The art of Magnetic Gravity Compensation is well known in terms of biased or non-biased magnetic bearings. The gravity compensator technology used in this area is usually based on reluctance forces and yields a high passive or active stiffness. For high end 6-DOF controlled Mechatronic applications however it is sometimes more beneficial to obtain a low stiffness between the static and the moving part, since this avoids direct cross talk of parasitic forces from the environment disturbing the accurate controlled moving part.
