Variable-geometry suspension design in driver assistance systems

The paper proposes variable-geometry suspension design to enhance road stability during vehicle maneuvers. The orientation of wheels is modified by a suspension actuator, which results in an additional steering angle and a camber angle. A detailed analysis shows that the variable-geometry suspension system affects both the steering and the camber angle. Consequently, the integration of steering and wheel tilting can be handled by the variable-geometry suspension system. It is also shown that the suspension construction affects the control design. The control system must guarantee various vehicle performances such as trajectory tracking, roll stability and geometry limits. The operation of the designed control system is illustrated through simulation examples.