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Magnetization method and magnetic field adjustment technology of magnet

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Magnetization method and magnetic field adjustment technology of magnet

A magnet is a magnetic substance, and its magnetism is caused by the arrangement of magnetic moments of its internal atoms or molecules. The magnetization method and magnetic field adjustment technology of magnets are widely used in various fields, such as electronics, communication, medical treatment, energy, etc. This article will introduce the magnetization method and magnetic field adjustment technology of the magnet in detail.
1. Magnetization method of magnet
natural magnetization method
The natural magnetization method refers to the process of exposing a magnet to a magnetic field so that the internal microscopic magnetic moments are arranged according to certain rules, thereby generating magnetism. There are two types of natural magnetization: permanent magnetization and soft magnetization.
(1) Permanent magnetization method
The permanent magnetization method refers to the process in which the microscopic magnetic moments inside the magnet are arranged according to certain rules by an external magnetic field, thereby producing permanent magnetism. The characteristic of permanent magnetization is: after the magnetic field disappears, the magnetism still remains. There are many methods for permanent magnetization, such as sintered permanent magnet method, hot-pressed permanent magnet method, armature winding permanent magnet method, etc.

(2) Soft magnetic magnetization method
The soft magnetic magnetization method refers to the process of arranging the microscopic magnetic moments inside the magnet according to certain rules through an external magnetic field, but does not produce permanent magnetism. The characteristics of soft magnetic magnetization are: after the magnetic field disappears, the magnetism disappears. There are many methods of soft magnetic magnetization, such as induction soft magnetic method, AC power soft magnetic method, pulse power soft magnetic method, etc.
Remanence Reverse Saturation Method
The remanence reverse saturation method refers to the process of generating a reverse saturation magnetic field by changing the direction of the magnetic field to make the residual magnetic field inside the magnet reach a saturated state when the magnetic field strength is high. The characteristic of the residual magnetism reverse saturation method is that after the magnetic field disappears, the residual magnetic field disappears. The remanence reverse saturation method is mainly used to manufacture permanent magnet materials with high coercive force and high remanence.
current excitation method
The current excitation method refers to the process of arranging the microscopic magnetic moments inside the magnet according to a certain law by applying an external current, thereby generating a magnetic field. The characteristic of the current excitation method is that the current disappears after the magnetic field disappears. The current excitation method is mainly used in the manufacture of electromagnets, motors and other equipment.
2. Magnetic Field Adjustment Technology
Constant magnetic field adjustment technology
The constant magnetic field adjustment technology refers to the technology that keeps the magnetic field strength constant by changing the voltage or current of the external power supply. Constant magnetic field adjustment technology is mainly used to manufacture high-precision, high-stability experimental instruments and equipment. Commonly used constant magnetic field adjustment methods are: linear modulation, switch modulation, feedback modulation, etc.
Adjustable magnetic field adjustment technology
Adjustable magnetic field adjustment technology refers to the technology of continuously adjusting the magnetic field strength by changing the voltage or current of the external power supply. Adjustable magnetic field adjustment technology is mainly used to manufacture various application devices that require different magnetic field strengths. Commonly used adjustable magnetic field adjustment methods include: analog circuit modulation, digital circuit modulation, etc.
Micro signal control technology
The micro-signal control technology refers to the technology that realizes the precise adjustment of the magnetic field strength by measuring the small changes of the external signal. Micro-signal control technology is mainly used in the manufacture of experimental instruments and equipment that require high precision in the magnetic field. Commonly used micro-signal control methods include: sensor detection, data processing, etc.

Intelligent Control System Technology
Intelligent control system technology refers to the technology that realizes automatic adjustment and control of magnetic field strength by organically combining various sensors, actuators, and controllers. Intelligent control system technology is mainly used to manufacture advanced equipment and systems with adaptive and self-learning capabilities. Commonly used intelligent control system methods are: fuzzy control, neural network control, etc.
In a word, with the development of science and technology, people's research on the magnetic field is getting more and more in-depth, and the magnetic field adjustment technology is also constantly innovating and improving. In the future, with the emergence of new materials and new processes, we have reason to believe that magnetic field adjustment technology will bring more surprises and breakthroughs to the development of human society.

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