tài liệu cơ sở ngành văn cường ct

North Carolina State University researchers are using video game technology (Microsoft’s motion-sensing Kinect system) to remotely control cockroaches on autopilot, w[r]

Bài giảng: TRƯỜNG ĐIỆN TỪ (CT361)

(ELECTROMAGNETICS)

Chương mở đầu - Introduction

(Giới thiệu)

Giảng viên: GVC.TS Lương Vinh Quốc Danh

Bộ môn Điện tử Viễn thông, Khoa Công Nghệ

E-mail: lvqdanh@ctu.edu.vn

“Fundamentals of Applied

Electromagnetics”, by Fawwaz T Ulaby,

Prentice Hall Inc., 2001.

Optional References

1 “Trương Điện tư”, Ngô Nhât Anh, Trương Trong Tuân My, NXB Đại học Kỹ thuật Tp HCM năm 2000.

Edition, McGraw-Hill 2001

Textbook

Course homepage

DET’s website: http://cet.ctu.edu.vn/det/

 One mid-term (40%) and one final (60%)

 No textbooks, no notes

 A one-page crib sheet is allowed

Following actions are considered cheating:

- Sharing results or notes during exams.

- Using notes (hardcopy or electronic) during exams.

-Continuing work on your exam after we have called for papers.

You will receive ZERO for the exam and may receive F for the course if found cheating

 What does Electromagnetics study?

Electric charges

Electric field

Magnetic field

Current

Electromagnetic

wave

Radiation

… and many more

Can you give some examples

in which electromagnetics is

involved?

Electromagnetics in a Ink-jet Printer

Courtesy of EE311 (Purdue University) Prof Chappell

Electromagnetics in a Satellite

18.4 billion kilometers away from Earth and still communicating

(Nov 2012) A signal traveling at the speed of light towards

Voyager-1 , takes over 12.5 hours, to reach Voyager-1's receiver

(and vice versa) It is the farthest manmade object from Earth.

Voyager-1

More: http://en.wikipedia.org/wiki/Voyager_1

Voyage r Golden R ecord

Electromagnetics in Microwave Oven

http://www.todayifoundout.com/index.php/2010/08/why-you-generally-shouldnt-put-metals-in-the-microwave/

Rail Gun Basics

A rail gun is basically a large electric circuit, made up of three parts: a power source, a pair of parallel rails and a moving armature.

Electromagnetics in Weapons

Wireless energy transfer

A wireless charger for mobile phones

Source: http://exploit-tech.webs.com

Source: Application Note 138, Linear Technology,

Oct 2013.

Wireless battery chargers

Wireless control

North Carolina State University researchers are using video game technology (Microsoft’s motion-sensing Kinect system) to remotely control cockroaches on autopilot, with a computer steering the cockroach through

a controlled environment

The researchers are using the technology

to track how roaches respond to the remote control, with the goal of developing ways that roaches on autopilot can be used to map dynamic environments – such as collapsed buildings.

(Release date: 25/6/2013)

The University of Technology Sydney (UTS) today

announced that it has made significant progress on a

wheelchair that can be controlled using brain activity

scanners (Date: 21/8/2012)

Mind-Controlled Wheelchair

Source:

http://www.zdnet.com/uts-creates-mind-controlled-wheelchair-1339306390/

Source:

http://asiancorrespondent.com/92406/university-of-technology-sydney-faculty-of-science/

Maxwell’s Equation

Gauss’ law for electricity

Gauss’ law for magnetism

Faraday’s law of induction

Ampere’s law

Note:

1 The time dependence

2 Electric field and magnetic field are coupled

Course Outline

 In this course, we shall study 4 main topics:

Waves and transmission lines

Magnetostatics Electrostatics

Maxwell equations

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