A dual-rotor modular permanent magnet linear motor capable of differential operation

Abstract

The invention discloses a dual-mover modular permanent magnet linear motor capable of differential operation. The motor comprises an upper-layer rotor module, a lower-layer rotor module and a stator module; the stator module is arranged between the upper-layer rotor module and the lower-layer rotor module; the upper-layer rotor module includes a plurality of first E-shaped iron cores, and the opening direction of the first E-shaped iron cores faces the stator module; a magnetic isolation block is arranged between two adjacent first E-shaped iron cores; the lower-layer rotor module comprises aplurality of second E-shaped iron cores, the second E-shaped iron cores have the same structure as the first E-shaped iron cores, the opening direction of the second E-shaped iron cores faces the stator module, and a magnetic isolation block is arranged between two adjacent second E-shaped iron cores; the first E-shaped iron cores and the second E-shaped iron cores are both provided with windings;and the stator module comprises a permanent magnet group and a stator core. The modular structure of the invention facilitates expansion of the thrust range of the motor, weakens the thrust fluctuation of the motor, simplifies the maintenance difficulty of the motor and shortens the maintenance period.

Description

technical field [0001] The invention relates to the field of permanent magnet linear motors, in particular to a dual mover modular permanent magnet linear motor capable of differential speed operation. Background technique [0002] In traditional linear motion situations, linear motion is usually converted from rotary motion to linear motion by a rotating motor through a gearbox, worm gear, etc. The structure is complex, bulky, and the response speed and accuracy are not high. Using a linear motor to directly drive the load to run can greatly reduce the complexity of the drive system structure and improve the system's response speed and operation accuracy. However, if two different linear motion speeds are required at the same time, most of them are driven by two independent linear motors at present, which has the disadvantages of large space occupation, high cost, etc., and the maintenance time is long and difficult in the event of a failure. . Contents of the invention ...

AI Technical Summary

Problems solved by technology

However, if two different linear motion speeds are required at the same time, most of them are driven by two independent linear motors at present, which has the disadvantages of large space occupation, high cost, etc., and the maintenance time is long and difficult in the event of a failure.

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