来源：黑龙江快乐十分http://www.aoshangjk.com 发布时间：2019-07-29 浏览：次
1. Speed-adjustable driving machinery
Speed requirement is arbitrarily set and adjusted, but the control precision is not high. This kind of system can be divided into two kinds: one is open-loop speed control system, the other is closed-loop speed control system (at this time, the speed reactor mostly uses low-resolution pulse encoder or AC, DC speed measurement, etc.). There are three kinds of motors commonly used: DC brush motor, DC brushless motor and asynchronous motor. This is widely used in packaging machinery, food machinery, printing machinery, material delivery machinery, textile machinery and transportation vehicles.
At the beginning, DC motor is widely used in the field of application of adjustable speed system. With the development of AC speed control technology, especially power electronics technology and controller, AC frequency conversion technology has been widely used. Frequency converter and AC motor soak into the vast majority of the original application of DC speed control system. In recent years, due to the increasingly prominent advantages of BLDCM, such as small size, light weight, high efficiency and energy saving, small and medium power AC frequency conversion system is gradually replaced by BLDCM speed regulation system, especially in textile machinery, printing machinery and other original frequency conversion systems. In some applications directly powered by batteries, more and more brushless DC motors are used nowadays.
2. Constant Speed Driving Machinery
Three-phase or single-phase AC asynchronous and synchronous motors are often used in general industrial areas without speed regulation. With the development of power electronics technology, more and more motors are being brushless straightening in order to reduce volume, save data, improve efficiency and reduce losses under the condition of power less than 10 kW and continuous operation. Flow motors are replaced by automatic doors, elevators, pumps, fans and so on. In places with high power, brushless motors are seldom used at present because of large primary cost and investment, besides permanent magnet motors, there is also a need for additional devices such as drivers.
3. Fine Control
Servo motors play a very important role in high-precision control of industrial automation. The requirements for control performance of servo motors vary with different application places. In practice, different control modes of servo motors include torque control/current control, speed control and position control. Control. Because of its good control performance, brushless DC motor gradually replaces DC motor and stepper motor in high-speed and high-precision positioning system, and becomes one of the motors selected by modern servo system. At present, brushless DC motor servo system is widely used for fine control in scanner, camera, CD drive, medical diagnostic CT, computer hard disk drive and CNC lathe drive.
4. Other Applications
Household appliances such as automatic washing machine, CD player, etc., military applications such as submarines, warships, and the start of large synchronous motors.
This article is dedicated by the friendship of Shandong micro-motors. For more knowledge, please click on: http://www.aoshangjk.com sincere attitude. To provide you with comprehensive services. More relevant knowledge will be dedicated to you one after another. Please look forward to it.