System for dynamically determining the wheel grounding and wheel lifting conditions and their applications in roll stability control
First Claim
1. A method for controlling an automotive vehicle having a plurality of wheels comprising:
- determining a yaw rate;
determining a lateral acceleration;
determining a roll rate;
determining longitudinal acceleration;
determining a calculated angle relative to the vehicle;
generating a wheel lift signal or a wheel grounded signal as a function of yaw rate, lateral acceleration, roll rate and longitudinal acceleration;
adjusting the calculated angle in response to the wheel lift or wheel grounded signal; and
controlling a safety system in response to the calculated vehicle angle.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for controlling an automotive vehicle (10) having a plurality of wheels (12a), (12b), (13a), (13b) includes determining a yaw rate, determining a lateral acceleration, determining a roll rate, determining longitudinal acceleration; and determining a calculated angle relative to the vehicle. The method further includes generating a wheel lift signal or a wheel grounded signal as a function of yaw rate, lateral acceleration, roll rate and longitudinal acceleration, adjusting the calculated angle in response to the wheel lift or wheel grounded signal, and controlling a safety system in response to the calculated vehicle angle.
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Citations
33 Claims
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1. A method for controlling an automotive vehicle having a plurality of wheels comprising:
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determining a yaw rate;
determining a lateral acceleration;
determining a roll rate;
determining longitudinal acceleration;
determining a calculated angle relative to the vehicle;
generating a wheel lift signal or a wheel grounded signal as a function of yaw rate, lateral acceleration, roll rate and longitudinal acceleration;
adjusting the calculated angle in response to the wheel lift or wheel grounded signal; and
controlling a safety system in response to the calculated vehicle angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of operating a control system for an automotive vehicle comprising:
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detecting a wheel grounded condition; and
adjusting the reference bank angle toward the linear bank angle in response to the wheel grounded condition. - View Dependent Claims (10, 11, 12, 13)
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14. A method of operating a control system for an automotive vehicle comprising:
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detecting a wheel grounded condition; and
setting a wheel departure angle to about zero in response to the absolutely grounded condition. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A method of operating a control system for a vehicle comprising:
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determining a wheel lift condition; and
adjusting the roll signal for control in response to the absolutely lifted condition. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A method of operating a control system for a vehicle comprising:
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determining a front inside wheel lift state;
determining a rear inside wheel lift state;
when the front inside wheel lift state is lifted and the rear inside wheel is not grounded or the rear wheel is lifted and the front inside wheel is not grounded, calculating a wheel departure angle. - View Dependent Claims (31, 32)
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33. A method of operating a control system for a vehicle;
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providing a first wheel lift detection method;
providing a second wheel lift detection method;
determining a vehicle configuration or setting; and
switching between the first wheel lift detection method and second wheel lift detection method in response to the vehicle configuration or setting.
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Specification