A Stator Excited Linear Rotary Motor Structure

Abstract

The invention discloses a stator excitation-type linear rotor motor structure. The stator excitation-type linear rotor motor structure comprises a stator and a rotor and has the following characteristics that the stator is formed by combining m stator modules along an axial direction, magnetic isolation rings are arranged among the stator modules, the rotor is formed by combining n rotor modules along the axial direction, each stator module is formed by combining i stator units along a circumferential direction, each stator unit is formed by sequentially arranging and combining four T-shaped teeth along the axial direction, a permanent magnet and a magnetic isolation block are arranged between the two intermediate T-shaped teeth, and concentrated windings are arranged on the T-shaped teeth. By the stator excitation-type linear rotor motor structure, linear, rotation and spiral three-dimensional motion is achieved; with the adaption of a dual-salient pole structure, the thrust / torque-power density is high, the reliability is high, and the stator excitation-type linear rotor motor structure is simple and is convenient to process and manufacture; and the stator and the rotor of an SMCsoft magnetic material is low in loss, and the efficiency is high.

Description

technical field [0001] The invention relates to a linear rotation two-degree-of-freedom motor, in particular to a stator excitation type linear rotation two-degree-of-freedom motor, which is suitable for applications requiring linear, rotary and helical drives, and belongs to the technical field of special motors. Background technique [0002] Since the industrial revolution, the automation industry with the goal of liberating hands has developed by leaps and bounds. As the drive and actuator of many modern automation products, electric motors play a pivotal role in the fields of industry, national defense and life. With the increasing complexity of modern drive systems and the improvement of driving precision requirements, the application of multi-degree-of-freedom drives is becoming more and more extensive, such as human joints, robotic arms, high-end machine tools, ship propulsion, artillery turntables, office automation, and multi-coordinate machining , satellite tracki...

AI Technical Summary

Problems solved by technology

[0003] One of the methods to realize linear rotary motion is the combination of multiple single-degree-of-freedom motors through the mechanical transmission mechanism for space movement. Although this type of combination mechanism can realize two-degree-of-freedom drive, it has obvious shortcomings: multiple transmission gaps reduce the system positioning accuracy; multiple mechanical components increase system size and weight

Considering the existing linear rotation two-degree-of-freedom motors, there are still some problems to be solved, which are mainly reflected in the following aspects: 1) The helical structure can only perform helical movement in the axial direction, the pitch is fixed, and the use is limited; 2) ) The series double-winding structure is axial series, and the motor presents a slender structure; 3) There is cross-coupling between the rotating magnetic field and the traveling wave magnetic field in some structures, which is not conducive to the optimal design of the motor; 4) The integrated structure often uses concentrated windings, windings The number of phases is large, the control is difficult, and the control strategy is complicated; 5) The structure of the stator and the mover is special, the motor manufacturing process is complicated, and the processing is difficult; 6) The control theory and technology of the linear rotation two-degree-of-freedom motor need to be improved

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