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

Claim 2:
3. A method for identifying a carriage of a linear transport system,
wherein the linear transport system has a first carriage, a second carriage, a controller and a linear motor for driving the first and the second carriage,
wherein the linear motor comprises a stator having at least two drive coils and comprises a first and a second rotor, 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 is configured to generate a first magnetic field, and the second carriage has a second magnetic field generator that is configured to generate a second magnetic field, and
wherein the first magnetic field generator differs from the second magnetic field generator at least in terms of its magnetic vector field;, the method comprising the following steps:
applying a first control signal to the stator having at least two drive coils, this control signal triggering a first measurement that depends on the magnetic vector field of the magnetic field generators of the two carriages;
receiving at least one first measurement signal associated with one of the two carriages, which measurement signal is based on the first measurement;
identifying the carriage associated with the first measurement signal 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 stored in the controller and 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
outputting a first or a second identification signal that represents an identification of the carriage associated with the first measurement signal as the first or the second carriage;, the method further comprising the following steps:
receiving a first position signal that represents a first position of one of the two carriages,
after receiving the first position signal, outputting at least one first current vector control signal for distributing at least one first current vector via the drive coils based on a first commutation rule to the stator having at least two drive coils as first control signal, in order to drive the carriage located at the first position, and
receiving as the first measurement signal comprises a second position signal, wherein the second position signal represents at least one position of the carriage driven based on the output first current vector control signal after the first current vector control signal has been output, wherein a first kinematic behavior of the carriage is ascertained based on the first position signal and on the second position signal after the first current vector control signal has been output, wherein the carriage is identified as the first or as the second carriage based on the ascertained kinematic travel behavior.