Weight-force compensation device

A device, comprising:

• a stator;
• and
• a translator movable relative to the stator along a movement axis,
• wherein:
• the translator comprises a first permanent magnet arrangement having an axial magnetization;
• the first permanent magnet arrangement comprises an axially magnetized ring magnet;
• the stator comprises a second permanent magnet arrangement radially surrounding the first permanent magnet arrangement;
• the stator comprises a third permanent magnet arrangement coaxial with the first permanent magnet arrangement;
• the third permanent magnet arrangement has an axial magnetization inverse to the axial magnetization of the first permanent magnet arrangement;
• the stator comprises a magnetic body arrangement coaxial to the first permanent magnet arrangement;
• the third permanent magnet is coxially below the first permanent magnet along a direction of a force due to a weight acting on the translator;
• the magnetic body arrangement is coaxially above the first permanent magnet arrangement along the direction of the force due to the weight acting on the translator;
• the first permanent magnet arrangement, the second permanent magnet arrangement, the third permanent magnet arrangement and the magnetic body arrangement define a magnetic unit;
• in interaction with each other, the first permanent magnet arrangement, the second permanent magnet arrangement, the third permanent magnet arrangement and the magnetic body arrangement define a compensating force that counteracts the weight acting on the translator.