Torque motor for satellite antenna pointing mechanism

Abstract

A torque motor for a satellite antenna direction mechanism utilized in a facility, mainly comprise a cup-shaped rotating shaft, a left limit ring, a left end cover, a left bearing, a housing, an iron core of an outside stator, an outside hollow cup-shaped stator, an outside Halbach magnet body, an iron core of an outside rotor, an iron core of an inside rotor, an inside Halbach magnet body, a right limit ring, an stator of an inside hollow cup-shaped stator, an iron core of an inside stator, a right bearing and a right end cover, wherein the outside Halbach magnet body, the iron core of an outside rotor, the iron core of an inside rotor and the inside Halbach magnet body are connected with the cup-shaped rotating shaft, which are rotating parts of the motor, and others are static parts of the motor. The invention utilizes the outside Halbach magnet structure and the inside Halbach magnet structure, which can largely reduce the thickness of the iron core and increase the air gap flux density and the sinusoidal degree of the air gap, therefore reducing the volume, weight, switch disturbing moment and energy loss of the motor, and accomplishing the outout torque of the torque motor significantly.

Description

technical field [0001] The invention relates to a torque motor, in particular to a torque motor with a Halbach magnet structure for a satellite antenna pointing mechanism, which is especially suitable for small volume, low power consumption, low speed and other occasions. Background technique [0002] Traditional torque motors mostly use brushless DC motors or permanent magnet synchronous motors. In order to increase the output torque, their structural form is often a large-diameter-length ratio. There are strict requirements for indicators such as power consumption, and to achieve a large output torque in a limited volume, the existing motors often adopt a double-stator structure, as shown in Figure 1, the existing double-stator motors are divided into two forms, one One is the concentric structure shown in Figure 1a, and the other is the parallel structure shown in Figure 1b (utility model patent: ZL01244751.X). In the concentric structure shown in Figure 1a, 1 is the roto...

AI Technical Summary

Problems solved by technology

These two forms of motors are difficult to meet the requirements of the satellite antenna pointing mechanism for torque motors with low power consumption, high torque, and small size

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