Wheel lift identification for an automotive vehicle

A method for controlling an automotive vehicle having a plurality of wheels comprising:

• measuring a yaw rate;
• measuring a lateral acceleration;
• measuring a roll rate;
• measuring longitudinal acceleration;
• determining a normal force attributable to a sway bar;
• and
• determining when a wheel has lifted as a function of yaw rate, lateral acceleration, roll rate longitudinal acceleration the normal force attributable to a sway bar.

A method for determining wheel lift of a wheel of an automotive vehicle comprising:

• measuring a lateral acceleration;
• measuring a yaw rate;
• measuring a roil rate;
• measuring longitudinal acceleration;
• estimating a normal force acting on the wheel as a function of yaw rate, lateral acceleration, roll rate and longitudinal acceleration;
• comparing the normal force to a normal force threshold;
• and
• indicating when a wheel has lifted when the normal force on the wheel is less than the normal force threshold.

A method for monitoring a condition of an automotive vehicle having a plurality of wheels comprising:

• determining a static normal force acting on said plurality of wheels;
• determining a dynamic load transfer acting on said plurality of wheels;
• determining normal forces for each of said plurality of wheels in as a function of the static normal force and the dynamic load transfer;
• and
• indicating when at least one of the wheels has lifted when at least one of the normal forces for each of said plurality of wheels is less than the normal force threshold.

A system for detecting lift of a wheel of an automotive vehicle comprising:

• a yaw rate sensor generating a yaw rate signal;
• a lateral acceleration sensor generating a lateral acceleration signal;
• a roll rate sensor generating a roll rate signal;
• a longitudinal acceleration sensor generating a longitudinal acceleration signal;
• and
• a controller coupled to said yaw rate sensor, said lateral acceleration sensor, said roll rate sensor and said longitudinal acceleration sensor, said controller determining a dynamic load transfer acting on said plurality of wheels as a function of yaw rate, lateral acceleration, roll rate and longitudinal acceleration, determining normal forces for each of said plurality of wheels as a function of the dynamic load transfer, and indicating when a wheel has lifted when at least one of the normal forces for each of said plurality of wheels is less than a normal force threshold.