Different from the characteristics of linear motors and rotary motors, in recent years, with the rapid development of automatic control technology and microcomputers, higher requirements have been placed on the positioning accuracy of various types of automatic control systems. In this case, conventional rotary motors In addition, a straight-line driving device composed of a conversion mechanism has far from meeting the requirements of modern control systems. For this reason, many countries in the world have been researching, developing and applying linear motors in recent years, which has led to the application of linear motors. The more extensive.
Compared with rotary motors, linear motors mainly have the following features:
1 is a simple structure, because the linear motor does not need to turn the rotational movement of additional devices, which makes the system itself greatly simplified structure, weight and volume greatly reduced;
2. Positioning accuracy is high. In the place where linear motion is required, the linear motor can realize direct transmission, thus eliminating various positioning errors caused by the intermediate links. Therefore, the positioning accuracy is high, and if the microcomputer control is used, the linear motor can also be greatly improved. Improve the positioning accuracy of the entire system;
3. It is fast in reaction, high in sensitivity and good in follow-up. The linear motor is easily supported by the magnetic levitation of its mover, so that the air gap between the mover and the stator is always maintained without contact, which eliminates the contact friction between the stator and the mover, thereby greatly improving the system. Sensitivity, rapidity and followability;
4. It is safe, reliable and long-lived. The linear motor can realize the non-contact transmission force, and the mechanical friction loss is almost zero, so the failure is less and maintenance-free, so the work is safe and reliable, and the service life is long.
This article originated from Kunshan Tongmao Electronics Co., Ltd. (
www.tmmotion.com) company original, reproduced please indicate the source.
Linear motor