Low resistance ironless single side permanent magnet synchronous linear motor

Abstract

The field of permanent magnet linear motor of the present invention discloses a low-resistance iron-coreless unilateral permanent magnet synchronous linear motor, which includes a linear guide rail with permanent magnets laid out at intervals along the axial direction, and a mover seat that slides and cooperates with the linear guide rail. The linear guide rail is parallel and symmetrically arranged with the first track and the second track along the axial direction, and the first guide groove and the second guide groove with the groove wall as a cavity are correspondingly opened on the mover seat. The first track and the second track are at least Arrange at least one long steel magnet along the vertical direction on one axial side wall, the first guide groove, the second guide groove and the bottom of the same side of the long steel magnet are connected with piezoelectric ceramics, and coils are arranged in the cavity of the adjacent groove wall , the coil is connected with piezoelectric ceramic wires. The guiding function of the guide rail is retained, and when the mover seat is under load and pressure, the positive voltage effect of piezoelectric ceramics is used to supply current to the coil, and under the cutting of the symmetrical magnetic field of the long steel magnet, an upward lifting force is generated on the mover seat to suppress Thrust fluctuations to improve the robustness of the travel system.

Description

technical field [0001] The invention relates to the field of permanent magnet linear motors, in particular to a low-resistance iron-coreless single-side permanent magnet synchronous linear motor. Background technique [0002] The breakthrough in the structure of the linear motor enables it to be directly driven linearly without other intermediate links, and has the characteristics of zero rotation of the feed system. When the linear motor performs linear motion under the action of an electromagnetic field, guide rails are needed to regulate and limit The travel route, so there is unavoidable sliding friction resistance, which is proportional to the positive pressure of the mover on the guide rail. The linear motor mover is used as a load unit. As the actual load increases, the thrust fluctuation will be much higher than the ideal experimental data. , while reducing the robustness of the system. Contents of the invention [0003] Aiming at the deficiencies of the prior art...

AI Technical Summary

Problems solved by technology

[0002] The breakthrough in the structure of the linear motor enables it to be directly driven linearly without other intermediate links, and has the characteristics of zero rotation of the feed system. When the linear motor performs linear motion under the action of an electromagnetic field, guide rails are needed to regulate and limit The travel route, so there is unavoidable sliding friction resistance, which is proportional to the positive pressure of the mover on the guide rail. The linear motor mover is used as a load unit. As the actual load increases, the thrust fluctuation will be much higher than the ideal experimental data. , while reducing the robustness of the system

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