DC servo motor is one of the earliest motor types used in control system, which has good starting and speed regulation performance and high control accuracy. It can control the rotating speed by changing the armature voltage or excitation current, which is suitable for occasions that need wide speed regulation range and fast response speed. However, DC servo motor also has some disadvantages, such as high maintenance cost, relatively short service life and low efficiency in some application scenarios.
Ac servo motor is an increasingly popular choice in control system in recent years. Compared with DC servo motor, AC servo motor has higher operating efficiency, lower maintenance cost and longer service life. It realizes speed control through frequency conversion speed regulation technology and is suitable for most industrial application scenarios. At the same time, with the development of permanent magnet synchronous technology, vector control technology and direct torque control technology, the performance of AC servo motor has been further improved, and it has been widely used in high-end equipment manufacturing, robots, new energy vehicles and other fields.
Stepping servo motor is a kind of motor with discrete angle rotation ability, which is suitable for application scenarios that need accurate angle control and positioning. Its rotation is realized by controlling the pulse signal. Every time a pulse signal is received, the motor will rotate at a fixed angle. Therefore, by controlling the frequency and number of pulse signals, the precise speed regulation and positioning of stepping motor can be realized. Stepping servo motor has been widely used in printers, scanners, cameras and other office equipment, as well as machine tools, medical equipment and other fields.
The above three kinds of servo motors have their own characteristics, and the appropriate type should be selected according to the needs of specific application scenarios. At the same time, with the continuous development of technology, the performance and function of servo motor will be further improved and improved, which will provide stronger support for the development of automation and intelligence in various fields.