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Guangzhou Shun Ming Environmental Science and Technology cor.
Guangzhou Shun Ming Environmental Science and Technology is a professional entity specializes in environmental electro-mechanical products’ trading and engineering and technology’s application development.
After years of observing practice, Shun Ming accurate view of domestic and foreign technology gap between mechanical and electrical equipment. As the exchange of the bridge, Shun Ming focusing on introducing the world’s high-quality products and technology into supporting equipment in the domestic industry equipment products.
Prescribed for a number of domestic environmental protections along the Electrical and Mechanical authorized agent, Shun Ming distributes DC motor vehicle, automatic control of stepper motor, no leaf fan motor, household water purifiers, servo motor, home drinking straight, high-temperature sintering ceramics, filters and equipment components at the same time.
Emerson Company
Emerson Industrial Automation is a business brand of Emerson Company providing leading-edge manufacturing solutions, including mechanical, electrical and ultrasonic, it provides the most advanced industrial automation solutions for wide variety of industries around the world. The company's wide range of products and systems used in manufacturing processes and equipment, including motion control systems, plastics joining, precision cleaning, materials testing, hydraulic control valves, alternators, motors, mechanical power transmission drives and bearings.
In China, Emerson CT headquartered located in Shenzhen, Shanghai, northeast, north, east, central and southern five-driven centers covering the Chinese market. By virtue of many years in industrial automation industry-leading drive technology and a wealth of experience, from general purpose to high performance AC drives, DC motor drives, servo drives and servo motors, Emerson provides customers complete supporting solutions.
Chinese Inverter technology
Currently, Inverter technology has gradually get matured now, but the whole-machine enterprise has deficiencies in the control plane, such as in different environments, how to change the inverter compressor or air motor speed in order to achieve maximum energy efficiency and comfort maximized.
Moreover, China new fixed speed air conditioning energy efficiency rating will be the into effect on June 1, this step also prompting companies to find ways to further improve the energy efficiency of air conditioning at constant speed. An industry source said: "I have heard that some companies want to adopt brushless DC motor on the basis of frequency of the compressor to achieve energy efficiency." It is understood that currently ROHM semiconductor provide brushless DC fan motor controller BD6209FS for air conditioning. The chip was built 180 ° sine wave drive, forward / reverses function and synchronous rectification.
Why servo motor can not spread in the textile industry
The current proportion of servo application in textile industry is very low, but it is one of the important industries that use AC servo motor in high-volume in the future. From the early 90's it has been 15 years, the technological progress of textile industry is mainly to rely on conversion and theology. Only a small amount of high-end textile machinery uses servo technology, used to improve the accuracy and efficiency. Currently, there are high-end machine, self-leveling machine, the new roving machine, CNC spinning machines, sectional warping machine, sizing machine, screen printing machine and other equipment garden equipments have apply servo AC motor.
The Prices are the main factors constrained AC servo universal, although domestic products have certain competitive advantages, there are drawbacks in performance, reliability and environmental adaptability. It needs continuous improvement in brand building, service, delivery, etc.
The universal of resolver
Thinks to resolver used brushless, no - contact metal components, so it making the overall stability, reliability and anti-interference of resolver have more advantage than optical encoder, at the same time, the characters of low cost and long life span of resolver made it was widely used in various sectors. Resolver’ applications develop rapidly in recent. In addition to the traditional, requiring high reliability military, aerospace outside the field, in the industrial, transportation, and civilian areas has also been widely used.
Over the years, with the improvement of industrial automation level, with the increasingly high demand for energy saving. The application of high efficiency, energy saving significant application of permanent magnet AC motors is more extensive. The permanent magnet dc motor position sensor original mostly is optical encoder, but all these years, it quickly was replaced by rotary transformer.
The success stories of domestic servo manufacturer
We can see the success stories of domestic servo manufacturer, one is in the industrial sewing machine, in recent years, by virtue of the low cost motor, the number of simple and low line encoder and integrated control and drive, homemade servo motor system gradually replaced Taiwan and other import brands servo controller and become the market mainstream. After the settlement stability in bulk, domestic brands such as Shanghai Baomaikesi has gained succeed.
Another successful case is ‘luosiji’ control company, this company fully use of their stepper, brushless, servo, motion control, network communications and other aspects of integrated technologies, through close cooperate with domestic largest textile group, successfully develop sophisticated yarn. The successful development of the product fully reflects the competitiveness of domestic manufacturers; it has opened up a new path to take part in market competition for domestic servo makers.
The application of Resolver in servo systems has become a trend.
In the appliance, whether it is refrigerators, air conditioners, or washing machines, currently all develop to the direction of frequency shift, they all using the sinusoidal control of permanent magnet AC motors. Currently, among the electric vehicles many countries pay great attention, electric vehicles used in the position, speed sensors are all rotary transformer .For example, drive motor and generator location sensing, location of electric power steering motor speed sensor, gas valve angle measurement, measurement of the angular position of the vacuum chamber transmitter, etc., are all used the resolver. In pastic pressure applied to the system, textile system, metallurgy system and other areas, the key components of servo system that servo motor applies is rotary transformer. Resolver’ application in servo systems has become a trend.
Shanghai shuangying Motor Co., Ltd.
Shanghai shuangying Motor Co., Ltd. is a professional dual-motor development and production of rotary transformers and special motor products high-tech enterprises. The personnel of Company Technology Research Center mainly consist of number of industry experts and young technological backbone who engaged in motor researching for decades. R & D team technology is skilled, the production technology is mature and the testing equipment is advanced and accurate, it can quickly meet customer’ demand.
The business scope mainly includes rotary transformers, micro motor, brushless motor, servo motor, stepper motor and special motor. These products have been widely used in elevators, packaging machinery, textile machinery, plastic machinery, printing machinery, instruments, machine tools, hybrid cars and many other areas, the technical performance level of products in the domestic leading level.
Micro Permanent Magnet DC Motor
The first Prototype of motor in the world is permanent magnet motor, but because the permanent magnetic materials that time with poor performance, so electromagnetic motors have been accounted for the mainstream. The birth of alnico permanent magnet made the permanent magnet motor to start the advent of development, but because of its relatively high price, so Alnico permanent magnet motor’ application surface is not wide. Since the emergence of low-cost ferrite permanent magnet motor, the application of permanent magnet motor has increased substantially, the application fields of the motor from toys, video motor, and micro motor vehicle to a small power-driven industrial and servo drives. According to statistics, the DC motors below 500W accounts for 92% of the permanent magnet motor, most of which is ferrite permanent magnet motor. Ferrites is still in use today, but because of its minor magnetic properties, and are not suitable for the needs of high-performance motor, Which appeared rare earth samarium cobalt permanent magnet in the 20th century, its maximum energy is four times as Alnico. The emergence of samarium cobalt permanent magnet made high-performance servo motor to be achieved.
Industry application of servo motor
In the field of robot, a large number of brushless permanent magnet servo systems have been applied. Industrial robots have multiple of freedom degrees, each industrial robot requires 10 or more motor, the annual growth demand for robots are more than 30%.the servo system International industrial robot used is proprietary systems. International robot giant has its own dedicated facilities servo system, such as Yaskawa, Panasonic and ABB, the domestic gap in this area is significant.
Domestic manufacturers of industrial robots are still adopting standard import ac servo system, domestic servo system to enter into industrial robots equipment area to be more distant. However, we also see some special robotics field, such as anti-terrorism robot explosion, mine rescue robot lightweight mobile robot, they also using domestic micro brushless servo systems. Of course, in the broader robotics field, it requires more than just AC servo motor, also includes a variety of other micro motors, such as DC servo motors, linear motor, tachometer, resolver, torque motors.
Domestic economic Permanent Magnet DC Motor
Mainland China has imported nine audio audio-visual motor production lines from Japan, it not only withstand the impact of imported motor, but alsobecome the largest producer of such motors. Such as Fuyang Qingfeng Machinery Plant has introduced electronic stability Mabuchi permanent magnet DC motor speed production lines and production technology from Japan Mabuchi Sankyo Co Ltd, it also founded a joint venture named Shenzhen Hair Micro Electric Corporation in Shenzhen, the whole production up to 300 million units per month. Besides, other groups such as Zhejiang seamounts, Changzhou micro motor plant and other manufacturers also have introduced production lines from abroad. At present, the production of economy micro DC motors is 2 million units, while owned- enterprises’ production is estimated about 10 million unit. Therefore, economy Micro DC Motor’ production in mainland China accounted for most of the world's total. These economic motor is not difficult in technically, but the scale of production must have certain number.
AC Servo System
AC servo system includes AC servo systems based on asynchronous motor and AC servo systems synchronous motor based on induction motor.
1800 battery’ invention is the beginning of electrical motor, the birth and development of motor can be divided into several stages after that. . From the 20th century until the 1970s is growth and maturity period of motor, there are brush DC motors, induction motors, synchronous motors, stepper motors and other motors have been born. Then the introduced of the semiconductor-driven technology and the concept of electronic control have bringing the practical of frequency driven.
From the 1970s to the late 20th century, the rapid development of computing technology brings opportunity for high-performance drive systems. With advancement of the design, evaluation, measurement, control, power semiconductors, bearings, magnetic materials, insulating materials and the manufacture technology, Motor body experienced lightweight, compact, high efficiency, high torque output, low noise and vibration, high reliability, low cost and a series of changes, and the corresponding drive and control devices are also more intelligent and procedures.
Fixed-frequency air-conditioned adopt DC brushless motor
Although the general energy-saving level of air-conditioning has been confirmed after the compressor and heat exchanger is confirmed, the motor like we usually wind tunnel called "the last straw breaks the camel". During the coming year, brushless DC motor on the application of the fixed-frequency air-conditioning will be "eyes of the beholder, the wise see wisdom’, but in later years, the applications of brushless DC motor will blowout. Brushless DC motor needs controller to control the operation of the motor, which will bring new opportunities for semiconductor companies. In past, the dedicated chip of motor control mainly concentrated in the hands of Japanese suppliers, however after the controller using MCU (MCU) or DSP (digital signal processor), there will be more semiconductor companies benefit from it.
Electric cars
Electric cars are driven by the electric source and electric motor. In recent years, the research of high-performance batteries and fuel cell has made significant progress; there have appeared electric vehicles that meet the requirements of users in a certain extent. However, there are many technical issues on the price of electric vehicles to be resolved.
Drive Technology: DC motor is suitable for drive motor and its control system is simpler, but the drawback is the high cost, weight, and inertia of rotating part of the AC motor is the 3-5 times as the same capacity ac motor. Therefore, as to the car need for frequent acceleration and deceleration, the energy consumption in inertia rotating part of added, so it only be used by some part of the light-class electric vehicles. So most of people think that drive system, AC motor is the best option, the maximum efficiency have reached 96%, and the optimization with variable speed drive system has been developed.
Brushless DC motor controller bring business opportunities for chip industry
After duct fan use DC brushless motor technology, it need controller to control the operation of the brushless DC motor, which brings new business opportunities semiconductor companies.
In fact, currently the people drive brushless DC motor technology most actively is not motor manufacturers, nor air-conditioning manufacturers, but semiconductor manufacturers." Domestic air-conditioning R & D analysts said, although the gross margin of DC brushless motor is higher than the traditional motor, in a sense, the motor manufacturers are working for semiconductor companies, the gross of new motor technology profit margin is not as high as the brushless motor controller. Moreover, the demand for the controller chip in the air conditioning industry has been changed. Controller is mainly dedicated MCU / DSP two kinds. In the early days, the motor manufacturers have integrated chip in the motor controller, they generally choose dedicated control chip. But now, some air conditioning companies want to put the controller at the outside of the motor, especially for fixed-frequency air-conditioning, such trends are becoming apparent.
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