How to calculate and analyze the sound coil motor
time£º2019/6/22 click£º6337
How to calculate and analyze the sound coil motor. As a user of a loop motor(loop motor), you can not know how it is produced, but you should know that it is mainly composed of two parts: stator and mover. The stator is equipped with a permanent magnet that generates the main magnetic flux, and the motor is a cylindrical winding with a cable loop above it.
There is an old Chinese saying called "study hard and go up every day". Translated into Chinese English is "good good for good, day up". In this period, you may as well follow the small editor to learn how to reasonably calculate and analyze the sound motor(sound motor).
First, the following points:
1, the selection of the movable and stator lengths of the ring motor(ring motor) directly affects the smoothness of the "force-displacement" curve of the motor. On the basis of meeting the stroke requirements, the stator length is fixed, and the movable length is changed appropriately. You can make the "force-displacement" curve smoother.
2, there is a large magnetic leakage between the two ring magnetic poles of the ring motor(ring motor). The leakage magnetic field will increase the flux of the external magnetic yoke and increase the saturation degree; In order to reduce the magnetic leakage between the poles, a magnetic separation ring is designed between the poles to reduce the saturation of the outer magnetic yoke part and reduce the thickness of the magnetic yoke. However, the distance between poles must be reasonably designed, otherwise it will affect the total flux of the motor, but it will reduce the output of the motor. Therefore, the above issues need to be considered in the calculation and analysis.
3, the thickness of the external magnetic yoke mainly affects the degree of saturation of the magnetic path. Thick pass is small, saturation degree increases, the magnetic leakage of motor will increase; Conversely, the thickness is too large, and the diameter of the ring will decrease. Therefore, the outer magnetic yoke thickness must be reasonably designed.
Reasonable calculation and analysis. The answer is obvious.
(1) Numerical calculation is an effective method for the design of a coil motor(loop motor), which can accurately calculate the output and characteristics of the motor.
(2) The structural parameters that affect the coil motor(coil motor) include magnetic steel thickness, coil thickness, external magnetic yoke thickness, interpole distance, and stator and motor length, of which the greater influence is magnetic steel thickness and coil thickness.
(3) In order to reduce magnetic leakage and reduce the saturation of the magnetic path, it is recommended to design magnetic separation rings between magnetic poles.
(4) The air-gap magnetic field corresponding to the bottom magnetic pole is slightly larger than the magnetic field corresponding to the external magnetic pole, which is caused by the asymmetry of the magnetic path in the motor; It will cause asymmetry between the left and right sections of the "force-displacement" curve.
Tongmao Motor has been deeply ploughing coil Motors(coil motors) for many years. It has the technical experience of Europe and the United States in the industry. It uses customer appeal as its design direction and specializes in customizing sound coil Motors(coil motors) with reasonable performance for customers. Tongmao can provide peak value of 5000 N, A linear coil motor(coil motor) with a stroke of 300mm; Can provide a swing loop motor(coil motor) with a peak value of 50NM and a swing angle of 120 degrees; A linear motor with a continuous thrust of 700N can be provided.
The article originated from the original company of Kunshan Tongmao Electronics Co., Ltd.(www.linearmotorjust.com) and is reproduced. Please indicate the source.
Linear motor