Patent ID: 7197384
Filing Date: 2007-03-27
Classification: B60G

Abstract:
1. A regulatable spring-and-damper system in a vehicle, comprising a spring element and a damping element mounted in parallel, wherein one of the elements is adjustable, wherein, to realize a semi-active system, the spring element is passive and the damping element is configured with a damping characteristic that can be regulated in a variable manner, wherein the semi-active system can be described according to a force profile (F where c denotes a spring constant of the passive spring element, d wherein the damping element is regulated by the damping value (d where u denotes a manipulated variable, {dot over (u)} denotes the derivative with respect to time of the manipulated variable, and ƒ denotes a known function, wherein the function (ƒ) is known from an actively regulatable reference system with an adjustable final control element and the force profile (F and wherein the manipulated variable (u) or the derivative with respect to time ({dot over (u)}) of the manipulated variable of the adjustable final control element is determinable in a closed-loop and open-loop control unit according to a stored mathematical relationship.