Conveying system

摘要

A conveying system includes: a linear induction motor including a stator provided with a plurality of primary coils arranged along a conveying path and a mover provided movably along the conveying path; one or more first inverters that are provided corresponding to at least one of the primary coils in one or more areas requiring positioning on the conveying path to perform vector control with a sensor; one or more second inverters that are provided corresponding to at least of the primary coils in one or more areas requiring no positioning on the conveying path to perform V/F control; and a controller that is configured to output a speed reference to the first second inverters to control electric supply to the primary coils and to output the speed reference based on a feedback position received from a detector to the first inverter, to perform position control.

主权项

1. A conveying system comprising:
a linear induction motor including:
a stator provided with a plurality of primary coils arranged along a conveying path and;a mover provided movably along the conveying path and provided with a secondary conductor facing the primary coils; one or more first inverters that are provided corresponding to at least one of the primary coils in one or more areas requiring positioning on the conveying path to perform vector control with a sensor; one or more second inverters that are provided corresponding to at least one of the primary coils in one or more areas requiring no positioning on the conveying path to perform V/F control; one or more first sensors corresponding to at least one of the primary coils in the one or more areas requiring positioning on the conveying path, the one or more first sensors configured to output a feedback position that is position data of the mover on the conveying path; and a controller that is configured to output a speed reference to the first and second inverters to control electric supply to the primary coils, and to receive the feedback position from one of the one or more first sensors and output the speed reference based on the feedback position to the first inverter to perform position control.