Asymmetric bilateral long primary magnetic suspension permanent magnet linear synchronous motor

Abstract

The invention discloses an asymmetric bilateral long primary magnetic suspension permanent magnet linear synchronous motor, and relates to the field of linear motors, the motor comprises a primary structure forming a motor stator and a secondary structure forming a motor rotor, the primary structure comprises an upper layer propulsion primary and a lower layer suspension primary, the upper-layer iron core is thicker than the lower-layer iron core along the normal direction; the secondary structure is arranged between the upper-layer propulsion primary and the lower-layer suspension primary, and the thickness of an upper-layer permanent magnet of the secondary structure in the normal direction is larger than that of a lower-layer permanent magnet. The primary structure of the motor adopts a bilateral structure, double decoupling of suspension force control and propulsive force control is realized, the system control difficulty is reduced, the asymmetric design is favorable for improving the force density of the motor, realizing extremely low power consumption operation and enhancing the adaptability among suspension force, thrust and load gravity, the secondary structure is used as a rotor, a motion side does not need to be fed, and the power consumption is reduced. And cable-free movement can be realized, so that the device structure can be further simplified.

Description

technical field [0001] The invention relates to the field of linear motors, in particular to an asymmetric bilateral long primary magnetic suspension permanent magnet linear synchronous motor. Background technique [0002] Compared with air levitation, magnetic levitation has the advantages of high rigidity and high bearing capacity, and can adapt to ultra-clean and vacuum manufacturing environments without requiring precision machining of air levitation support surfaces to reduce manufacturing costs, so it is widely used. [0003] In the application of magnetic levitation, according to whether the levitation force and driving force are provided by the same component, the magnetic levitation linear positioning platform can be divided into two categories: one is to use two components to realize the suspension and drive respectively, that is, to use the magnetic levitation linear guide to realize the suspension, The drive is realized by a linear motor, which is analogous to th...

AI Technical Summary

Problems solved by technology

[0005] However, there is coupling between the levitation force control and the thrust control of the commonly used magnetic levitation permanent magnet linear synchronous motor, which realizes both levitation and propulsion functions at the same time by a set of windings, which increases the difficulty of system control.

Images