Look at the nature of the coil motor(coil motor) through the phenomenon
time£º2019/5/5 click£º6691
Look at the nature of the coil motor(coil motor) through the phenomenon. The rapid popularity of smartphones and the rapid development of face recognition have led to the development of related products and technologies, such as coil Motors(coil motors), which are known to be adaptable and narrow spaces. The typical application is as a driver for smart phone cameras and face recognition scanners. Of course, the coil motor(coil motor) is a "multi-sided small expert." It is also widely used in the fields of semiconductor industry, medical care, Valve operation, shock absorbers, micro-machine tool industry, aviation technology, vibration system and other ordinary people's "no-concept" areas.
From this point of view, the sound coil motor(sound coil motor) has a bright future. Based on this, the small editor wants to talk about it further. Starting from the principle, the working principle of the sound coil motor can be described in the following three aspects:
1. Magnetism principle: The working principle of the sound coil motor is based on the principle of amperes, that is, the energized conductor is placed in a magnetic field and produces force F. The size of the force depends on the strength of the magnetic field B, current I, and the direction of the magnetic field and current.
2. Principles of Electronics: Sound coil motors are single-phase bipolar devices. Pressing a voltage on the coil generates a current in the coil, which in turn generates a force proportional to the current on the coil, allowing the coil to move axially in the air gap and determine its direction of motion through the current direction of the coil. When the coil moves in the magnetic field, a voltage(ie, induced electromotive force) proportional to the coil motion speed, magnetic field strength, and wire length is generated in the online circle. The power supply of the drive coil motor(coil motor) must provide enough current to meet the needs of the output force, and it is necessary to overcome the induced electromotive force generated at the peak motion speed of the coil, and the leakage induced pressure drop through the coil.
3. Principles of mechanical systems: Sound coil Motors(sound coil motors) are often sold as a component consisting of magnets and coils. The valley gas gap between the coil and the magnet is usually(0. 254 to 0. 381) mm, this air gap can be increased as needed, but it is only necessary to determine the range of movement allowed by the boot system while avoiding friction or collision between the coil and the magnet. In most cases, the moving load is connected to the coil, that is, the dynamic ring structure. The advantage is that the fixed magnet system can be relatively large, so a strong magnetic field can be obtained; The disadvantage is that the coil transmission line is in motion and it is easy to break the road. At the same time, due to the movable support, the thermal contact between the moving parts and the environment is very bad, and the heat generated by the moving sound ring will increase the temperature of the moving part, so the peak current allowed in the sound ring is small, when the load is particularly sensitive to heat, The load can be connected to the magnet, that is, the fixed ring structure. The cooling of the coil of this structure is no longer a big problem. The peak current allowed by the coil is relatively large, but in order to reduce the mass of the moving part, smaller magnets are used, so the magnetic field is weak. The linear coil motor(coil motor) can achieve direct driving, and there is no recoil from the rotation to the linear movement, and there is no energy loss. The preferred guiding method is a linear bearing or liner combined with a hardened steel shaft. The ax/shaft liner can be assembled into an integral part. It is important to maintain the low friction of the guiding system so as not to reduce the smooth response characteristics of the motor.
Kunshan Tongmao Electronics Co., Ltd. has been deep in the field of sound loop Motors(sound coil motors) for many years. It has technical experience in Europe and the United States, and is designed with customer appeal as its guide. It specializes in customizing sound coil Motors(sound coil motors) with reasonable performance for customers.
This article originated from the original company of Kunshan Tongmao Electronics Co., Ltd.(www.tmmotion.com). Please indicate the source.
Linear motor