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

Claim 9:
10. A linear transport system comprising
a first carriage,
a second carriage,
a guide rail, and
a linear motor for driving the first and the second carriage along the guide rail,
wherein the linear motor comprises a stator and a first and a second rotor,
wherein the stator has motor modules that are arranged along the guide rail and each comprise 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 that has a plurality of magnets oriented along the guide rail and is configured to generate a first magnetic field,
wherein 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 a 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,
wherein a first control signal is applied to the stator, this first control signal triggering a first measurement that depends on the magnetic vector field of the magnetic field generators of the two carriages,
wherein at least one first measurement signal associated with one of the two carriages is received, which first measurement signal is based on the first measurement,
wherein the carriage associated with the first measurement signal is identified as the first carriage or as the second carriage based on the at least the first measurement signal,
wherein at least one reference value is associated with one of the two carriages, wherein the identification of the carriage is based on a comparison between the first measurement signal and the at least one reference value, and a first or a second identification signal is outputted that represents an identification of the carriage associated with the first measurement signal as the first or the second carriage.