Magnetizing and demagnetizing device for small circular ring type magnetic system and using method thereof

Abstract

The invention relates to the technical field of torque motors, and particularly relates to a magnetizing and demagnetizing device for a small circular ring type magnetic system and a using method thereof. The device comprises a case, a working window, a double-yoke type magnetic circuit tool coil, a magnetic tube resistor, a voltage regulating transformer, an alternating current ammeter, a buttonswitch, a direct current ammeter, a silicon controlled rectifier full-bridge rectification circuit, a first relay and a second relay. The device is wide in application prospect, has remarkable military, economic and social benefits, is simple, safe, reliable, small in size, flexible to move, easy to operate, convenient to use and maintain and the like, can effectively recover the magnetic field intensity of an original design state of a small circular ring type magnetic system, continues to be used and is stable in quality. The magnetic system with the attenuated magnetic field intensity is completely reused, and the repair efficiency is improved by 40%; and the magnetizing and demagnetizing device is suitable for magnetizing and demagnetizing a certain type of aircraft electro-hydraulic amplifier torque motor magnetic system and magnetizing and demagnetizing small permanent magnet materials with a magnetic flux direction as a longitudinal axis direction.

Description

technical field [0001] The invention relates to the technical field of torque motors, in particular to a charging and demagnetizing device for a small ring-shaped magnetic system and a method for using the same. Background technique [0002] A small ring-shaped magnetic system is used in the torque motor of the aircraft electro-hydraulic amplifier to provide a constant magnetic field for the torque motor. The fixed magnetic flux of the constant magnetic field and the control magnetic flux generated by the electric transmission signal through the coil work together, and the direction and magnitude of the electric transmission current are used to control the superposition or subtraction of the magnetic force lines in the left and right magnetic gap spaces of the torque motor, so that the motor produces a deflection The electromagnetic torque in the direction drives the electro-hydraulic amplifier to work. Due to the needs of aircraft weight reduction and miniaturization struc...

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Problems solved by technology

[0004] At present, most magnetizing devices generally use capacitive pulse current magnetization. In addition to constant voltage control of the capacitor voltage to ensure the quality and consistency of the magnetization, it is also necessary to configure an automatic capacitor discharge circuit after shutdown to quickly discharge the electricity to ensure Personal safety, complex circuits

At the same time, in order to ensure that the capacitance of the capacitor is within a certain range, so as not to exceed the withstand voltage and cause the capacitor to explode, it is necessary to regularly check the quality of the capacitor, which involves too much staff and energy, resulting in increased maintenance costs.

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