Wheel lifted and grounded identification for an automotive vehicle
First Claim
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1. A method of controlling a vehicle having a plurality of wheels comprising:
- determining at least one parameter selected from a linear corner velocity, a rolling radius of a wheel, a rolling radius wheel departure angle, slip rate, and road torque;
determining a heave normal load and a non-heave normal load;
determining a total normal load as a function of said heave normal load and said non-heave normal load;
generating a wheel lift signal in response to said at least one parameter and said total normal load; and
controlling a safety system of an automotive vehicle in response to a said wheel lift signal.
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Abstract
A control system (18) for an automotive vehicle (10) has a first roll condition detector (64A), a second roll condition detector (64B), a third roll condition detector (64C), and a controller (26) that uses the roll condition generated by the roll condition detectors (64A-C) to determine a wheel lift condition. Other roll condition detectors may also be used in the wheel lift determination. The wheel lift conditions may be active or passive or both.
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Citations
54 Claims
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1. A method of controlling a vehicle having a plurality of wheels comprising:
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determining at least one parameter selected from a linear corner velocity, a rolling radius of a wheel, a rolling radius wheel departure angle, slip rate, and road torque; determining a heave normal load and a non-heave normal load; determining a total normal load as a function of said heave normal load and said non-heave normal load; generating a wheel lift signal in response to said at least one parameter and said total normal load; and controlling a safety system of an automotive vehicle in response to a said wheel lift signal. - View Dependent Claims (2, 3)
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4. A method of controlling a vehicle having a plurality of wheels comprising;
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determining a wheel departure angle; determining an actual road torque; determining a wheel longitudinal slip; and determining a wheel lift status for said plurality of wheels in response to said wheel departure angle, said actual road torque, and said wheel longitudinal slip. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 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, 48, 49, 50, 51)
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52. A method for controlling an automotive vehicle having a plurality of wheels comprising:
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measuring a yaw rate; determining a lateral acceleration; determining a roll rate; determining longitudinal acceleration; generating said wheel lift signal as a function of said yaw rate, said lateral acceleration, said roll rate and said longitudinal acceleration; and controlling a safety system in response to said wheel lift signal. - View Dependent Claims (53, 54)
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Specification