What is the development prospect of the motor industry?

In order to further increase the screen area, Huawei Samsung launched a folding screen mobile phone. Although effective, manufacturing is not only costly, but also difficult.

In particular, Motorola, a fan of cold food, has proposed a folding screen mobile phone, which is naturally a folding screen, which is perfect. But the cost of making screens is still high.

In order to further increase the air gap surface area (proportional to the torque), scholars (such as Qu Ronghai of Huake and Christopher Lee of Nanyang Technology) proposed a double stator structure. Although effective, manufacturing is not only costly, but also difficult.

In particular, some scholars who like to stir fried rice have proposed that the axial flux motor, which has existed for a long time, is not naturally suitable for double air gap. It is simply perfect! But manufacturing costs are still high.

Some phones have a screen on the front and a screen on the back. However, the power consumption is so large that it is inexplicable.

There is a kind of motor called double mechanical port motor, which has two rotors, one rotor inside and one rotor outside. For example, this kind of motor can replace planetary gear in theory. But it's inefficient. What's the picture?

Huawei believes that the "4G band" between the mobile phone and the base station is too low, and it can move forward to the "5g band" of higher frequency band. (for 5g science popularization, I recommend the video released by IEEE spectrum on YouTube two years ago)

There are many problems with 5g technology after the frequency is increased.

Some of the problems are already existing, but now they are more serious. For example, 4G has higher frequency than 2G, and the wave length will lead to poor penetration. Now the penetration is even worse. In order to ensure that your mobile phone can receive the signal, a stupid way is to raze the trees and flowers of high-rise buildings.

At present, the switching frequency of silicon elements used in the inverter for motor power supply is too low. The emergence of wide band gap (not the broadband used in your home, but wide gap band) switching elements (such as silicon carbide, SiC) has realized the further improvement of inverter carrier frequency.

There are many problems in the broadband gap technology after the switching frequency is increased.

Some of the problems are already existing, but they are more serious now. For example, compared with thyristor, the chopping frequency of MOSFET is higher, the DV / DT is larger, and now it is larger. For safety, a silly way is to crazy increase the thickness of winding insulation material.

A motor manufacturer claims that its products can achieve accurate position servo control without coding disk. In fact, the hall element is hidden in the motor casing, and the coding disk is replaced by Hall element, and the accuracy is also reduced. Kalman filter is needed to supplement the waveform.

Xiaomi and oppo have launched the invisible front camera, which can't be seen in normal use. It's just that when taking photos, due to a layer of glass, it's a little sticky, so it needs to be corrected with software.

The essence of mobile phone is to transfer information between two devices by modulating signal.

Most mobile phones support Bluetooth protocol.

A Huawei mobile phone supports not only Bluetooth communication, but also near-field communication (NFC) with higher frequency band.

Google has a modular mobile phone, you can remove the Bluetooth module, install the NFC module, and then, only support NFC.

The essence of motor is to produce magnetic field to transfer energy between stator and rotor.

Most motors support the use of fundamental magnetic fields to produce torque.

A vernier machine not only supports the use of fundamental torque, but also supports the use of higher frequency tooth harmonic magnetic field to generate torque.

Linear motor is highly recommended to be modular. Because it must be fractional slot, it only supports torque generation by harmonics, and fundamental wave is not used.

The battery of Samsung note 7 will explode, but no one seems to have been killed. As a result, note 7 is not allowed to be taken on the plane.

Samsung has launched a fire-fighting vase, which usually contains flowers. When note 7 explodes, it can extinguish the fire by throwing the vase on note 7 instantly.

The Tesla Model s battery will explode, but fortunately the owner is not in the car.

The founders of ABB or Siemens were kicked out of the company. Later, the company installed and updated the software of frequency converter to reduce the bus voltage, resulting in the decrease of maximum motor speed. After it was discovered, the company launched a capacitor replacement service, but refused to transfer the software back.

ABB or Siemens insist on using advanced switching elements for their own power converters. In this way, when new products are launched, it can be said that the latest power converters use wide band gap switching elements. Sounds great, doesn't it? The expensive thing is a cent of goods! However, the fact is that this wide band gap switch element is used in the rectifier part, and the inverter part has not changed. You have to use the motor as a generator to give full play to its strength.

After Jobs's death, Apple's mobile phone actively reduced the operating frequency of the processor through software updates, causing the phone to jam, suggesting to buy a new phone. After it was discovered, it was unrepentant to launch a battery replacement service, which did not support operating system degradation.

Apple insists on using the best processor for its products. In this way, when launching new products, it can be said that the latest Apple computers use Intel's latest i9 processor. Sounds great, doesn't it? The expensive thing is a cent of goods! However, this computer has to run in the refrigerator to keep the processor running at high load. If you turn off the overheat protection system, this is a light iron plate burning device.

Some mobile phones support wireless charging, that is, the charging line is replaced by coil (inductive type) or capacitor (capacitive type).

Users have higher and higher requirements for the charging speed of mobile phones, but the speed of wireless charging is also higher

Related News

Shanghai International Fluid Machinery Exhibition

China International Fluid Machinery Exhibition (IFME) is the only and authoritative large-scale professional exhibition of fluid machinery manufacturing industry sponsored by China General Machinery Industry Association. It is held every two years. The 10th exhibition will be held in Shanghai Hongqiao National Convention and Exhibition Center from December 9 to 11, 2020. The exhibition covers an area of 530 million square meters. It is estimated that there will be more than 500 domestic and foreign exhibitors and more than 80000 professional visitors. The exhibition products include pumps, fans, compressors, valves, gas separation equipment, vacuum equipment, separation machinery, gradient speed machine, drying equipment, cooling equipment, gas purification equipment ...

The 20th China International Electrical Machinery Expo and Development Forum 2020

The 20th China International Electrical Machinery Expo and Development Forum 2020 is hosted by Guohao Exhibition (Shanghai) Co., Ltd. in order to improve the development level of the motor industry, build an industry exchange platform, promote sustainable and healthy development, realize the decisive role of the market in resource allocation and better play the role of the government, guide innovation with the market, and further enhance the independent R & D capability of China's motor industry To promote the coordinated development of China's motor industry upstream, midstream and downstream. More than 100 professional media promoted the whole process, and more than 600 enterprises including several well-known brands in the industry were invited to participate in the exhibition. Among them, more than 30000 professional visitors were invited, which was a successful and successful gathering of the electrical machinery industry. During the exhibition, a number of seminars were held with great success. "China International Motor Expo" (hereinafter referred to as "Motor China") is held to continue to serve the motor industry and promote the sustainable development of the industry. Make full use of the mode of "two exhibitions in one" of professional exhibitions and trade exhibitions, the "three in one" of exhibitions, ordering meetings and seminars, and the "four business gathering" mode of manufacturers, distributors, supporting suppliers and service providers. It is a model exhibition of international electrical machinery industry with good market pertinence, technical specialty, effectiveness reality, user group and activity characteristics, so as to truly become the motor industry market It is an activity platform to promote, display new products, exchange new technologies, release new information and explore new business opportunities. Welcome to this exhibition. With your support and participation, we will try our best to do a good job in inviting professional visitors and purchasers, and strive to provide you with valuable service and exhibition effect!   The exhibition focuses on the current situation and development direction of motor industry at home and abroad. Through the large-scale, all-round, multi-level and unified international electrical machinery industry "fair" and "exhibition", the first comprehensive exhibition platform integrating industry expo, trade negotiation and Summit Forum in China's motor industry will be built. To build opportunities for exhibition, promotion, exchange and cooperation for the motor industry projects, invite domestic and foreign motor related merchants to the meeting to carry out economic and trade negotiations and centralized contract signing, promote the docking of investment and projects, and promote the vigorous development of China's motor industry.   Guohao Exhibition (Shanghai) Co., Ltd. is a professional exhibition company engaged in large-scale international exhibitions, conferences and activities, dedicated to Promoting Sino foreign trade exchanges, with its headquarters in Shanghai, China. The China International Electrical Machinery Expo and development forum hosted by the company has gone through 18 years. After 18 years of hard work, it has become the leader of the International Motor Industry Exhibition. To join Motor China, you can Establish corporate image and establish industry status ■ widely meet more than 10000 professional audiences at home and abroad ■ release the latest product and new process information ■ contact with international purchasing group to develop overseas market ■ understand the development trend of the industry, grasp the competition opportunities ■ open the trade platform of the motor industry Exhibitor visitor statistics 33 countries and regions attended the exhibition, except from Chinese mainland and Taiwan and Hongkong, as well as to the United States, Germany, Britain, Canada, Italy, Russia, Singapore, Iran, Korea, Japan, India, Mongolia, Brazil, Vietnam, Thailand, Turkey, Indonesia and other countries. ■ 700 leading enterprises and brands participated in the exhibition; ■ 48650 visitors held business talks and activities at the exhibition site, including GE Energy, Xinjiang Jinfeng, China Shipbuilding Heavy Industry, delfock, Gree Electric Appliance, Hitachi, Siemens, Midea, Toshiba hydropower equipment, Toyota Motor, Haier, Schneider Electric Appliance, Panasonic motor, ThyssenKrupp Elevator, Bosch, etc; ■ 87% of visitors participated in the exhibition to reach cooperation intention; ■ 61% of the visitors came from major mechanical equipment, automobiles, electrical appliances, fans, etc. and motor manufacturing enterprises;

Guangzhou international industrial automation technology and Equipment Exhibition!

From August 11 to 13, 2020, SIAF will return to its new exhibition period! Smart win, double the brilliance! Rooted in Guangzhou, SIAF is an ideal platform for the industrial automation industry to establish important business relations and find new opportunities. It presents the latest automation products and solutions, so that exhibitors and visitors can find a way to win in China's strong economy and booming production industry. Pre registration continues to open! Pre registration and intelligent manufacturing!

Brake motor is also known as electromagnetic brake motor and brake asynchronous motor

Brake motor, also known as electromagnetic brake motor and brake asynchronous motor, is a fully enclosed, self fan cooling, squirrel cage type, with DC electromagnet brake attached

Developing global market with high quality and perfect service

The company strives to carry out scientific innovation, system innovation, management innovation, process innovation and other innovative mechanisms; adhering to the quality policy of "high quality, high standard, refinement, zero defect"; the company has an efficient and sound sales network and after-sales service system; to provide satisfied products and services for new and old customers is our consistent purpose.

Rainfield development and product R & D innovation

Company development history: founded in 1999 to produce AC small speed motor, speed motor company; In 2003, a gearbox with DC motor directly equipped with AC motor was developed; In 2004, trial production of medium-sized gear motor, RV series reducer, registered trademark and graphic trademark of Yutian motor in the same year; At the beginning of 2005, Siemens high-pressure fan technology was introduced from Germany to establish the fan product division, which entered the trial production stage; By the end of 2007, medium-sized gear motor and RV series reducer were put into operation and put into the market; Zhongshan Guangzhou office was established in 2008; Fujian Office was established in 2009; Guizhou office was established in 2011; In 2014, it introduced Taiwan planetary gear reducer technology, registered its trademark in childhood, and produced and listed on the market; In 2015, we developed and produced high and low temperature resistant long shaft single-stage, three-phase induction motor; In 2016, we expanded the production workshop, moved to Guizhou, and registered to establish Guizhou Yutian Electric Co., Ltd.