Kinematics of Suspensions
The following section describes the various designs or approaches undertaken in order to restrict the degrees of freedom of the wheel carrier and limit its motion only to comression and rebound.
→Since struts are of finite length, the wheel carrier executes three-dimensional motion.
If this movement corresponds to the most general movement of a body in space, it can then be denoted as "instantaneously fastened" at any point in time, i.e. as a movement around an instantaneous axis of rotation in space with a displacement in axial direction, and we speak of a "three-dimensional suspension "