Electrical Engineering
Content
Electrical Engineering
What do EEs do?
Research and development. Design. Manufacturing. Sales. Management.
M. Sami Fadali Professor of Electrical Engineering University of Nevada
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EE Disciplines: A Broad Field!
Analog and Digital Electronics Bioelectronic Engineering Computer Engineering Communications Engineering Control Systems Digital Signal Processing
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EE Disciplines (continued)
Electronic Circuit Design Engineering. Energy Conversion. Image Processing. Instrumentation Engineering. Information Processing Engineering. Microelectronic and VLSI Engineering. Microprocessor Systems Engineering.
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1
EE Disciplines (continued)
Microwave Engineering Photonic Engineering Power Electronics Power Systems Solid-state Engineering Telecommunications Engineering.
Electromagnetics
The study of electric and magnetic fields arising from charged particles in rest and in motion. – Theory based on physics and uses complex mathematics. – Explains how many electrical engineering systems work. – Used to design numerous things we use.
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6
Applications
Radio and TV. Cellular telephones. Computers. Electric Machinery. Superconductors.
Electric Power Engineering
Energy conversion to electrical form. Energy transmission over high voltage transmission line. Energy utilization.
•Large electric generators, •Nuclear power plants, •Transmission and distribution lines, •Insulator operation, economics, •Reliability, power electronics
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2
Solid State Electronics
Study of the behavior of semiconductor devices. Integrated circuits (ICs)
Electronic memory Digital electronic IC’s Transistor and linear electronics
Cars (Engines, Brakes), Radios, TVs, Microwaves, Semiconductor Lasers, Light Emitting Diodes, Photo Diodes for Fiber Optic Communication, Power Converters AC to DC
Solid State Electronics
•Electronic systems made using ICs and discrete components. •analog and digital circuits made up of semiconductor devices •ICs: Designed, fabricated, tested, marketed.
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10
Analog and Digital
Analog
– Amplitude in a continuous range. – Define over a continuous range of time or
Systems Engineering
Communications: Study of how human speech, music, text and image data can be encoded on electrical signals and transmitted . Controls: Study of making systems behave in a
prescribed manner.
space.
Digital
– Amplitude assumes one of a large number of
Signal Processing: The manipulation of digital
signals by computers to extract or encode useful information and to suppress noise and other distortion.
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discrete set of values. – Defined at discrete points in time or space.
3
Communications
Cellular Telephony Personal Communication Systems (PCS) Satellite telephone systems (Iridium) Global Positioning System (GPS)
More Communications
Computer Networking Internet Intranets Telephone system Cable TV Satellite data networks Military communications
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Signal Processing
High Definition Television (HDTV) Digital Radio Sound, Image, and Video compression Speech Recognition Image Recognition Noise Cancellation
More Signal Processing
Military Applications: Radar, Sonar Autonomous Vehicles Communication Systems Special Purpose Computer Architectures
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Control Applications
Acoustic - acoustic cancellation for a concert hall; intelligent hearing devices Aerospace - all-weather landing system; launch vehicles Automation and Manufacturing navigation for autonomous robot (e.g. pathfinder) Biological - cardiovascular control systems Defense - high performance fighters; tactical missiles; guidance and navigation; attack helicopters
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More Control Applications
Electrical - diffusion furnaces; semiconductor processes; read/write head control for optical storage Mechanical - active suspension for mobile laboratory Materials - control of smart composite materials Medicine - telemedical robotic systems for precision surgery Ocean - submarine Space Based Surveillance - weather, surveillance, monitoring system; satellites Structural - active earthquake control for skyscrapers
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Control Systems
P - Vehicle r - Reference (desired) speed y - Actual speed u - Fuel flow to engine K - Controller error
r e
References
Dr. Keith Holbert, The Electrical Engineering Program at ASU.
control
K
u
di
disturbances
P
Plant n
do y
desired output
Controller
actual output
sensor noise
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20
5
What do EEs do?
Research and development. Design. Manufacturing. Sales. Management.
M. Sami Fadali Professor of Electrical Engineering University of Nevada
1
2
EE Disciplines: A Broad Field!
Analog and Digital Electronics Bioelectronic Engineering Computer Engineering Communications Engineering Control Systems Digital Signal Processing
3
EE Disciplines (continued)
Electronic Circuit Design Engineering. Energy Conversion. Image Processing. Instrumentation Engineering. Information Processing Engineering. Microelectronic and VLSI Engineering. Microprocessor Systems Engineering.
4
1
EE Disciplines (continued)
Microwave Engineering Photonic Engineering Power Electronics Power Systems Solid-state Engineering Telecommunications Engineering.
Electromagnetics
The study of electric and magnetic fields arising from charged particles in rest and in motion. – Theory based on physics and uses complex mathematics. – Explains how many electrical engineering systems work. – Used to design numerous things we use.
5
6
Applications
Radio and TV. Cellular telephones. Computers. Electric Machinery. Superconductors.
Electric Power Engineering
Energy conversion to electrical form. Energy transmission over high voltage transmission line. Energy utilization.
•Large electric generators, •Nuclear power plants, •Transmission and distribution lines, •Insulator operation, economics, •Reliability, power electronics
7 8
2
Solid State Electronics
Study of the behavior of semiconductor devices. Integrated circuits (ICs)
Electronic memory Digital electronic IC’s Transistor and linear electronics
Cars (Engines, Brakes), Radios, TVs, Microwaves, Semiconductor Lasers, Light Emitting Diodes, Photo Diodes for Fiber Optic Communication, Power Converters AC to DC
Solid State Electronics
•Electronic systems made using ICs and discrete components. •analog and digital circuits made up of semiconductor devices •ICs: Designed, fabricated, tested, marketed.
9
10
Analog and Digital
Analog
– Amplitude in a continuous range. – Define over a continuous range of time or
Systems Engineering
Communications: Study of how human speech, music, text and image data can be encoded on electrical signals and transmitted . Controls: Study of making systems behave in a
prescribed manner.
space.
Digital
– Amplitude assumes one of a large number of
Signal Processing: The manipulation of digital
signals by computers to extract or encode useful information and to suppress noise and other distortion.
11 12
discrete set of values. – Defined at discrete points in time or space.
3
Communications
Cellular Telephony Personal Communication Systems (PCS) Satellite telephone systems (Iridium) Global Positioning System (GPS)
More Communications
Computer Networking Internet Intranets Telephone system Cable TV Satellite data networks Military communications
13 14
Signal Processing
High Definition Television (HDTV) Digital Radio Sound, Image, and Video compression Speech Recognition Image Recognition Noise Cancellation
More Signal Processing
Military Applications: Radar, Sonar Autonomous Vehicles Communication Systems Special Purpose Computer Architectures
15
16
4
Control Applications
Acoustic - acoustic cancellation for a concert hall; intelligent hearing devices Aerospace - all-weather landing system; launch vehicles Automation and Manufacturing navigation for autonomous robot (e.g. pathfinder) Biological - cardiovascular control systems Defense - high performance fighters; tactical missiles; guidance and navigation; attack helicopters
17
More Control Applications
Electrical - diffusion furnaces; semiconductor processes; read/write head control for optical storage Mechanical - active suspension for mobile laboratory Materials - control of smart composite materials Medicine - telemedical robotic systems for precision surgery Ocean - submarine Space Based Surveillance - weather, surveillance, monitoring system; satellites Structural - active earthquake control for skyscrapers
18
Control Systems
P - Vehicle r - Reference (desired) speed y - Actual speed u - Fuel flow to engine K - Controller error
r e
References
Dr. Keith Holbert, The Electrical Engineering Program at ASU.
control
K
u
di
disturbances
P
Plant n
do y
desired output
Controller
actual output
sensor noise
19
20
5
