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There are many kinds of magnetization methods for magnets, and there are also many kinds of magnetization waveforms, such as sine wave and square wave. Today I will tell you which magnetization waveform is sine wave or square wave.
Which is better, Magnet magnetized sine wave or square wave
Like the square wave, it is mainly suitable for occasions where the motor mainly outputs torque, such as power tools.
The sine wave is mainly suitable for the occasions that require the motor to run smoothly and have low noise, such as stepping motors.
The difference between magnet square wave and sine wave
If the magnet is charged into a square wave, the back electromotive force of the motor may be a square wave or a sine wave. If the magnet is charged into a sine wave, the back electromotive force of the motor is mostly a sine wave. Therefore, the magnetizing waveform of the magnet depends on the use occasion and driving mode of the motor. The back EMF is a sine wave suitable for sine wave driving, and the back EMF is a square wave suitable for square wave driving. The power density of a motor driven by a square wave will vary. It is larger than a motor driven by a sine wave, that is, under the same volume, a motor driven by a square wave is more powerful than a motor driven by a sine wave, but the torque output of a square wave motor is less smooth and suitable for power use. The smooth torque output of the wave motor is suitable for servo applications.
The above is an introduction to the magnet magnetization problem, whether the magnetization waveform is a sine wave or a square wave. The information comes from the Internet and is compiled and edited by Courage Magnet Xiaofu.
More on magnetization of magnets;
Can the axially magnetized magnet be demagnetized for radial magnetization?
Several common magnetization methods of multipole ring magnets
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