With the rapid development of science and technology and the continuous improvement of people's living standards, low-power motor is widely used as a power drive source, occupying an increasingly important position in the economic development of countries around the world, and this industry plays an important role in promoting the economic development of many industrial countries.



China's small power motor from the production of simple, single performance, small-scale production, development to now has formed a new material, electronic, electrical technology has been widely used high-tech products, and has been mass production, thus also become the global small power motor manufacturing base, China's small power motor are using international standards or foreign advanced standards, Equivalent or equivalent to or refer to international standards such as IEC60072, IEC60034 and MG1 NEMA standards, and the physical quality reaches or exceeds the international advanced level of similar products, with strong international competitiveness. China's main manufacturers of small power motor also have more independent intellectual property rights and core technology, high scientific and technological content.



The following are several stages of the development of the technical level of China's small power motor:



First, start the production of low-power motor stage



At this stage, the former Ministry of Machinery industry organized the establishment of a motor research laboratory in Beijing Electrical Science Research Institute, specializing in the research and development of low-power motors, and with the corresponding trial production factory, which is China's earliest development and small-volume production of low-power motors. At this time, there was no factory specializing in the manufacture of such motors in China. China's first generation of low-power motors are manufactured in the workshop of the Electrical Science Research Institute and a few factories manufacturing conventional motors, mainly including hysteresis motor, motor magnifying machine, synchro machine, rotary transformer, AC servo motor, medium frequency generator, cover pole synchronous motor and AC commutator motor, etc., but the output is very small, the technical force is very weak.



Second, the formation of small power motor industry



At this stage, many factories specializing in the production of small power motors have been built, such as Chengdu micro motor Factory, Beijing micro Motor Factory, Tianjin micro Motor Factory, Shanghai micro motor Factory, Boshan Motor Factory, Shuguang Motor Factory and so on. At this time, several related research institutes were also established, such as Shanghai Micromotor Research Institute, Xi 'an Micromotor Research Institute, Guangzhou fractional horsepower Motor Research Institute, etc., and organized mass production of several low-power motors designed by the former Soviet Union. At the same time, the relevant basic technology has strengthened the scientific research work, and the results have laid the foundation for the design of a new generation of low-power motor. For example, the performance of the motor is improved, the windings are distributed according to harmonics, and the accuracy of the linear rotating transformer is improved.



Third, the rapid development stage of small power motor



Due to the increasing demand for various household appliances and audio equipment, the wide application and popularization of microcomputers, the development of office automation, the need for industrial modernization, the technical transformation of old enterprises, etc., the production of small power motors puts forward extremely high requirements. Obviously, the production capacity of the original small power motor is far from meeting the requirements, and there is an urgent need to develop a plan for large-scale expansion and technological transformation of the industry. At that time, technologically advanced equipment was introduced from abroad and some new factories were built, thus changing the backward face of the past and forming an industry based on mass production.



Fourth, gradually integrate into the stage of globalization



With the further deepening of China's reform and opening up and the accession of WTO, China's small power motor ushered in a new stage of development, this stage a large number of foreign enterprises into our country, in bringing us advanced management experience at the same time also brought advanced technology and production equipment. Domestic enterprises take the opportunity to absorb the introduction of foreign advanced technology, invest a lot of money to carry out technical transformation, introduce a lot of advanced manufacturing equipment and test equipment, greatly improve the technical level of the domestic small power motor industry.



With CAD/CAM and other software for computer-aided design, a large number of applications of aided manufacturing technology and the combination of computer-controlled flexible manufacturing system, main warehouse, robot assembly, etc., the supply management of computer-controlled materials and components has achieved the realization of fully automated and balanced production with high efficiency and high quality throughout the factory. The product development and production cycle is greatly shortened, and the manufacturing cost is significantly reduced; With the development of electronic computers and power electronics technology, low-power motor products have entered a new era, AC frequency conversion speed regulation has gradually replaced DC motor speed regulation, inverter and asynchronous motor integration, there are standard motor installation size, speed regulation ratio of 10∶1 inverter motor has been industrialized production, Intelligent motor with program control function, switched reluctance motor and so on have been applied in various fields, showing significant technical advantages, brushless DC motor, disk permanent magnet DC motor, thin stable speed motor and other products are also developing at a high speed; Coupled with the use of new rare earth magnetic steel, the production volume of small power motor is getting smaller and smaller; Furthermore, the introduction of the motor and the overall structure integration technology further reduces the volume, simplifies the structure, improves the accuracy and reliability of the system, sets electronic technology, microelectronics technology, sensor technology in one of the small power motor can not only achieve multi-function, but also improve the motor control accuracy and sensitivity with the help of computer memory, computing, processing functions, and become intelligent products. The application of all these new materials and new technologies continues to promote the development of low-power motors in the direction of thin, intelligent and mechatronics.