beepmotor

Servo motor ’s rotor is permanent magnet, the U / V / W three-phase power of drive control form Electromagnetic fields, the rotor rotating under the effect of this magnetic field, at the same time, the motor comes with encoder feedback signal to the drive, the motor driver based on the feedback value and target value to compare and adjust the angle of the rotor rotation. The accuracy of the servo motor depends on the encoder’s accuracy (number of lines). What is the difference between the function of AC servo motors and brushless DC servo motor? Undoubtedly, AC servo is better, because it is sine wave control and the torque ripple is small. DC servo belongs to trapezoidal wave. But the DC servo motor is relatively more simple and cheaper.

Since from 80s of 20th century, with the growth of integrated circuits, power electronics and AC variable speed drive technology, permanent magnet AC servo drive technology also gain outstanding development, a large number of well-known electrical motor manufactures from various countries in succession to launch their own AC servo motor and servo drive products and continue to improve and update their themselves products. AC servo system has become the main development direction of contemporary high-performance servo systems, it make the original servo DC motor facing the crisis of being eliminated. After 90s, AC servo systems that have been commercialized by the world’s various countries adopt sine wave motor servo drive of digital control system. The development of AC servo drive devices is rapid in the transmission field.

Normal operation of the servo motor, as long as the loss of control voltage, the motor will stop running. After servo motor lost the control voltage, it is running in single-phase state of affair, due to rotor’s resistance is large , stator rotating in the opposite direction of the role of rotating magnetic field generated by the rotor torque characteristics of the two (T1-S1, T2-S2 curves ) and the synthesis of torque characteristics (T-S curve), the output power of AC servo motor generally is 0.1-100W. When the power frequency is 50Hz, the voltage has 36V, 110V, 220,380 V; when the power frequency is 400Hz; the voltage has 20V, 26V, 36V, 115V and so on. The running of AC servo brushless motor is smooth and the noise is low. But the control characteristics are non-linear.

Vera and I were colleagues and we worked in the health center of our village. Her mother and my aunt were good sisters. My aunt did not have to work and often helped her mother to look after her supermarket. One night, her mother boiled up many dumplings and asked Vera to give some of them to my aunt. Vera took it to the health center and asked me to send them to my aunt. I rode my atest electric bicycle and sent them to my aunt’s house. My aunt ate two dumplings for one time. I admired her very much; because she could eat so much, no wonder she was so fat and tall. My uncle was one of the shareholders of bldc motor manufacturers and was very busy every day. He was also very fat and had a big head; many of the villagers nicked him “big head” and he never got angry. My aunt often prompted me to find a girlfriend every time she saw me. I said nothing and rode the brushless motor electric car to the center after she ate up. I had to return the plate to Vera, who was busy with calling her husband when I arrived at there.

Currently, many foreign electrical motor companies choose to set up wholly foreign-owned enterprises or Joint ventures in china, such as Mabuchi Motor Dalian Co. Ltd. that Mabuchi Motor Company established in Dalian and Dalian Mabuchi and Mabuchi Motor Co., Ltd. Wafangdian Hong Kong companies set up processing factories in Dongguan, the production accounted for most porpotion of its headquarters. Japan Sanyo Electric Co., Ltd. established a company in Shekou and invested 100 million HK dollars for it, and the annual output of DC micro motor is 60 million units. Japan Sankyo Seiki separately established owned enterprises in Xiamen and Guangdong, with an annual output of various micro DC motors up to 2 million units. Although the production is surprising, these motors basically are cheap motor.

Time had passed so slowly since I could not see him for a month and I would be very happy if I could see him for one time. He was unpleasant to meet me and I had no way. I only felt I was extremely sad when he said that he had nothing said to me at the door of the electric brushless motors factory one day. It was the first time that I had seen such calm and good-tempered person. I was so anxious to see him, but he was so indifferent. I could not bear and was nearly driven mad, but he was still so calm. I turned round and went into the advanced dc motors workshop. I really admired his calmness. I wanted to get angry in front of him, but I could not. It was a harmonious society and I did not want to make our relationship stiff. I rode my best e bike home after work and I had been thinking what he was angry. I really did not figure out and he had become more and more elusive to me. I hoped we could be as good as before one day, so I could not go angry, I had to tolerate and calm down.

There had been a lot of things went wrong with me and I was afraid I could not overcome the difficulties. He betrayed me and I could not accept the fact anymore. I was a person of heavy feeling and as long as I fell in love with a person, I could not extricate myself from it. My Kllmorgen brushless motor had been broken and I needed to buy a new one, but I was lack of money. When I was sad to the extreme, the doctor told me that I was down with cholecystitis and I had to have an operation as soon as possible. How should I do? I did not know. He had promised to buy me the best electric bike very long ago, but he did not buy it. I was disappointed and did not want to ask his help anymore. But there was nobody except him who could help me at that moment. I dialed his number and he answered, saying that he was busy in his bicycle electric motors factory and then hung my telephone before I asked for his help. I sent a short message to him, but he did not reply. I called him many times afterwards and he did not answer.

The devices of brushless motors can be used in the dairy industry, brewing industry, meat processing industry, soybean processing industry, beverage processing industry, bakery processing industry, pharmaceuticals, electronic precision factory, and some more demanding clean workshops and so on, such as electrical production of Dior- brushless motor (DIHOUR) hands dryer, most of brushless are applied in factories. Compared with brushless motor, Brush motor only applicable to various types of toilets and other areas of the requirements that with not too high requirements and it can not use in complex workshops such as free workshop and the workshop proof…….. It is worth mentioning that the noise brush motor sends out is much higher than the brushless motor’s, and with the future of the carbon brush wear, brush motor noise will become increasingly large, and brushless motor would not be affected.

The rather hige price of Samarium cobalt permanent magnet limited the application of it. In 80s of the 20th century there were appeared NdFeB permanent magnet materials, in addition to temperature and magnetic temperature coefficient of less than samarium cobalt magnet in vitro, other properties also excess samarium cobalt, and the price of neodymium iron boron permanent magnet was much lower than the price of samarium cobalt. High-performance permanent magnet’s emergence and the continuously improve performance will cause great changes in the motor industry. Many people expect that various servo motors , no matter dc motor and ac motor , or stepper motor will eventually be replaced by permanent magnet motor, evenly the application fields wide motor- AC induction motor ultimately will be replaced by permanent magnet motor.

Brush motor currently are adopted by a large number of domestic electric bike manufacturers, it uses brush as the two contacts of the motor power and uses speed controller to control the transfer to surpass second gear and the clutch gear to achieve the electric bike 0 - 20 km / h, steeples. These brush high-speed motor currently used with high gold content, the motor reduction gear strength is strong and the designation is reasonable, therefore the failure rates is lower; at the same time, gear and motor repair and replacement costs is less, which effective to reduce the electric bicycle maintenance costs; and brush motor can clutch and flywheel for easy human riding. Brush motor controller is used mechanical brush for the commutation.

Sam knew a lot and many of his friends often consulted him about all kinds of problems and he would give them satisfying solutions. He was one of my best friends and I often asked for his help when I came across difficult problems. He was the leader of the brushless motor controllers workshop in a factory. He was so outstanding that he had become the object of admiration of many ladies and was very popular among them. Every woman wanted to find an excellent gentleman and stay with him all her life. There was no exception to me. I worked in a brushless dc electric motors factory. I had been attracted by Sam completely and he was my ideal husband. How I wished he had not gotten married and then I would have the opportunity to run after him. I rode my diy electric bicycle home after work every day and began to image the life I stayed with Sam. But I had no chance to live with him in my life. He was the standard of my seeking a boyfriend and I would find one like Sam.

My heart fell into the ice through ten thousands of years when he said that he would no longer take care of me and I could do everything at my random one day. That was not his previous style and he had always spoiled me very much before and why he should have said such sad words to me that day in the electric brushless motors factory. I would not be used to being taken care by without him. I liked him to give me advices when I encountered troublesome; I liked him to ask where I was after I got off work; I liked him to ask me whether I had had dinner. I often stopped my power e bike at the roadside and bought a dessert from his snack bar after work, because I could meet him there. He ogled to me and smiled, I smiled too. I was content very much. I rode a hub motor bicycle of my colleague’s home one day, but I did not see him at his store and kept on bothering him by calling him and he was disgusted with me finally and said those words to me.

In order to meet him for the last time, I found him everywhere in the streets after he told me that he was close to me when I called him. I asked him to go to meet me, he said he would not; I asked him why, he said there was no reason. My heart was broken when I heard his words. I had resigned the job in the brushless dc electric motors factory and was going back home. I only wanted to meet him for the last, but he was unpleasant. I did not know why he hated me so much; after all, we were friends for three years. I thought there should be no hatred between people in the world. I rode my brushless ac motor electric car after he hung my telephone and started to find him in the streets. I looked all over the whole city, but I could not see his shadow at all. He did not answer my telephone and I knew I could no longer meet him again. I rode my electric bike bicycle, going home disappointedly. I knew that everything had been over and I had failed completely.

I wished I could overcome the difficulty and became a lively and open-minded girl that I was before. But I had no confidence at all. I was a girl of sharp tongue and soft heart. I was very fragile at the bottom of my heart and could no longer bear any hit. I was very afraid being injured and I did not want to love again. We knew each other in bldc motor controllers factory and he attracted me completely one day. I wanted to see his smile and talk with him every day. I knew I had fallen in love with him deeply. He also made me laugh and joked with me. I was very happy and my everyday life was full of sunshine. I rode my electric bicycle very early every morning and could not wait seeing him. It was the first time that I had that kind of strong feeling. I was happy as long as I could see him. But he did not speak to me one day suddenly and I did not know why. I took another job in a bicycle electric motors factory. I had lost my confidence towards life and was in low-spirited every day.

I really did not know how I could forget him. He had occupied my whole world since I knew him. He had brought me much happiness and given me a lot of comfort when I was in bad mood. But now everything had changed and he would no longer take me to have a joyride on his best electric bicycle on the boulevard where we would go every weekend. The time we spent together was the happiest moment and the quickest. How I hoped the time stopped at that happy moment and how I wished we could go back to the past. I could not settle down in the brushless rc car motors factory since we broke up. I was unpleasant to talk with anybody and did not want to do anything and could not do things well every day. I closed myself from the outside world and was down with schizophrenia one day. I rode the electric bicycle in the streets and was knocked down by a car. I was sent to the hospital. When he knew that I was sick, he did not pay attention to me at all. He was the cruelest man in the world.