Patent ID: 9479040
Filing Date: 2016-10-25
CPC Classification: H02K

Claim Text:
1. A high-resolution positioning device having a stator and a rotor, a coil array, arranged on the stator, having at least three groups of flat coils, wherein each group has at least two single coils as a coil pair and the coil array encloses a free space on the stator, furthermore having permanent magnetically-excited circuits that are situated on, against or in the rotor and form a magnet array which likewise encloses a free space, wherein the free spaces accommodate a position measuring system which has a measuring head with sensors and an area scale, characterized in that the positioning device is formed as a freely suspended, magnetically controlled six-dimensional drive, wherein with a corresponding energization and commutation of one coil pair of the coil array, horizontal and vertical forces as well as torques can each be imposed on the rotor by the magnetic interaction in the associated row of the magnet array, and the vertical forces serve the purpose of carrying the rotor weight and the positioning of the rotor, and the permanent-magnetically excited circuits are each composed of a Halbach array comprising a plurality of segments, and the measuring head is situated in the coil array free space and the area scale in the magnet array free space, and the rotor is free of drive-related electrical or electronic and, in this regard, live parts, and for weight compensating the rotor, ferromagnetic plates covering the rotor and travel range are coupled to the stator, and permanent magnetically-excited magnet circuits to the rotor, and an air gap distance is present between the ferromagnetic plates and the permanent magnetically-excited magnet circuits, wherein the ferromagnetic plates cover the pole faces of the permanent magnetically-excited magnet circuits preferably completely in each position of the rotor.