电气专业英语教程9
电气专业英语基础 ppt课件
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常用的前缀和后缀却多达百个，可见派生法的构词 能力是非常强的。作为一个专业技术人员，至少应掌 握50个常用前缀和后缀。
前缀（prefix）：词义变化，词类不变 后缀（suffix）：词义可能变化可能不变，词 类一定会变
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名词前缀
前缀 auto-
含义 自动，自己，自身
counterhydr(o)
专业或技术词汇 某个专业所特有的词汇，其专业性强，词义狭窄和单一。
diode ，
(二极管)
capacitor ，
（电容器）
substation ,
(变电站，变电所)
autotransformer，（自耦变压器）
superconductivity (超导特性)。
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次技术词汇
很多专业和学科所共有的词汇,不同专业和学 科往往具有不同词义 power : 幂，乘方 动力，功率，效率
名词+形容词(n+adj.) →adj.： ice-cold, network-wide 名词+副词(n+adv.)→n.，adj.: feedback
形容词＋名词（adj+n）→n.，adj.：
low-pass, high-speed, short-circuit, newtype
形容词+名词+ed (adj.+n.+ed)→adj.:
隶属于科技英语 是科技英语的一部分，以表达科技概念、理论与事实为主要 目的。遵守科技英语的语法体系和翻译方法;特别注重客观事实和真理，表达准 确、精练和正式。
是结合各自专业的科技英语 有很强的专业性，涉及的面更加狭窄，与专业内 容配合更为密切。
电气自动化专业英语 翻译 中文译文
电气自动化专业英语（翻译1-3）第一部分：电子技术第一章电子测量仪表电子技术人员使用许多不同类型的测量仪器。
一些工作需要精确测量面另一些工作只需粗略估计。
有些仪器被使用仅仅是确定线路是否完整。
最常用的测量测试仪表有：电压测试仪，电压表，欧姆表，连续性测试仪，兆欧表，瓦特表还有瓦特小时表。
所有测量电值的表基本上都是电流表。
他们测量或是比较通过他们的电流值。
这些仪表可以被校准并且设计了不同的量程，以便读出期望的数值。
1．1安全预防仪表的正确连接对于使用者的安全预防和仪表的正确维护是非常重要的。
仪表的结构和操作的基本知识能帮助使用者按安全工作程序来对他们正确连接和维护。
许多仪表被设计的只能用于直流或只能用于交流，而其它的则可交替使用。
注意：每种仪表只能用来测量符合设计要求的电流类型。
如果用在不正确的电流类型中可能对仪表有危险并且可能对使用者引起伤害。
许多仪表被设计成只能测量很低的数值，还有些能测量非常大的数值。
警告：仪表不允许超过它的额定最大值。
不允许被测的实际数值超过仪表最大允许值的要求再强调也不过分。
超过最大值对指针有伤害，有害于正确校准，并且在某种情况下能引起仪表爆炸造成对作用者的伤害。
许多仪表装备了过载保护。
然而，通常情况下电流大于仪表设计的限定仍然是危险的。
1．2基本仪表的结构和操作许多仪表是根据电磁相互作用的原理动作的。
这种相互作用是通过流过导体的电流引起的（导体放置在永久磁铁的磁极之间）。
这种类型的仪表专门适合于直流电。
不管什么时候电流流过导体，磁力总会围绕导体形成。
磁力是由在永久磁铁力的作用下起反应的电流引起。
这就引起指针的移动。
导体可以制成线圈，放置在永久磁铁磁极之间的枢钮（pivot中心）上。
线圈通过两个螺旋型弹簧连在仪器的端子上。
这些弹簧提供了与偏差成正比的恢复力。
当没有电流通过时，弹簧使指针回复到零。
表的量程被设计来指明被测量的电流值。
线圈的移动（或者是指针的偏移）与线圈的电流值成正比。
(电气工程与自动化专业英语)Chapter 9 Control Systems Basics
Text A: Concepts of Control System
As the applications of embedded computing expand, an increasing number of controller functions moving to software implementations.
Chapter 9: Add Your Company Slogan Control Systems Basics
Control Systems Basics
In this chapter, it:
• Introduces the fundamental concepts of control systems
This type of controller could be implemented with open-loop control and feedback control.
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Text A: Concepts of Control System
Open-Loop Control: For a given combination of outdoor temperature and desired indoor temperature it is possible to experimentally determine the ratio of furnace ontime to off-time that maintains the desired indoor temperature. An open-controller implementing this algorithm will produce the desired results only so long as the system environment remains unchanged.
电气工程专业英语课件lecture9-2012
Lecture 9
Overhead lines, depending on the load current, either absorb or supply reactive power. At loads below the natural (surge impedance) load, the lines produce net reactive power; at loads above the natural load, the lines absorb reactive power. Underground cables, owing to their high capacitance, have high natural loads. They are always loaded below their natural loads, and hence generate reactive power under all operating conditions. Transformers always absorb reactive power regardless of their loading; at no load, the shunt magnetizing reactance effects predominate; and at full load, the series leakage inductance effects predominate. Loads normally absorb reactive power. A typical load bus
Lecture 9
New Words and Expressions compensation 补偿 excitation 励磁 end-region 端部 surge impedance 波阻抗 leakage 漏电 incentive 动机
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Exercises
请做课后练习
练习参考答案请参阅本书附录1
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Notes
[3] Circuit diagrams had to be designed, electrical components specified and installed, and wiring lists created. 本句是英语常见的动词省略现象。本句的前半句谓语是 完整的：had to be designed。后面两个部分，分别以 electrical components以及wiring lists做主语，谓语部分的 had to be被省略。这句话补充完整应该是Circuit diagrams had be to designed, electrical components had to be specified and installed, and wiring lists had to be created.
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New Words And Phrases
brick [brik] n. 砖, 砖块, 砖形物(如茶砖,冰砖等) I/O point 输入/输出点 depend on 依靠, 依赖 counting [5kauntiN] 计数器 timing [5taimiN] 计时器，定时器 data comparison 数据比较器 PG 编程器（编程设备） STEP 7 一种PLC编程语言 protocol [5prEutEkCl] n. 协议 baud rate [5bC:d reit] n.波特率
电气工程专业英语实用教程
succeeding [sEk5si:diN] adj. 以后的，随后的 logic 0 逻辑0 logic 1 逻辑1 programmable controller 可编程控制器 BCD 二进制编码的十进制 thumbwheel switch 指轮开关 hexadecimal [heksE5desIm(E)l] adj. 十六进制的n. 十六进制 multiply [5mQltipli] v.乘,增加 remainder [ri5meindE] n. 余数adj. 剩余的 conversion of number 数字转换
Notes
[2] The hexadecimal system is used in PLCs because it allows the status of a large number of binary bits to be represented in a small space such as on a computer screen or programming device display. 本句是由because连接的因果句。在because从句中，主语 为it，谓语是allow…to…，此外还有一个词组such as举例 说明什么样的small space。结构清楚了，这句话虽然看 起来很长，实际上理解起来也不困难。
New Words And Phrases
Text
请老师朗读并讲解课文
Notes
[1] PLC is a computer. It stores information in the form of On or Off conditions (1 or 0), referred to as binary digits (bits). 本句涉及的是一个词组refer to sth as（称某物为……）。 完整的句子应该是： It stores information in the form of On of Off conditions(1or 0), which is referred to as binary digits (bits).本句省略了连词which，因此is也省略。
(完整word版)电气专业英语课后练习翻译
PART1U1T1、In addition to the various power transformers, two special-purpose transformers are used with electric machinery and power systems。
The first of these special transformers is a device specially designed to sample a high voltage and produce a low secondary voltage directly proportional to it. Such a transformer is a potential transformer. A power transformer also produces a secondary voltage directly proportional to that the potential transformer is designed to handle only a very small current。
The second type of special transformer is a device designed to provide a secondary current much smaller than but directly proportional to its primary current. This device is called a current transformer。
除了各种电源变压器、两个专用变压器使用电动机械和电力系统。
第一个特殊变压器是一个高电压设备专门设计的样品和生产较低的二次电压成正比。
这样一个变压器电压互感器。
电力变压器也产生二次电压成正比的电压互感器的设计目的是处理只有一个很小的电流。
电气专业英语
New Words And Phrases
starter [5stB:tE] n. 起动器,起动钮 actuator [5AktjueitE] n. 操作[执行]机构, 执行器 Hard-Wired Control 硬接线控制 reconnect [7ri:kE5nekt] v. 再接合 complex [5kCmpleks] adj. 复杂的, 合成的, 综合的 handle [5hAndl] vt. 触摸, 运用, 买卖, 处理, 操作vi. 搬运, 易于操纵 interface [5intE(:)7feis] n. 分界面，〈计〉界面，接口 relay [5ri:lei] n.继电器 extensive [iks5tensiv] adj. 广大的, 广阔的, 广泛的
New Words And Phrases
brick [brik] n. 砖, 砖块, 砖形物(如茶砖,冰砖等) I/O point 输入/输出点 depend on 依靠, 依赖 counting [5kauntiN] 计数器 timing [5taimiN] 计时器，定时器 data comparison 数据比较器 PG 编程器（编程设备） STEP 7 一种PLC编程语言 protocol [5prEutEkCl] n. 协议 baud rate [5bC:d reit] n.波特率
Text
请老师朗读并讲解课文
Notes
[1] A PLC monitors inputs, makes decisions based on its program, and controls outputs to automate a process or machine. 本句是个简单句。主语是PLC，谓语由monitor, make, control组成，分别描写三个行为，不定式短语to automate a process or machine做为目的状语。based on its program, 修饰 make decision，告诉我们结果是“根据程序”得到的。
电气工程及其自动化专业英语介绍
电气工程及其自动化专业英语介绍Introduction to Electrical Engineering and its Automation Major1. IntroductionElectrical Engineering and its Automation is a specialized field that combines the principles of electrical engineering with automation technology. This field focuses on the design, development, and implementation of electrical systems and automation processes to enhance efficiency, productivity, and safety in various industries. This major equips students with a strong foundation in electrical engineering principles, automation technology, and practical skills necessary for a successful career in this rapidly evolving field.2. CurriculumThe curriculum of the Electrical Engineering and its Automation major is designed to provide students with a comprehensive understanding of electrical engineering principles, automation technology, and their applications. The coursework includes a combination of theoretical knowledge and practical skills development. Some of the key subjects covered in this major are:2.1 Electrical Circuit Analysis: This course introduces students to the fundamental concepts of electrical circuits, including circuit analysis techniques, network theorems, and circuit simulation using software tools.2.2 Power Systems: This course focuses on the generation, transmission, and distribution of electrical power. Students learn about power system components, power flow analysis, fault analysis, and protection systems.2.3 Control Systems: This course covers the principles of control systems and their applications in various industries. Students learn about different control system architectures, feedback control, stability analysis, and controller design.2.4 Programmable Logic Controllers (PLCs): This course provides students with hands-on experience in programming and troubleshooting PLCs, which are widely used in industrial automation systems.2.5 Industrial Automation: This course explores the principles and applications of automation technology in industries such as manufacturing, oil and gas, and transportation. Students learn about sensors, actuators, human-machine interfaces, and industrial communication protocols.2.6 Digital Signal Processing: This course focuses on the analysis and processing of digital signals. Students learn about signal representation, filtering, spectral analysis, and digital signal processing algorithms.3. Laboratory FacilitiesThe Electrical Engineering and its Automation major provides state-of-the-art laboratory facilities to enhance practical learning and research opportunities for students. The laboratories are equipped with advanced equipment and software tools to simulate and analyze electrical circuits, control systems, and automation processes. Students have the opportunity to work on real-world projects, conduct experiments, and gain hands-on experience in designing, implementing, and troubleshooting electrical and automation systems.4. Career ProspectsGraduates of the Electrical Engineering and its Automation major have a wide range of career opportunities in various industries, including power generation and distribution, manufacturing, telecommunications, transportation, and automation consulting firms. Some of the job roles that graduates can pursue include:4.1 Electrical Engineer: Graduates can work as electrical engineers, responsible for designing, developing, and maintaining electrical systems in industries such as power generation, manufacturing, and telecommunications.4.2 Control Systems Engineer: Graduates can work as control systems engineers, specializing in the design, implementation, and optimization of control systems in industries such as oil and gas, chemical, and automotive.4.3 Automation Engineer: Graduates can work as automation engineers, involved in the design, programming, and troubleshooting of automation systems in industries such as manufacturing, transportation, and robotics.4.4 Research and Development Engineer: Graduates can work in research and development roles, focusing on the development of new technologies and solutions in the field of electrical engineering and automation.5. ConclusionThe Electrical Engineering and its Automation major offers students a comprehensive education in electrical engineering principles and automation technology. With a strong theoretical foundation and practical skills, graduates are well-equipped to pursue successful careers in various industries. This major provides opportunities for students to explore cutting-edge technologies, conduct research, and contribute to the advancement of electrical engineering and automation.。
电气工程专业英语教学内容
电气工程专业英语电路 electric circuit电气工程electrical engineering电机electric machine自然科学physical science电气设备 electrical device电器元件 electrical element正电荷positive charge负电荷negative charge直流direct current交流alternating current电压voltage导体conductor功work电动势electromotiveforce电势差potential difference功率power极性polarity能量守恒定律the law of conservation energy变量variable电阻 resistance电阻率resistivity绝缘体insulator电阻器resistor无源元件passive element常数constant电导conductance短路short circuit开路open circuit线性的linear串联series并联parallel电压降voltage drop等效电阻equivalent resistance电容器capacitor电感器inductor储能元件storage element电场electric field充电 charge放电discharge动态的dynamic电介质dielectric电容capacitance磁场magnetic field电源power supplu变压器transformer电机electric motor线圈coil电感inductance导线conducting wire绕组wingding漏电阻leakage resistance电子系统electronic system结构图block diagram功能模块functional block放大器amplifier滤波器filter整形电路wave-shaping circuit振荡器oscillator增益gain输入阻抗input impedance带宽bandwidth晶体管transistor集成电路integrated circuit电力电子power electronics数字信号处理digital signal-processing 输出装置output device模拟信号analog signal数字信号digital signal传感器transducer采样值sample value模数转换器analog-to-digital converter 频谱frequency content采样频率sampling rate or frequendy 扰动disturbance分立电路discrete circuit数字化信号digitized signal运算放大器operational amplifier有源电路active circuit电子部件electronic unit封装package管脚pin同相端noninverting terminal反相输入inverting input电路图circuit diagram压控电压源voltage-controlled voltage source 开环增益open-loop gain闭环增益closed-loop gain负反馈negative feedback正饱和positive saturation线性区linear region电压跟随器voltage follower等效阻抗equivalent impedance逻辑变量logic variable位bit数字字digital word字节byte半字节nibble与运算AND operation真值表truth table与门AND gate非门NOT gate或门OR gate加号addition sign与非门NANA gate异或运算XOR operation逻辑表达式logic expression二进制binary system正逻辑positive logic负逻辑negative logic参考方向reference direction理想变压器ideal transformer电气绝缘electrical isolation阻抗匹配impedance matching电力electrical pewer绝缘变压器isolating transformer电压互感器voltage transformer电流互感器current transformer原边绕组primary winding工作频率operating frequency配电变压器distribution transformer电力变压器power transformer磁通密度flux density磁场magnetic field铁芯变压器iron-core transformer大功率high-power空芯air-core磁耦合magnetic coupling小功率lower-power励磁损耗magnetizing loss磁滞损耗hysteresis loss涡流eddy current励磁电流exciting current漏磁通leakage flux互磁通 mutual flux线圈coil芯式core form壳式shell form高压绕组high-voltage winding磁链flux linkage电动势electromotive force有效值root mean square value匝数比turns ratio视在功率apparent power匝数the number of turns升压变压器step-up transformer降压变压器step-down transformer电动机motor发电机generator机械能mechanical energy电能electrical energy电磁的electromagnetic直线式电动机linear motor同步电机synchronous machine感应电机induction machine定子stator转子rotor气隙air gap轴shaft电枢armature励磁绕组field winding无功功率reactive power制动状态braking mode稳态steady-state相序phase sequence反响制动plugging滞后电流lagging current励磁电抗magnetizing reactance 启动电流starting current变频器frequency changer感应电势induced voltage逆变器inverter周波变换器cycloconverter换向器commutator自动控制automatic control控制器controller扰动disturbance期望值desired value压力pressure液位liquid level被控变量controlled variable 方框图block diagram传递函数transfer function工程控制process control伺服系统servomechanism流率flow rate加速度acceleration前向通路forward path补偿correction反馈通路feedback path闭环closed-loop开环open-loop输出output增益gain手动调节manual adjustment 变送器transducer误差error控制方式control mode比例控制proportional control 积分控制integral control微分控制derivative control执行元件manipulating element 调节时间setting time残差residual error不确定度uncertainty观测数据observations采样sample算术平均arithmetic average期望值expected value标准偏差standard deviation下限lower range limit上限upper range limit跨度span分辨率resolution死区dead band灵敏度sensitivity阈值threshold可靠性reliability过量程overrange恢复时间recovery time过载overload过量程极限overrange limit漂移drift准确性accuracy误差error重复性repeatability系统误差systemic error再现性reproducibility校准calibration线速度linear velocity角速度angular velocity弧度radian测速仪tachometer增量式编码器incremental encoder定时计数器timed counter稳定性stability接口interface调节器conditioner开关switch执行器actuator电磁阀solenoid valve连续控制系统sequential control system 触点contact常开normally open常闭normally closed限位开关limit switch继电器relay延时继电器time-delay relay接通电流pull-in current开断电流drop-out current电机启动器motor starter接触器contactor自锁触点holding contact整流器rectifier变流器converter逆变器inverter二极管diode阳极anode阴极cathode正向偏置forward biased反向偏置reverse biased阻断block稳压二极管zener diode晶体管transistor集电极collector基极base发射极emitter共发射极common-emitter双向晶闸管triac正半周positive half-cycle触发电流trigger circuit功率容量power capability功率器件power device晶闸管thyristor导通conduction正向阻断 forward-blocking通态on-state关断状态off-state反向击穿电压reverse breakdown voltage 漏电流leakage current电流额定值current rating漏极drain门极gate缓冲电路snubber circuit均流current sharing额定电压rated voltage可控开关controllable switch相控phase-controlled充电器charger工频line-frequency变换器converter整流rectification逆变inversion可逆调速revesible-speed再生制动regenerative barking关断时间turn-off time纯电阻负载pure resistive load脉动ripple感性负载inductance load周期time period带内部直流电动势的负载load witn an internal DC voltage波形waveform换相commutation稳态steady state交流侧AC-side延时角delay angle交点intersection电力系统power system发电厂generating plant发电机generator负荷load输电网transmission nerwork配电网distribution network电electricity天然气natural gas原理图schematic diagram锅炉boiler热效率thermal efficiency风力wind power断路器circuit breaker变电所substation故障fault过电压overvoltage击穿值breakdown value过电流over current可靠性reliability继电器relay触点contact电流互感器current transformer合闸线圈operating coil分闸线圈trip coilCircuit theory is also valuable to students specializing in other branches of the physical science because circuit are a good model for the study of energy system in general,and because of the applied mathematics,physics,and topology involved.电路理论对于专门研究自然科学其他分支的学生来说也十分有价值，因为电路一般可以很好地作为能量系统研究的模型，并且电路理论涉及应用数学、物理学和拓扑学的相关知识。