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The industry application of brushless dc motor controller

by:Hoprio     2020-07-17

the industry application of brushless dc motor controller brushless dc motor controller is nowadays one of the most popular words motor controller, a more than thousands of people every day in the search to understand the term, actually because of brushless dc motor controller has both ac motor controller of simple structure, reliable operation, easy maintenance and a series of advantages, but also has high efficiency dc motor controller, no excitation loss and speed control performance is good, so in the areas of current popular industry began to gradually becomes widespread, such as production lines, medical equipment, automated production, textile industry, packaging machinery, and robots, and so on. The application of brushless dc motor controller mainly divided into the following three categories: 1, need constant speed operation of mechanical general industry does not need speed, mostly adopt ac asynchronous or synchronous motor controller as a power source. With the continuous development of brushless dc motor controller technology is mature, the power is not more than 2 kw and continuously under the condition of constant speed operation, in order to reduce the volume, improve efficiency, reduce energy consumption, energy conservation and emissions reduction, more and more enterprises choose brushless dc motor controller for use as a power source, the application of this kind of brushless dc motor controller are: automatic doors, elevators, water pump, fan, etc. And in need of large power machinery, in addition to the permanent magnet motor controller should be added to the drive and the external control device, cost of investment and return is out, so the less application brushless motor controller. 2, need speed running the application of this type mechanical equipment include any speed setting and adjustment, the control accuracy is not high. This kind of system can be divided into two kinds: one kind is open loop speed control system, the other is a closed-loop speed control system ( This time the speed of feedback device with low resolution or ac, dc pulse encoder speed, etc. ) 。 There are three kinds of commonly used motor controller mainly: brushless dc motor controller, asynchronous motor controller and a brushless dc motor controller. In the packaging machinery, food machinery, printing machinery, conveying machinery, textile machinery and transport vehicles can be seen everywhere. First used in the application of the adjustable speed system is more dc motor controller, with the development of ac speed regulating technique especially the inverter and controller, ac frequency conversion technology obtained the widespread application, frequency converter and ac motor controller to infiltrate the original application field of the vast majority of dc speed regulating system. In recent years, because of the brushless dc motor controller the advantages of small volume, light weight and high efficiency and energy saving of the increasingly prominent, small and medium-sized power ac frequency conversion system is gradually replaced by speed regulation system of brushless dc motor controller, especially in textile machinery, printing machinery, such as the original field frequency conversion system is widely applied. In some application fields directly by the battery power supply, now more use of brushless dc motor. 3, need precise control of mechanical accuracy control of the servo motor controller in the field of industrial automation has always been one of the most important in the motor controller, different applications, control of the servo motor controller performance requirements are also different, in the actual application, servo motor controller control in different forms: torque/current control, speed control and position control. Due to the good control performance, brushless dc motor (BLDCM) in high speed, high precision positioning system gradually replace the dc motor controller and step motor controller, become one of the modern choice of motor servo system controller. At present, scanner, camera, CD cd-rom drives, medical diagnostic CT, computer hard disk drives, and numerical control lathe driving medium are beginning to adopt the brushless dc motor controller.
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