4002test2(a)

# 4002test2(a) - r-~ EE 4002 04.04.2003 0 Name JA1E~ cfl;1 tJ...

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r .. -~.."., . . . tJ cfl; 0 JA»1E~ Yi?Y~".Q(f. / 1/ Name: ......... EE 4002 04.04.2003 MID SEMESTER TEST NO.2 Answer 3 questions and solve one out of two numerical problems Question 1 (2 pofuts): ('j) a) Draw the simplified control circuit diagr~th two blocks: controller - Ge(s), . andplant- Opes)andaunity feedback),andwritethe open-looptransferfunction GOL(S)and closed-loop transfer function GCL(S). b) Using Bode,plot derIDethe following terms: - crossover frequency, - phase margin, . -'bandwidth of closed loop c) Draw the block diagram of PI controller connected in the closed-loop control system and write the controller transfer function. (>\\1\1\-1 ('- 0-) c~".~ ller ~-1 ,..., \ XfJ.) M)..df'\._1 GcU) \ , 1 Gpu \ ~ JJ"~'"I_o,~ - ~ ~ J l. - 1 . ' , --'-- ,-- COL::, Cds) Cp(~) J C('-.::.~ lof Got J b) \C"lo~ J '- I +c.. -- lcc." I 0 , , -So D r .. \'r.ue M<.r:l . 1\ .f' - I()\) ~-- -IN I \ . J c)-;:\ . r; ~_'V'-c.l:""""- ~ r X(.\) ~--- 'l:- Vt", --I X67 ~J- r;u)~-"--'-'-'O'v~{~)1 Gp \"l--P . L ( --- --- ... ..,_., -,- -- '--- _.- v " - '3.!/t;. j &w , Vt(J) J(. ( -1-..2.- ~ fi\ c 5 I .t.hr./ vi

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-' . .. , Question 2 (2 points): - (0) - a) Drawthe blockdiagram of DC motor (with~loopnoaded bythe constant load and connected in the control system with current and speed controllers, PWM converter and uhity feedbacks. Which loop is faster?
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