China 24v dc gear motor application classification
Because the China 24v dc gear motor has the advantages of simple structure, reliable operation and convenient maintenance of the AC motor, the working requirements of the DC motor have the characteristics of high operating efficiency, no excitation loss and good speed regulation performance of the DC motor, so the current national economy Various fields, such as the application of DC motors in packaging machinery, applications in medical devices, instrumentation, chemicals, textiles, and household appliances are becoming increasingly popular.
The application of DC motors is mainly divided into the following categories:
1, fixed speed drive machinery
In general industrial applications, where speed regulation is not required, most of them use three-phase or single-phase AC asynchronous and synchronous motors. With the advancement of power electronics technology, in order to reduce the volume and save power in the case of continuous operation of no more than 10kw. Materials, improving efficiency and reducing losses, more and more motors are being replaced by DC motors, such as: automatic doors, elevators, pumps, fans and so on. In the case of high power, since the cost and investment are large, in addition to the permanent magnet motor, it is necessary to add a device such as a driver, so that a brushless motor is rarely used at present.
2, adjustable speed drive machinery
The speed needs to be set and adjusted arbitrarily, but the speed control system with low control precision is not required. There are two types of such systems: one is an open loop speed control system, and the other is a closed loop speed control system (the speed feedback device at this time mostly uses a low resolution pulse encoder or AC and DC speed measurement, etc.). There are three main types of motors commonly used: DC brush motors, asynchronous motors, and DC brushless motors. This has a large number of applications in packaging machinery, food machinery, printing machinery, material handling machinery, textile machinery and transportation vehicles.
At the beginning of the application field of adjustable speed system, DC motor is used. With the development of AC speed regulation technology, especially power electronics technology and controller, AC frequency conversion technology has been widely used, and inverter and AC motor penetrated into Most of the original applications of DC speed control systems. In recent years, due to the advantages of small size, light weight, high efficiency and energy saving of DC motors, small and medium power AC frequency conversion systems are gradually being replaced by brushless DC speed control systems, especially in textile machinery, printing machinery and other original frequency conversion systems. Apply more fields. In some applications that are directly powered by batteries, DC motors are now used more.
3, precise control
DC motors have always played a very important role in the high-precision control of industrial automation. Different applications have different control performance requirements for DC motors. In practical applications, various control modes of DC motors are used. : Torque control / current control, speed control, position control. Due to its good control performance, DC motors have gradually replaced DC motors and stepper motors in high-speed, high-precision positioning systems, making them one of the motors of choice for modern DC systems. At present, DC motors DC systems are widely used for precision control in scanners, cameras, CD drive, medical diagnostic CT, computer hard drive and CNC lathe drive.
4, other applications
Household appliances such as automatic washing machines, CD players, etc.; military applications such as submarines, warships; and the start of large synchronous motors.
