising:
- a yaw rate sensor generating a roll 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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Accused Products
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
48 Claims
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1. A control system for an automotive vehicle having a vehicle body comprising:
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a yaw rate sensor generating a roll 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A control system for an automotive vehicle having a vehicle body comprising:
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a yaw stability control unit generating a yaw stability control signal; a roll stability control unit a roll stability control signal; 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. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. 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