A dual -fixed -line rotation Halbach Yongcor

Abstract

The invention provides a double-stator linear rotation Hal Bach permanent magnetic actuator which comprises a rotor shaft, a rotor part and a stator part, wherein the rotor part and the stator part are arranged in a coaxial way together with the rotor shaft; the rotor part is fixedly connected with the rotor shaft; the rotor shaft is located and arranged in a machine shell by a sleeve bearing; and the stator part is arranged at the periphery of the rotor part and is located and arranged in the machine shell. Two stators of the actuator are independent of each other along the linear direction, do not have magnetic field along the axial direction, only have magnetic fields along the radial direction, are prepared by laminating silicon steel sheets, and can effectively reduce the loss; each independent stator has a stator structure with a concentrated winding, thus being simple in structure and easy in processing; and researches prove that the rotor has linear relation with the current amplitudes of the two stators along the linear position, so that the actuator can be easily controlled.

Description

technical field [0001] The invention relates to an actuator, in particular to a linear rotary permanent magnet actuator. Background technique [0002] In the industrial and civil fields, motions in the form of linear rotation are very common, such as screw rotation and screwing, oil well drilling, etc. So far, there are many forms of linear rotary electromagnetic drive mechanisms, such as the US patent (US3441819) with the patent title "Reciprocating linear motor" and the patent title "Linear-rotary direct current stepping motors and control system (Linearandrotarydirectcurrentsteppingmotorsandcontrolsystem) "US Patent (US3453510). This type of linear rotary electromagnetic drive mechanism is also an important aspect in the current research on multi-degree-of-freedom drive mechanisms. [0003] Linear actuators can drive linear motion, rotary actuators can drive rotary motion, and the combination of the two can achieve the simplest solution for linear rotary drive. The Chi...

AI Technical Summary

Problems solved by technology

The first driving method is similar to the use of two drivers, the difference is that although the linear and rotary motors share moving parts, the motor structure is more compact, but because the magnetic fields in different directions in the two stators intersect with the moving parts, the movement Magnetic fields on components are extremely complex and difficult to analyze and control

Although the second driving method can increase the interaction between the moving parts and the surface of the stator and provide greater thrust and torque, the mechanism is too complicated, and the stator part must be bell-shaped, which is very difficult to manufacture and install.

[0008] The current single-stator single-moving part linear rotary actuator generally adopts the Japanese patent (JP62-40052) named "Rotary and axial linear motion combination type motor" and the name "Dual radial magnetic field response type linear rotation In the Chinese patent (CN200810042746) of "stepping motor", the magnetic field in the stator has the form of linear rotation and two radial directions. In theory, although there can be more magnetic conduction area in the area of ​​the stator yoke, such a complex magnetic field is seriously It increases the difficulty of stator processing, especially the lamination of silicon steel sheets is very difficult, thus increasing the stator loss

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