System and method for characterizing the road bank for vehicle roll stability control

A method for controlling an automotive vehicle comprising:

• determining a linear road bank angle;
• determining a first reference road bank angle;
• determining a bank angle adjustment factor as a function of a relative roll angle;
• generating a second reference road bank angle in response to the linear bank angle and the first reference road bank angle and the bank angle adjustment factor;
• and
• controlling a safety system in response to the second reference road bank angle.

A method controlling an automotive vehicle comprising:

• determining a linear road bank angle;
• determining a first reference road bank angle;
• determining whether the vehicle is operating in a linear roll region, a transitional roll region or a divergent roll region;
• when the vehicle is operating in the linear roll region, generating a second reference road bank angle in response to a global roll and a linear bank angle adjustment factor;
• determining a bank angle adjustment as a function of a relative roll angle;
• when the vehicle is operating in the transitional roll region, generating the second reference road bank angle in response to the first reference bank angle and the bank angle adjustment factor;
• when the vehicle is operating in the divergent region, holding constant the first reference road bank angle;
• and
• controlling a safety system in response to the second reference road bank angle.