Permanent magnetic field source device with controllable magnetic moment

Abstract

The invention discloses a permanent magnetic field source device with controllable magnetic moment. The device comprises a base and a rotary power device mounted on the base, is characterized in thatthe rotary power device is in transmission connection with a rotary seat mounted on the base; a first permanent magnet and a second permanent magnet are installed on the two side faces of the rotary seat through transmission rotating shafts respectively, and the rotary seat can control the first permanent magnet and the second permanent magnet to rotate around the transmission rotating shafts in atransmission mode under operation of the rotary power device so as to change the included angle between the two permanent magnets. The device is composed of a pair of semi-annular permanent magnets and a peripheral mechanical rotating device, the size of the air gap of a permanent magnetic circuit can be adjusted through the mechanical rotating device, and therefore the purpose of adjusting the external magnetic moment of the device is achieved. The permanent magnetic field source device with the controllable magnetic moment designed by the invention combines the advantages of low energy consumption of a permanent magnetic field source and controllability of the magnetic moment of an electromagnetic field source, and is suitable for being used on a platform with limited energy.

Description

technical field [0001] The invention belongs to the technical field of magnetic field sources, and in particular relates to a permanent magnetic field source device with controllable magnetic moment. Background technique [0002] Magnetic field sources can generate magnetic fields, which are widely used in military and civilian fields. Magnetic field sources can be divided into two categories according to their magnetization methods: (1) electromagnetic type and (2) permanent magnet type. The electromagnetic magnetic field source relies on the transformation of external electric energy to generate a magnetic field, and it needs to consume electric energy continuously during use, while the permanent magnetic field source does not need to consume external energy when generating magnetism. These two magnetic field sources have their own advantages and disadvantages, and are suitable for Different usage occasions, but there are some shortcomings: [0003] 1) Electromagnetic mag...

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Problems solved by technology

[0007] In order to solve the deficiencies and defects of the above-mentioned prior art, the inventors proposed a permanent magnet magnetic field source device with controllable magnetic moment, which solves the problem of large energy consumption of the electromagnetic field source and simultaneously solves the problem of the permanent magnet magnetic field source Uncontrollable torque, inconvenient use and potential safety hazards

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