电气工程及其自动化专业内涵丰富，涉及面广，且国际交流与合作越来越丰富。本书从适应高等学校电气工程及其自动化专业英语的教学需要出发，较全面地涵盖了电气工程及其自动化专业英语的相关知识。本书兼顾内容的实用性和易用性，全书共分9个单元，主要内容包括：电子电路基础、电力电子、电机、电力系统、电力生产、自动控制、传感技术、计算机网络与网络控制及信号处理与通信等。本书内容丰富，取材新颖，重点突出，与专业课程结合紧密，充分反映现代电气工程及其自动化技术的发展实际，实用性强。单元由课文、单词与词组、注释、科技翻译技巧与方法、练习等部分组成。为方便阅读和理解，在编排上各单元相对独立，每节后附有新专业词汇和重点句解析，同时在书后附有习题答案和参考译文。为了方便教学，本书另配套电子教案、授课建议和词汇总表，向采用本教材的教师免费提供。
杨勇，男，博士，教授，控制理论与控制工程。本科毕业于重庆大学，硕士毕业于湖南大学，博士毕业于中南大学。现任广东技术师范学院自动化学院教师。
目 录
Unit 1 Fundamentals of Electronic
Circuits 1
1.1 Introduction to Circuit Theory 1
New Words and Expressions 4
Notes 4
1.2 Analog and Digital Circuits 5
New Words and Expressions 11
Notes 11
1.3 Three-Phase Circuits 13
New Words and Expressions 17
Notes 18
1.4 Further Reading 18
Reading Amplifiers and Their 目 录
Unit 1 Fundamentals of Electronic
Circuits 1
1.1 Introduction to Circuit Theory 1
New Words and Expressions 4
Notes 4
1.2 Analog and Digital Circuits 5
New Words and Expressions 11
Notes 11
1.3 Three-Phase Circuits 13
New Words and Expressions 17
Notes 18
1.4 Further Reading 18
Reading Amplifiers and Their
Applications 18
Translation Methods and Skills of EST
(English of Science and Technology)
——科技英语翻译方法与技巧：省略法 21
Exercises 23
Unit 2 Power Electronics 24
2.1 Introduction 24
New Words and Expressions 25
Notes 26
2.2 Power Semiconductor Devices 27
2.2.1 Diode 28
2.2.2 Thyristors and GTOs 28
2.2.3 Power MOSFEETs and IGBTs 29
New Words and Expressions 30
Notes 30
2.3 Power Electronic Converters 31
2.3.1 Rectifiers and Inverters 31
2.3.2 Choppers and Cycloconverters 33
New Words and Expressions 35
Notes 35
2.4 Further Reading 36
Reading Electronic Filters 36
Translation Methods and Skills of EST
(English of Science and Technology)——
科技英语翻译方法与技巧：长句的翻译 37
Exercises 39
Unit 3 Electrical Machines 41
3.1 Introduction 41
3.1.1 Elementary Concepts of Electrical
Machines 41
3.1.2 Classification of Electrical
Machines 41
3.1.3 Applications of Electrical Machines 42
New Words and Expressions 43
Notes 44
3.2 Induction Machines 44
3.2.1 Equivalent Circuit of a Polyphase
Induction Machine 45
3.2.2 Performance of a Polyphase
Induction Machine 46
3.2.3 Torque-Speed Characteristics of
3-Phase Induction Motors 47
3.2.4 Applications for Induction Motors 48
New Words and Expressions 48
Notes 49
3.3 Synchronous Machines 50
3.3.1 Equivalent Circuit of a Synchronous
Machine 50
3.3.2 Power Angle and Other Performance
Characteristics 51
3.3.3 Steady-State Stability 53
3.3.4 Applications for Synchronous
Motors 53
New Words and Expressions 53
Notes 54
3.4 DC Machines 55
3.4.1 Constructional Features of DC
Machines 55
3.4.2 Equivalent Circuit of a DC
Machine 57
3.4.3 DC Machines Characteristics 58
3.4.4 Applications for DC Machines 59
New Words and Expressions 61
Notes 61
3.5 Further Reading 62
Reading Monitoring Techniques for
Rotating 62
Electrical Machines 62
Translation Methods and Skills of EST
(English of Science and Technology) ——科
技英语翻译方法与技巧：词义的确定 64
Exercises 65
Unit 4 Electric Power Systems 67
4.1 Introduction 67
New Words and Expressions 68
Notes 69
4.2 Components of Electric Power
Systems 69
New Words and Expressions 71
Notes 71
4.3 Operation and Control of Power
Systems 72
New Words and Expressions 74
Notes 75
4.4 Power System Protections 76
4.4.1 Faults and Their Damages on Power
Systems 76
4.4.2 Circuit Breakers 78
4.4.3 Distance Protection 79
4.4.4 Lightning Arresters 80
New Words and Expressions 81
Notes 82
4.5 Power System Stability 83
New Words and Expressions 84
Notes 84
4.6 Further Reading 85
Reading Smart Grid 85
Translation Methods and Skills of EST
(English of Science and Technology) ——科
技英语翻译方法与技巧：被动语态 86
Exercises 89
Unit 5 Electric Power Generations 91
5.1 Coal-fired Power Generation 91
New Words and Expressions 92
Notes 93
5.2 Hydropower Generation 94
New Words and Expressions 96
Notes 96
5.3 Windpower Generation 97
New Words and Expressions 99
Notes 99
5.4 Solarpower Generation 100
New Words and Expressions 102
Notes 102
5.5 Further Reading 103
Reading Wind-Energy-Conversion
Systems 103
Translation Methods and Skills of EST
(English of Science and Technology) ——科
技英语翻译方法与技巧： 顺译与调整
语序 103
Exercises 104
Unit 6 Automatic Control 107
6.1 Introduction 107
6.1.1 Elementary Concept of Control
Systems 107
6.1.2 Classification and Applications of
Control Systems 108
New Words and Expressions 109
Notes 110
6.2 Feedback Control 112
6.2.1 Transfer Functions and Block
Diagrams 112
6.2.2 Dynamic Response of Control
Systems 114
6.2.3 Steady-state Error of Linear
Systems 115
6.2.4 Classification of Feedback Control
Systems 115
New Words and Expressions 116
Notes 117
6.3 Control Methods 119
6.3.1 PID Control 119
6.3.2 Fuzzy Control 122
New Words and Expressions 123
Notes 124
6.4 Control Technologies 125
6.4.1 Single-chip Microprocessor
Control 125
6.4.2 Programmable Logic Control 127
New Words and Expressions 128
Notes 129
6.5 Further Reading 129
Reading The Future of PID Control 129
Translation Methods and Skills of EST
(English of Science and Technology) ——科
技英语翻译方法与技巧：否定句的
翻译 130
Exercises 132
Unit 7 Sensoring Technology 134
7.1 Introduction 134
New Words and Expressions 136
Notes 137
7.2 Sensors 138
7.2.1 Resistive Temperature Detectors 138
New Words and Expressions 141
Notes 142
7.2.2 Strain Gauges 142
New Words and Expressions 144
Notes 145
7.2.3 Capacitive Pressure Sensors 146
New Words and Expressions 148
Notes 149
7.2.4 Inductive Displacement Sensor 149
New Words and Expressions 152
Notes 153
7.3 Further Reading 154
Reading Sensor Network 154
Translation Methods and Skills of EST
(English of Science and Technology)——科
技英语翻译方法与技巧：定语从句
的翻译 155
Exercises 158
Unit 8 Computer Network and Networked
Control 159
8.1 Introduction to Computer network 159
New Words and Expressions 161
Notes 161
8.2 Introduction to Networked Control
Systems 162
New Words and Expressions 165
Notes 166
8.3 Further Reading 166
Reading Application of NCSs to Power
System Control 166
Translation Methods and Skills of EST
(English of Science and Technology)
——科技英语翻译方法与技巧：科技
论文写作格式及规范 167
Unit 9 Signal Processing ＆
Telecommunication 169
9.1 Signals and Spectral Analysis 169
9.1.1 Periodic Signals and Fourier
Series 169
9.1.2 Spectral Analysis and Signal
Bandwidth 170
New Words and Expressions 171
Notes 172
Exercises 172
9.2 Modulation, Sampling, and
Multiplexing 173
9.2.1 Frequency Translation and Product
Modulation 173
9.2.2 Sampling and Pulse Modulation 173
9.2.3 Multiplexing Systems 174
New Words and Expressions 174
Notes 175
Exercises 175
9.3 Interference 176
9.3.1 Noise 176
9.3.2 Filtering, Distortion, and
Equalization 176
New Words and Expressions 177
Notes 178
Exercises 178
9.4 Analog Telecommunication
Systems 179
9.4.1 Amplitude Modulation 179
9.4.2 Message Demodulation 180
9.4.3 Frequency Modulation 180
9.4.4 Demodulators for FM 181
New Words and Expressions 182
Notes 182
Exercises 183
9.5 Digital Telecommunication
Systems 184
9.5.1 Sampling 184
9.5.2 Quantization and Quantization
Error 184
9.5.3 Companding 185
9.5.4 Source Encoding 185
New Words and Expressions 186
Notes 186
Exercises 187
9.6 Further Reading 187
Reading Anti-noise Systems—Noise
Cancellation 187
Translation Methods and Skills of EST
(English of Science and Technology)
——科技英语翻译方法与技巧：科技
论文英文摘要的写作 188
参考译文 193
Keys to Exercises 269
参考文献 279
前 言
现代电气工程及其自动化行业具有技术、资金、人才密集等特点，是电气信息领域的一门新兴交叉学科。随着当今高新技术的快速发展，电气工程及其自动化与人们的日常生活及工业生产紧密相关，这方面的人才市场需求也很旺盛。近年来，我国电气工程及其自动化行业迎来了新一轮的发展机遇，但也面临着国外电气工程及其自动化先进技术和高品质产品的严峻挑战。随着世界经济一体化，我国与国外同行之间的业务交往日益增多，大量的先进电气工程及其自动化技术设备的引进也随之增多，电气工程及其自动化专业英语的应用越来越广泛。对于电气工程及其自动化专业的大学生和从事相关领域的工程技术人员来讲，熟练掌握电气工程及其自动化专业英语基本技能是非常必要的。
电气工程及其自动化技术涉及电子电路、电力电子、电气工程、检测与自动化以及新能源等众多技术领域，其科技英语词汇和语句等虽常见于各专业文献中，但比较分散，给广大大学生和初学者的专业英语学习带来了诸多不便。为了满足电气工程及其自动化专业英语教与学的需求，我们编写了《电气工程及其自动化专业英语》一书。
电气工程及其自动化内涵丰富，涉及面广。在整个编写过程中，不仅注重与电气工程及其自动化工程实际紧密结合，而且所选教材内容紧扣专业基本知识点，体现基本内容、基本要求、基本能力，注意知识的衔接性、系统性和拓展性，其先修课要求完成电气工程及其自动化专业基础课程（电子技术、电机与拖动、微机原理与应用、自动控制原理、检测技术与自动化仪表、可编程控制器等）和电力电子技术、电力系统基础、电力系统控制技术等。同时，强调电气工程及其自动化专业知识的教学特点，有针对性地在教材内容深度和广度方面进行合理搭配，以实用和可运用性为目的，拥有广度，兼顾深度。课文图文并茂、简单易读，适合不同层次的读者阅读。
本书选材于国内外最新出版的教科书、专著、外文期刊等。尽管所选内容篇幅有限，但比较精练，基本涵盖了电气工程及其自动化学科领域的专业基础知识。全书共分9个单元，即电子电路基础、电力电子、电机、电力系统、电力生产、自动控制、传感技术、计算机网络与网络控制及信号处理与通信等。本书配套电子教案、授课建议和词汇总表，请登录华信教育资源网（http://www.hxedu.com.cn）注册下载。
本书第1、2、5章和部分习题及翻译技巧等由杨勇、宋海鹰、文珊和齐海英编写；第4、7、8章和部分习题由魏立明、朱鹰屏和魏大慧编写；第5、6、9章和部分习题由陈啸晴、邓秋玲和戚美月编写；第3章和部分习题由詹彤、高艳玲和牛晓燕编写；全书由杨勇统稿。在本书的编写过程中，电子工业出版社的王羽佳编辑为本书的出版做了大量工作，在此一并表示感谢！
本书的编写参考了大量近年来出版的相关技术资料，吸取了许多专家和同仁的宝贵经验，在此向他们深表谢意。
由于时间仓促、水平有限，错误之处在所难免，竭诚希望得到广大读者和同行的批评指正。
编 者
2013年12月
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