Adaptive active suspension system with road preview
A method for controlling an active suspension is disclosed. The method includes steps of determining a dimension of a road abnormality ahead of the vehicle; comparing the dimension with a vehicle dimension; responsive to the comparison, classifying the abnormality as one type of a plurality of predetermined types; responsive to a dimension of the abnormality, further classifying the abnormality as having a severity of one type of a plurality of predetermined types; and controlling the suspension responsive to the abnormality type and severity type.
1. A method for controlling an active suspension, comprising steps of:
determining a dimension of a road abnormality ahead of the vehicle;
comparing the dimension with a vehicle dimension;
responsive to the comparison, classifying the abnormality as one type of a plurality of predetermined types;
responsive to a dimension of the abnormality, further classifying the abnormality as having a severity of one type of a plurality of predetermined types; and
controlling the suspension responsive to the abnormality type and severity type.
2. The method of claim 1 wherein the step of controlling the suspension comprises the step of controlling actuatable elements of the suspension prior to actual contact between the vehicle and the road abnormality.
3. The method of claim 1 wherein the step of determining a dimension of a road abnormality ahead of the vehicle comprises the step of determining estimated height, h wl ′ and h wr′ at left and right front wheels, respectively, of a road surface at a location of the road abnormality.
4. The method of claim 1 wherein the step determining a dimension of a road abnormality ahead of the vehicle comprises the step of determining a road profile vector W ROAD representing a condition of the road surface at the road abnormality; and
wherein the step of controlling the suspension comprises the step of controlling the suspension responsive to a magnitude of the road profile vector.
5. The method of claim 1 wherein the step of controlling the suspension comprises controlling the suspension by implementing a Diagonal Rolling Control scheme.
6. The method of claim 1 wherein the step of controlling the suspension comprises controlling the suspension by implementing a Three Wheel Support control scheme.
7. The method of claim 1 wherein the step of controlling the suspension comprises controlling the suspension by implementing a Zigzag Maneuver Control (ZMC) scheme.
8. The method of claim 1 wherein the step of controlling the suspension comprises controlling the suspension by implementing an Alternating Damping Control scheme.
9. The method of claim 1 wherein the step of controlling the suspension comprises controlling the suspension by implementing an Alternating Stiffness Control scheme.
10. The method of claim 1 wherein the step of controlling the suspension comprises controlling the suspension by implementing a Jumping Control scheme.