Magnetic moment real-time test system and test method thereof

Abstract

The invention discloses a magnetic moment real-time test system of which a magnetic moment device is arranged in the ground environment testing process. The magnetic moment real-time test system comprises a magnetic flux test unit, a resistance test unit, a temperature test unit, a constant current drive unit and a measurement and control unit. The magnetic moment device is arranged in a high and low temperature testing container. The middle part of the magnetic moment device is provided with a temperature sensor. A test coil is fixed on the fixed position of one side of the magnetic moment device and measures magnetic moment of the magnetic moment device in real time via a flux-meter. A controller electrically communicates with the flux-meter, a temperature transmitter, a voltage measuring module, a current measuring module and an H-bridge commutation circuit respectively. Working current is loaded on the magnetic moment device by utilizing the constant current drive unit, and the measured value signals of magnetic moment, temperature, voltage and current are received and displayed in real time in a display system. Besides, the invention also discloses a magnetic moment real-time measuring method utilizing the system.

Description

technical field [0001] The invention belongs to the technical field of magnetic measurement of spacecraft magnetic torque devices, and in particular relates to a real-time magnetic moment testing system and testing method for magnetic torque devices in ground environment tests such as normal pressure heat and thermal vacuum. Background technique [0002] The magnetic torquer is the execution part of the guidance, navigation and control subsystem of the spacecraft. It generates torque through the interaction between its own magnetic moment and the environmental magnetic field. It is suitable for attitude control and angular momentum control of the spacecraft, and to reduce the environmental torque attitude drift. Once the magnetic torquer fails due to the harsh working environment, it will shorten the life of the entire satellite. Therefore, the reliability and lifespan of the magnetic torquer will be directly related to the lifespan and reliability of the satellite. The co...

AI Technical Summary

Problems solved by technology

When the magnetic torque device is tested on the ground environment such as atmospheric pressure heat and thermal vacuum, it needs to be carried out in the space environment simulation equipment, and the space environment simulation equipment is limited in size, and the interior needs to experience changes in the environment such as high and low temperature, so the equatorial mapping method cannot be realized. The magnetic torque test of the magnetic torque device in the space environment simulation equipment urgently needs to adopt a new test system and test method to test the magnetic torque of the magnetic torque device in the ground environment test process in real time, so as to complete the normal pressure test. Monitoring of the working performance of magnetic torque devices in thermal, thermal vacuum and other environments

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