The application fields of electric motors are very wide mainly used in the following seven fields: ?
Electrical servo drive field ? In the requirement of speed control and position control (servo) occasions, the application of special motors is becoming more and more widespread. Switching reluctance motors, permanent magnet brushless DC motors, stepping motors, permanent magnet AC servo motors, permanent magnet DC motors, etc. have been widely used in the field of CNC machine tools, industrial electrical automation, automatic production lines, industrial robots, and a variety of military and civilian equipment. Such as AC servo motor drive system used in gravure printing machine, with its high control accuracy to achieve a very high degree of synchronization and coordination, so that this printing equipment has a high degree of automation, high register accuracy, large printing range, low production costs, energy saving, easy maintenance and other advantages. In the industrial sewing machine, with the permanent magnet AC servo motor control system, brushless DC motor control system, hybrid stepping motor control system of a large number of use, so that the industrial sewing machine to automation, intelligence, composite, integration, high efficiency, oil-free, high-speed, direct-drive rapid development.?
Information processing field ? Information technology and information industry to microelectronics technology as the core, communications and networks as a guide, computers and software as the basis. Information products and support for the information age of semiconductor manufacturing equipment, electronic devices (including information input, storage, processing, output, transmission, etc.) and communications equipment (such as hard disk drives, CD-ROM drives, floppy disk drives, printers, facsimile machines, photocopiers, cell phones, etc.) using a large number of a variety of special motors. The information industry at home and abroad are highly valued, and get high-speed development, the information field supporting the annual demand for special motors around the world is about 1.5 billion units (sets), the vast majority of these motors are permanent magnet DC motors, brushless DC motors, stepping motors, single-phase induction motors, synchronous motors, linear motors, etc.?
Transportation field ? At present, in the senior car, in order to control the fuel and improve the comfort of the car and the need to show the state of the device, the use of 40 ~ 50 electric motors, and limousines on the motor up to more than 80 sets of automotive electrical equipment supporting the motor is mainly for the permanent magnet DC motors, permanent magnet stepping motors, brushless DC motors and so on. As the 21st century green transportation, electric vehicles in all countries by the general attention, electric vehicle drive motors are mainly high-power permanent magnet brushless DC motors, permanent magnet synchronous motors, switched reluctance motors, etc., the development trend of this type of motor is high efficiency, high output, intelligent. Domestic electric bicycle in recent years the rapid development of electric bicycles, electric bicycles are mainly used wire wound coil type permanent magnet DC motor and permanent magnet brushless DC motor drive; In addition, special motors in the locomotive drive, ship propulsion is also widely used, such as linear motors used in magnetic levitation trains, subway train drive.
Home appliances field ? At present, the general family in industrialized countries use about 50~100 sets of special motors, the main varieties of motors are: permanent magnet DC motors, single-phase induction motors, series-excited motors, stepping motors, brushless DC motors, AC servo motors and so on. In order to meet the increasingly high requirements of users and adapt to the needs of the development of the information age, to realize the energy-saving household electrical appliances products, ? Motor industry job platform Comfort, network, intelligent, household appliances, the replacement cycle is very fast, the supporting motor puts forward the requirements of high efficiency, low noise, low vibration, low price, adjustable speed and intelligent. The motors used in the household appliance industry are being updated, and the household appliances driven by high-efficiency permanent magnet brushless DC motors are representing the direction of the development of the household appliance industry. For example, the popular energy-efficient frequency conversion air conditioners and refrigerators use permanent magnet brushless DC motors to drive their compressors and fans. The washing machine adopts low-noise multi-pole flat permanent magnet brushless DC motor, which can save the original mechanical reducer and directly drive the drum to realize stepless speed regulation, and it is a high-grade product in the current washing machine. Vacuum cleaner using permanent magnet brushless DC motor to replace the original single-phase series-excited motor, with small size, high efficiency, low noise, long life and other advantages.
Consumer electronics ? Jukeboxes, tape recorders, VCD video discs and DVD video discs and other audio-visual equipment, as well as high-level intelligent toys and recreational fitness equipment supporting the motor is mainly permanent magnet DC motors, printed winding motors, wire-wound disk motors, brushless DC motors and so on. Video recorders, video cameras, digital cameras and other electronic consumer products need a large number of fast product updates, these products with the motor is a precision type, manufacturing and processing difficulties, especially into the digitalization of the motor puts forward newer and higher requirements.
Defense field ? Military special motors and components of a wide range of products, specifications vary, there are nearly 10,000 varieties of its basic functions are: mechanical position sensing and indication, signal conversion and calculation, motion speed detection and feedback, motion device drive and positioning, speed, acceleration, position and precise servo control, timing standards and low-power power supply, etc.. Based on its special performance, special functions and special working environment requirements, a large number of absorption of the latest technological achievements in related disciplines, in particular, the application of new technologies, new materials and new processes, spawned many new structures, new principles of motor, with distinctive miniaturization, digitalization, multifunctionality, intelligence, systematization and networking features. Such as the traditional torpedo rudder are used to drive the rudder hydromechanical drive system for the torpedo to provide three-axis power to control the heading, depth and roll, to achieve the designed torpedo trajectory; at present, the new domestic and foreign torpedoes have been used in the electric rudder, the early electric rudder using brushed DC servo motors, but brushed servo motors inherent shortcomings to the electric rudder system for the reliable operation of the many problems. The application of small size, light weight, high power density, high force performance indicators and has good servo performance and dynamic characteristics of rare earth permanent magnet brushless DC motor is very good to meet the special requirements of the torpedo electric rudder system. At present, the defense field focus on the application and development of special motors are permanent magnet AC servo system; permanent magnet brushless DC motor; high-frequency high-precision dual-channel resolver; micro, light, thin permanent magnet DC torque motor; high-precision angular sensing motor; stepper motors and drives; low inertia DC servo motor; permanent magnet DC torque tacho unit; drive motor plus reducer assembly; ultrasonic motor; linear and direct drive motors, etc.?
Special application fields ? Some special areas of application of various aircraft, detectors, automation equipment, medical equipment, etc. use of the motor is mostly a special motor or a new type of motor, including from the principle, structure and mode of operation are different from the general electromagnetic principle of the motor, mainly for the low-speed synchronous motors, harmonic motors, finite angle motors, ultrasonic motors, microwave motors, capacitive motors, static motors and so on. For example, an ultra-thin ultrasonic motor with a thickness of 0.4 mm is used in miniature helicopters; a miniature ultrasonic motor is used in the camera system of cell phones.