Patent ID: 11916499
Assignee: BECKHOFF AUTOMATION GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 6:
7. A linear transport system, comprising:
a first carriage and a second carriage,
a linear motor for driving the first carriage and the second carriage, and
a guide rail,
wherein the linear motor comprises a stator and a first and a second rotor,
wherein the stator has a plurality of drive coils that are arranged along the guide rail individual motor modules comprise a plurality of drive coils,
wherein the first rotor is arranged on the first carriage and the second rotor is arranged on the second carriage,
wherein the first carriage has a first magnetic field generator,
wherein the second carriage has a second magnetic field generator,
wherein the first magnetic field generator has a plurality of magnets oriented along the guide rail and is configured to generate the first magnetic field, and the second carriage has a second magnetic field generator that has a plurality of magnets oriented along the guide rail and is configured to generate the second magnetic field,
wherein the magnets of the first magnetic field generator and the magnets of the second magnetic field generator are oriented in each case alternately with the south pole and the north pole facing the motor modules,
wherein the first magnetic field generator differs from the second magnetic field generator at least in terms of its magnetic vector field, in which the pole orientation of the magnets of the first magnetic field generator of the first carriage is exactly opposite the pole orientation of the magnets of the second magnetic field generator of the second carriage with regard to the orientation toward the motor modules, such that, when the magnetic field generators are considered in the case of first and second carriages placed on the guide rail, the south pole of the first magnet of one magnetic field generator and the north pole of the first magnet of the other magnetic field generator are oriented facing the motor modules, and
wherein the magnetic fields of the magnetic field generators are detected to identify the corresponding carriage.