With the development of modern electrical technology and computer technology and the application of modern control theory, electrical automation drives are developing in the direction of computer control process automation. In order to achieve high-quality and high-efficiency production, in today's reality, automatic control has been widely distributed and developed into various fields of life, and the application of automatic speed regulation is particularly important. At present, motor control has developed from simple to complex, and has become the mainstream. Its application fields are not always very wide, such as radar antenna control, artillery control, inertial navigation, etc. Control industrial equipment, such as CNC machine tools, industrial robots, printers, control printers, fax machines, copiers, scanners, computer peripherals, office supplies. Control of audio-visual equipment and recorders, air-conditioning control of washing machines, household appliances encoding cameras.
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