Quick guide on stability of systems with Bode plots

http://www.engin.umich.edu/group/ctm/freq/freq.html

How to have windows 'always on top'

http://www.abstractpath.com/powermenu/

Guide on how to move my iTunes folder

http://www.ilounge.com/index.php/articles/comments/moving-your-itunes-library-to-a-new-hard-drive/

How to Select Any Edition or Version (SKU) of Windows 7 to Install From Single Edition DVD Disc Media or ISO

http://www.mydigitallife.info/2009/07/23/how-to-select-any-edition-or-version-sku-of-windows-7-to-install-from-single-edition-dvd-disc-media-or-iso/

ECE3031 Lab 2

Check gmail for
ECE3031 Lab 2

It has all the files and results for it

Order of an System , Time Constants & Response of Systems

http://en.wikibooks.org/wiki/Control_Systems/System_Metrics#System_Order

Didn't have the Art Of Control Engineering textbook today.

So here is from the web:

Time Constants
http://www.facstaff.bucknell.edu/mastascu/eLessonsHTML/SysDyn/SysDyn3TCBasic.htm

System Response Identification
http://www.facstaff.bucknell.edu/mastascu/econtrolhtml/SysIdent/Ident1.html

Inconsistency in lecture notes.

1. ECE3031, Lecture No 6
Page 12, Figure 3.2 , the backemf is vw(t).
Page 14 onwards, backemf is Ɛ(t).

2. ECE3031, Lecture No 7
Page 19, the Kp term is missing from the SSE eqs.

3. ECE3031, Lecture No 9
Page 9, Gk(s)? What is it? Closed loop transfer function?

4. ECE3031, Lecture No 14
Page 17, Mp is supposed to be 0.05
Page 20, Is that correct -1.5-2

5. ECE3031, Lecture No 15
Page 17,  Its not really clear. What if you have zeros in RHP? We'll get a encirclement right?

When capacitors are no longer capacitors.

Read the link given below
http://www.ecircuitcenter.com/Circuits/cmodel1/cmodel1.htm

And the post below.

You must know when it is no longer a capacitor.
Its determined by a) capacitance & self-resonant frequency which is always given by the caps datasheet.

In the previous attempts, my electrolytic was probably acting as an inductor. The WIMA was acting as a capacitor.

In my DC buck converter, I know why I have a voltage ripple. At f = 50 kHz, I get an impedance of 2.5 from my RC network. You can calculate the Z magnitude manually or through bode plots. So if I have a current ripple of A, my voltage ripple V = A * Z.

F1 Abu Dhabi

Ok,

Laplace of derivative is done 'by parts'
http://en.wikipedia.org/wiki/Laplace_transform#Example_.231:_Solving_a_differential_equation

First Order Differential circuit simulation using PSIM
In gmail attachment.

3. Need to read this
http://www.ecircuitcenter.com/Circuits/cmodel1/cmodel1.htm

EDIT--------------------------------------------------------------------
Tried it on circuit maker and PSIM, doesn't really explain it clearly.

So I decided to do V(s) = I(s)Z(s)

So V(s)/I(s) = Z(s)

Z(s) = (L*C*s^2 R*C*s 1)/( C*s )

Did a bode plot of this using MATLAB



---------- start of MATLAB code -----------
L = 25.3e-9
R = 0.03
C = 1e-6

num = [L*C R*C 1]
den = [C 0]

sys = tf(num,den)

bode(sys)
grid on

---------- end of MATLAB code ------------

See gmail for attachment - RLC capacitor

Post-PC installation steps

1. Windows 7
2. Activate Windows 7
3. Install drivers
4. 7-zip
5. Teracopy
   
6. PDFcreator
   
7. Firefox
8. Firefox - Adblock Plus
9. Firefox - Flash
10. Firefox - Download statusbar
    
11. Adobe Reader
12. vlc
    
13. Itunes
14. Casio fx-9860 scientific calculator
15. Windows Live Messenger
16. Microsoft Office
17. Microsoft Visio
18. Microsoft Project
19. MATLAB
20. PSIM
21. Skype
    

ESR

http://wiki.xtronics.com/index.php/Capacitors_and_ESR

http://www.ecircuitcenter.com/Circuits/cmodel1/cmodel1.htm

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