桂林航天工业学院毕业设计英文资料翻译专业：电子信息工程技术姓名：黄莉珊学号：201004520121指导教师：潘丹青20 13 年 5 月 10 日英文翻译要求：1．要求所选用的英文资料必须是专业技术资料。

2．必须附上英文资料原文。

3．英文原文和翻译的中文格式、字体同读书笔记。

4．用A4纸打印，装订后放入档案袋交指导教师。

桂林航天工业学院电子工程系Reading notes: power electronic technology By reading the power electronic technology, I realized, power electronic technology is a new and applied in the field of power electronic technology, is the use of power electronics device (such as thyristor, decision, IGBT, etc.) for power transformation and control technology. Power electronics technology "power" of the transformation power but to hundreds MW even GW, can also be small to a few W even below 1 W, which is mainly composed of information processing and information electronic technology power electronic technology is mainly used in power transformation. And power electronics technology is divided into power electronic device manufacturing technology and communication technology (rectifier, inverter, chopper, inverter, a disguised form, etc.) two branches. In the module power technology, reading, I learned that power electronic technology is the use of power electronic devices to realize industrial scale electrical energy transformation technology. In general, it is a form of industrial electrical energy is converted into another form of industrial electricity. Will, for example, communication can transform electrical energy into direct current or dc can transform into ac electricity; The industrial frequency power conversion equipment for the required frequency of power supply; In the normal ac power is interrupted, using inverter (power converter) battery dc can transform into power frequency ac electricity. Application of power electronic technology can realize the conversion between electric energy and electric energy. For example, the use of solar cells convert solar radiation into electricity. With the electronic technology, power electronic technology transform electricity as energy rather than as a carrier of information sensing. So people focused on the conversion of electrical power.Reading notes 2: electric fan speed control method is discussed Fan speed control function is one of the basic function of the electric fan, is also one of the important ways of energy saving. Fan speed control methods based on the use of the motor. Single-phase capacitor motor and cover pole motor of the electric fan, electricity KangFa by tapping method, capacitance method and electrical method for speed control. Tap adjusting speed, reaction speed and capacitance is the basic principle of speed regulation by changing the winding each v number of turns to speed the reduce winding voltage to reduce magnetic field strength to realize the speed control.Tap method used more widely, it is characterized by less consumption, with makings provinces, light weight, but the winding, wire, wire is more complex, use scope is limited to a certain. Tapping speed regulation of motor has a primary winding, the middle three kinds of coil winding and the auxiliary winding. According to the middle winding connection position is divided into L, T, H. Desk fan, wall fan, floor fan adopts the tapping speed control method is more, as the raw material price fluctuations, however, due to insufficient number of turns of the fan motor winding, affected each fell down a winding circle number, lead to speed than can not meet the standard requirements.Reactor control method through the string into the different inductive reactance value of reactor per volt changing winding circle number to speed, it is the feature of each block speed adjustment easy, winding is simple and convenient maintenance; Disadvantage is can't follow one's inclinationsly regulation.Capacitance vice winding speed regulation method is by changing the voltage phase Angle of the relationship between indirect change main winding voltage to control the size of the motor windings to produce torque, achieve the purpose of regulating the main winding is constant voltage, and vice winding is a variable. Capacitance of governor at low cost, light weight, electromagnetic noise is small, but the short service life and low speed gear is hard to start. Ceiling fans and fan due to installation position limits, most use reactance or capacitance timing.Electronic governor is to use semiconductor principle of silicon controlled rectifier, it by changing to the two-way thyristor controltrigger pulse duty cycle, to realize the two-way thyristor control conduction time, to achieve control motor windings to produce torque, the length of time, to control and change the fan speed. Its characteristic is to adjust the size of the wind speed is not restricted, no class, which can realize the infinite speed adjustment, but the cost is higher.By comparing found that electronic speed mode relative to other control mode has the infinite speed adjustment and speed control effect good characteristic, is the electric fan preferred way of speed adjustment.Reading notes three: modern design method and development status of electric fansA, fan development present situation and the existing problems in the design(a) fan development present situationCompared electric fans and air conditioners have many advantages, it is smaller than air conditioning energy consumption, especially with the deepening of the international energy shortage and the concept of energy conservation, the electric fan is more valued. In addition, the electric fan blowing more natural, open doors and Windows are unaffected, and air conditioning room is closed, air circulation is poor, very susceptible to disease. Thus, electric fan also has the very big development space.(2) the problems existing in the electric fan in the designElectric fan to circulate on the market at present although many, but they shape is the same, the lack of new idea. On the color and material, also don't have much innovation. Although some cartoon appearance of the electric fan looks really beautiful, colour also is very rich, but will find it is always lack of a certain culture. With the improvement of people affected by education level, culture contained in the product concept is very important. For electric fan product, if it has good use function already, and have a elegant appearance style, at the same time, there is a deeper cultural connotation, it must be one of the most popular.From a functional point of view, at present most of the function of the electric fans are single, can't achieve "mastering many skills while specializing in one", this often leads to the waste some materials and space. If the electric fan to install other functions, thus realized muchfunction, convenient use, and saves energy, will bring great benefits.Second, the modern design methods are used in fan designIn today's market development is more and more mature, fan products involved in many disciplines and industrial categories, with the traditional design method is difficult to achieve. Therefore, for modern electric fan products, its design idea and design method are there will be some new content. In this paper, based on this starting point, from the view of development, the modern design method combined with fan products design, emphatically introduced the modular design, virtual design, product design and application of green design in electric fans.Reading notes three - electromagnetic compatibility designof electronic equipmentElectromagnetic compatibility discipline involves theoretical basis including mathematics, electromagnetic field theory, the antenna and the radio waves propagation, circuit theory, signal analysis, communication theory, materials science, biology, etc., so the electromagnetic compatibility discipline is a sharp comprehensive discipline, is closely related to the industrial production and quality control at the same time. Electronic equipment electromagnetic compatibility is a complex task, there is no universal method. In the practical work, to ensure electromagnetic compatibility of electronic devices to the organization and management method and technical methods including frequency band. Methods such as proper arrangement of spatial location of the electronic equipment to implement comprehensive administration. And including the system engineering method can be used on technology, circuit design techniques using a variety of methods of protection means. Electromagnetic compatibility treatment method has solved the problem, the standard method and system method, the system is using electromagnetic compatibility forecast model and the database. In each design phase and correct design methods, in order to achieve the optimal design. The work needs to be based on the standard method to build accurate digital models, a batch of data accumulated by testing to meet the requirements.Reading notes four: MC6805 microcontroller based electricfan controllerOne, the system overall designMC6805 by single-chip microcomputer, the system function keys, zero passage detection circuit, power supply module, infrared sensor module, display module, the basic modules such as SCR trigger circuit and the motor. Among them, the core part is SCM MC6805 governor.Wind can be divided into: strong, middle or weak and natural 4 files, each file can be stepless adjusting scope of a wind. This state can be stored for later use and into the sleep state as the initial parameters selection; Can at any time, 24 hours a day and night time start-up and timing shutdown, can be "strong breeze, stroke, weak wind, natural wind, stop" in any combination. According to timing sequence automatictime-sharing control, and the wind run length, the wind is too small to set up and adjustment.Second, the hardware designThe design with MC6805 SCM as the central processing unit, using infrared emitting and receiving device and key to realize various functions of start-up and shut down, and can implement remote control for a variety of functions; Using the controllable characteristics of two-way controlled, by controlling the bidirectional thyristor conduction realize four file wind stepless speed regulation, and can realize common wind, imitation of natural wind and sleep the conversion of the wind.Reading notes 5: the development of the intelligentelectric fan controllerThe overall design, selection of the key chip and characteristics In order to realize the intelligent control of the electric fan, an important question is how to select the appropriate microcomputer chip. The characteristics and requirements of intelligent control on the one hand to clear electric fans, on the other hand to all kinds ofmicrocomputer chip performance, price, etc. A comprehensive understanding. As household electric fan intelligent controller for small size, high reliability. After comprehensive comparison, we choose the suitable for electrical appliances consumer products and simple instrument control MC6805 microcontroller. It is suitable for large amount and area wide, price is low, and is itself a minimum system, don't need to extend any chip. MC6805 capacity of MCU in the RAM and ROM has been able to meet the requirements. Because of using unique optimization design of software and hardware, and give full play to the superiority of microcomputer, the intelligent controller has the electric fan to all control functions, wind patterns, timing closure, and infrared remote control operation function.Second, speed regulation principleHousehold electric fan motor is single-phase asynchronous motor, stator winding inductance and external of the phase-shift capacitor basic remain unchanged. Previously used in the speed regulation method is by changing the concatenated in the motor stator coil winding inductance coil inductance or by changing the concatenated motor stator coil winding on the size of the resistance to implementation. The intelligent controller is by controlling the ac voltage on motor stator coil of the method to realize the speed control of the conduction phase Angle. Within 0 ~ 180 when the conduction Angle variable hours, flowing through the motor stator coil current of effective value increases, motor speed faster. When conduction Angle greaten, flowing through the motor stator current effective value of coil is reduced, the motor speed slow down. Using this method has the advantage of speed regulation, can realize multistage speed, small volume, microcontroller is available; The disadvantage is strongly grid interference.Reading notes 6: LED digital tubeLed digital tube (led Segment Displays) is composed of multiple leds encapsulation together "eight" word, lead has been completed in the internal connection, only need to draw out their each stroke, public electrode. Led digital tube commonly used some of the other number is generally 7 paragraphs with a decimal point, and one is similar to the 3 + 1 "model. Digits half a bit, 1,2,3,4,5,6,8,10 bits and so on... According to the connection of leds, led digital tube different divided into two categories, a total of Yin and Yang, to understand these characteristics of leds, the programming is very important, because of the different types of digital tube, besides they have differences in hardware circuit, programming methods are also different. Figure 2 is a total of Yin and anode digital circuit inside the tube, they glow of principle is the same, just different from their power supply polarity. Color has red, green, blue, yellow, etc. Led digital tube is widely used in instrumentation, clocks, station, home appliance, etc. Selects when should pay attention to product size color, power consumption, brightness, wavelength, etc.LED digital tube to normal display, driver circuit to drive the digital tube in each section of the code, which shows we are digital, so according to the different methods of LED digital tube driver, can be divided into two categories, static and dynamic.Reading notes 7 - journal of solid state electronic devices Borrow the book's main purpose is to want to learn from another Angle based components diode, triode and so on, you know, most of the domestic mold electric books speak these foundation, don't always jump drive theories, terminology, kang hua or TongShiBai teacher already speak like that, I still don't understand, or cannot achieve mastery through a comprehensive study, cannot be skilled use in the actual work. So, to seek a new Angle to understand these, then, go to the library to borrow this journal of solid state electronics, listening to what the title seems to be electronic, atomic, it focuses on the basic operation principle of the device, device manufacturing processes will also be introduced.1. Made of p-n junction main process stepsThe Si surface oxidation - coated orthogonal - out of exposure and development by mask A photoresist to remove RIE etching window of SiO2, boron injection through the window - > remove photoresist and sputtering A1 - on the surface with photoresist mask box B) repeat steps 2 ~ 4, keep contact hole in A1. (for the chip or the signal integrity, these most basic process should be to know, so that you know what is introduced, what impact, etc.)Before talking about equilibrium in the PN junction to write down two concepts: diffusion and drift. From the high concentration area to the low concentration region is called diffusion. Vice is called drift.Because of holes and electrons drift and diffusion current component formed four flows through the knot, the equilibrium state (no external incentives, device in no net current flow), the sum of the four component is zero.Eight - electronic technology professional English readingnotesWith rapid science and technology level, the development of computer, electronics, communication technology by leaps and bounds. International electronic age has become more and more near to us, therefore, learn good English, especially professional English now of college students is very important to us. Through the study of the book let me understand many of the popular home appliances using electronic professional knowledge, at the same time, according to the study of this book, let my English grammar in imperceptible in has been great progress. Book content, vocabulary, and grammar is based on the principles of stair climbing, distinguished, each unit grammar explanation in detail, at the same time also do a full text translation. For the students with poor English foundation, the beginning to the book it will be less difficult. At the same time, involved in the book to the content is now more popular electronic products and electronic professional knowledge. It not only introduces the performance characteristics of electronic products to us, also introduces the development of electronic products to us, it is better for us to know the product is a big help. Most important of all, the book can let me learn to the vocabulary of many new electronic professional, this for my future study and work are very big.Nine - reading notes "electronics manufacturingtechnology"By reading "electronics manufacturing technology", the book let me learn many knowledge in electronics manufacturing. This book starting from THT - SMT electronic components, machine electronic products was introduced in detail the material in the manufacturing process, equipment, method, process and management issues. Particularly with the book with multimedia teaching VCD film, with a lot of the scene to film, animation, analytical method of electronic products manufacturing industry of our country vivid description, solve the problem that the general teaching methods is difficult to accurately is introduced. Through this book, I learns the basic knowledge of electronic components. Main parameters such as electronic components, electronic components inspection and screening, naming and annotation, etc. Know the SMT some basic knowledge, at the same time, also know that the manufacturing of electronic products commonly used materials and tools, learned the design and manufacture of printed circuit board, to master a certain welding technology. Understand the electronic product manufacturing process, at the same time, also learned some kinds of electronic products manufacturing process management and quality management, etc. Through the study of the book that I can learn theoretical knowledge applied to practice. For his later can better work to lay a solid foundation.10 - reading notes "modern instrument power"Advanced equipment is dependent on the higher power, while the instrument power is usually the majority with switching power supply. Switching power supply technology belongs to the power electronic technology, it use the electricity power converter process with change, through the transformation of power can meet various requirements. Due to its high efficiency, energy saving can bring huge economic benefits, and rapid popularization have been obtained. In equipment power supply, communication new intelligent switch power supply system is the host of communication power supply system directly, in a broad sense, it includes ac uninterruptible power supply and dc uninterruptible power of two parts. Growing with the development of communication, communication network, its status in the entire national economy have become more and more important. The impulsion - passage of a communication system switching power supply, other place also is increasing day by day. Communication equipment of switch power supply of demand is higher and higher, continuously appear all sorts of new type of power supply. Such as phased type, chenghua linear regulated power supply, regulated power supply set emerging intelligent switching power supply, no electricity power, solar power and program-controlled power supply has begun to used in communication equipment.。