A high-precision anti-radiation micro-satellite three-axis magnetic torque device and its working method

Abstract

The invention relates to a high-precision radiation-resistant microsatellite three-axis magnetorquer which comprises two magnetic rods provided with metal cores, a hollow magnetorquer body, a processor and magnetometers. The two magnetic rods provided with the metal cores form an X-axis magnetic rod and a Y-axis magnetic rod respectively and are wound by coils, the hollow magnetorquer body forms a Z-axis hollow coil, the X-axis magnetic rod, the Y-axis magnetic rod, the Z-axis hollow coil, the processor and the magnetometers are integrated into a PCB and form modularization, and three execution mechanisms are independently driven by PWM signals. The invention further relates to a work method of the high-precision radiation-resistant microsatellite three-axis magnetorquer. The high-precision radiation-resistant microsatellite three-axis magnetorquer and the work method thereof have the advantages that reliability of the magnetorquer is improved, and control precision of the magnetorquer is improved; the functions of current monitoring and temperature measuring are achieved, the magnetic rods and a fastening piece are integrally designed, the magnetorquer is convenient to assemble, and strength is increased.

Description

technical field [0001] The invention relates to the technical field of satellite attitude control, in particular to a high-precision anti-radiation micro-satellite three-axis magnetic torque device and a working method thereof. Background technique [0002] The magnetic torque device is an actuator for satellite attitude control, which is widely used in various small satellites, especially for small satellites operating in low earth orbit with strong magnetic field. Its working principle mainly relies on controlling the size and direction of the current in the coil to generate the corresponding magnetic moment and interact with the geomagnetic field, thereby generating a magnetic moment that can control the attitude of the satellite, and then achieve the purpose of controlling the attitude of the satellite. [0003] The existing technical disadvantages are as follows: [0004] 1. Poor output accuracy; [0005] 2. Poor data processing capability; [0006] 3. Lack of automa...

AI Technical Summary

Problems solved by technology

[0008] The present invention takes the magnetic torque device applied to micro-satellites as the research object, and designs a new type of magnetic torque device, aiming at the weak processing ability, low control precision and susceptibility to space radiation commonly found in current commercial device-based magnetic torque devices and other shortcomings, using a new anti-radiation processor to enhance processing capabilities, improve response speed and control accuracy, and use a magnetometer for magnetic field closed-loop control, which can effectively improve the control accuracy of the magnetic torque device

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