TNG HP CC CU HI N THI N TT NGHIP

O LNG CM BIN

1. Nguyn tc o cc i lng s dng thit b in t?

2. Cm bin l g?

3. Cm bin quang dng lm g? C my loi cm bin quang? Ng ra ca cm

bin quang thng l tn hiu nh th no?

4. Cm bin tim cn dng lm g? C my loi cm bin tim cn? Ng ra ca

cm bin tim cn thng l tn hiu nh th no?

5. C my loi cm bin nhit? Tn hiu ra ca tng loi cm bin nhit? Gii thch

k hiu Pt100?

6. o chiu cao ca bn nc, ta c th s dng nhng loi cm bin no? Tn

hiu ra ca cc cm bin l g?

7. Ti cc trm cn t, ngi ta s dng cm bin g? Ti thiu phi c my cm

bin? Tn hiu ra c x l nh th no?

8. Nu chc nng tng chn ca cm bin nh hnh di

9. V s cch ni dy cho cm bin loi PNP (24VDC) vo bng n 24VDC

10. V s ni dy cho cm bin loi NPN (24VDC) vo bng n 24VDC

11. V s ni dy cho cm bin loi PNP (24VDC) vo ng c 220VAC

12. V s ni dy cho cm bin loi NPN (24VDC) vo ng c 220VAC

13. V s cch mc cm bin PNP (24VDC) vi PLC

14. V s cch mc cm bin NPN vi PLC

15. Nu chc nng tng chn ca mt loadcell c k hiu nh hnh v sau

16. Trn nhn mt encoder c ghi cc thng s nh sau. Gii thch ngha ca tng

k hiu, thng s trn encoder

Resolution red black green white yellow

1000P/R 12 to

24VDC

0V Out A Out B Out Z

17. Mt cm bin khi lng xut ra tn hiu in p t -1mV n 10mV tng ng

khi lng t 0kg n 100kg (-10mV tng ng vi 0kg, 10mV tng ng 100kg).

tn hiu in p ra ca cm bin khi lng t 0V tng ng 0kg, 5V tng ng 100kg

ta phi dng mch g? H s khuych i bao nhiu?

18. Nu vi ng dng cm bin quang?

19. Nguyn l lm vic Encoder?

20. Phn loi Encoder?

21. Trnh by phng php o dng in v cch c gi tr bng Ampe kp?

L THUYT IU KHIN T NG

1. Th no l iu khin v cho v d?

2. C bao nhiu cch m t ton hc cho mt h thng iu khin?

3. Trnh by cc bc tm hm truyn ca mt h thng?

4. Cho mt h thng c s khi, tm hm truyn kn ca h thng trn, ta c nhng cch no?

5. Nguyn l ca phng php m t ton hc ca mt h thng bng phng trnh trng thi l g?

6. Cho mt h thng di dng hm truyn. Ta c th thnh lp phng trnh trng thi ca h thng khng? Gii thch?

7. Tnh n nh ca h thng ph thuc vo g? 8. Cho trc mt h thng c cc cc. iu kin h thng n nh, bin gii n

nh v khng n nh l g?

9. Cho h thng c hm truyn nh sau:

( )( 1)( 2)

sG s

s s s

Hi: h thng trn c n nh khng? V sao?

10. xt tnh n nh ca mt h thng, ta c nhng phng php no?

11. nh gi cht lng ca mt h thng, ta c th da vo nhng yu t no?

12. ci thin p ng qu nh vt l, thi gian ln v thi gian xung cho mt h thng, ta c th dng khu hiu chnh no?

13. gim sai s xc lp cho mt h thng, ta c th dng khu hiu chnh no?

14. Cho bit hm truyn sau y l ca khu hiu chnh no?

( ) IC P D

KG s K K s

s

15. K tn cc phng php thit k h thng (hiu chnh h thng) lin tc hc? 16. Trong thit k b iu khin PID, ta c nhng phng php no?

17. C bao nhiu phng php m t ton hc mt h thng iu khin lin tc ? l cc phng php no ?

18. Nhng tiu chun no c dng kho st n nh ca h thng iu khin lin

tc ?

a ra kt lun v tnh n nh ca nhng h thng c p ng i vi hm nc nh sau:

19. nh gi cht lng h thng iu khin lin tc, ta da vo nhng tiu chun

no?

20. Khi thit k h thng iu khin lin tc, nhng khu hiu chnh no c s

dng ci thin p ng qu v sai s xc lp?

21. thit k h thng iu khin lin tc, ta c th s dng cc phng php no?

22. Hm truyn h thng G(s) l g?

23. Xy dng hm truyn h thng lm g?

24. Qu o nghim s ca h thng l g?

25. Biu Bode cho bit g?

26. Th no l h thng n nh v khng n nh?

27. kho st tnh n nh ca h thng ta c th da vo u?

28. B PID l g?

29. B PID bao gm nhng khu g?

30. Sai s xc lp ca h thng l g?

31. vt l ca h thng l g?

32. Ti sao phi gii hn vt l ca h thng?

K

t

c(t)

o

t

c(t)

o

K K

t

c(t)

o

I II III

VI X L

1. giao tip gia VK PIC16F877A vi cc thit b ngoi vi ta c th thc hin

theo nhng cch giao tip no? Nu cc chun giao tip trong mi cch.

2. C bao nhiu loi ngn ng lp trnh cho VK? l nhng loi no?

3. VK PIC 16F877A c bao nhiu timer? Nu chc nng v gi tr m ca mi

timer?

4. Khi chc nng no ca VK PIC16F877A c s dng gii quyt cc bi

ton sau: 1. c kt qu t cm bin nhit 2. iu khin tc ng c

SERVO 3. Truyn d liu t PIC16F877A ln my tnh

5. lp trnh delay (lp trnh khong thi gian) bng ngn ng hp ng ASM, ta

c th lp trnh bng cc phng php no?

6. Pic 16f877a c bao nhiu Port ? k tn

7. Tc x l ca Vi iu khin Pic 16f877a ph thuc vo g ? khi no c tc

ln nht.

8. Trnh by chc nng chnh ca khi chc nng Timer trong Vi iu khin Pic

16f877a

9. Vi iu khin pic 16f877a s dng ngun c gi tr bao nhiu v c bao nhiu

chn cp ngun ?

10. Vi iu khin Pic 16f877a c bao nhiu knh ADC? Chc nng ca khi ADC

11. Trnh by chc nng ca khi PMW trong Vi iu khin Pic 16f877a?

12. Vi iu khin Pic 16f877a c bao nhiu ngun ngt? a ch Vector ngt = ?

13. Vi iu khin Pic 16f877a c th giao tip theo cc chun giao tip ni tip no?

14. Kt qu chuyn i ADC ca Vi iu khin Pic 16f877a gm bao nhiu bit?

15. Vi iu khin Pic 16f877a v LCD 16x2 thng giao tip vi nhau theo my ch

?

IN T C BN

1. V mch phn cc diode?

2. V mch chnh lu ton k? Trnh by ngn gn chc nng ca mch

3. Xc nh cng thc tnh in tr hn dng R1 trong mch sau:

4. Hy v mch cu phn p t in tr v xc nh in p ti ng ra ca mch?

5. Transistor lng cc (BJT) theo cu to gm my loi. V k hiu trong mch

in t ca tng loi?

6. Trnh by cc vng hot ng ca Transistor BJT?

7. Trnh by cch phn cc transistor BJT hot ng cc vng: Tc ng, bo

ha v ngng dn?

8. Hy v dng ca in p ng ra Vc ca mch sau

9. Hy trnh by cc mch ng dng thng dng ca b khuch i thut ton

OpAmp

10. Hy xc nh in p ng ra OUT 6 theo in p ng vo IN6

MNG CNG NGHIP

1. Mng truyn thng c vai tr g trong cc h thng cng nghip?

2. K tn 4 cp trong m hnh phn tng ca h thng mng cng nghip?

3. hn ch dy dn kt ni t b iu khin PLC n cc thit b trng nh cm

bin/c cu chp hnh, ngi ta ghp ni chng nh th no?

4. Hiu th no l ghp ni phn tn?

5. K tn cc loi phng tin truyn dn trong truyn thng? Cc loi phng tin

truyn dn dng trong mng cng nghip?

6. thc hin vic truyn thng gia 2 PLC vi nhau, m 2 PLC ny khng c tch

hp sn giao din mng th ta phi lm g?

7. Mt PLC c th va tham gia truyn thng vo mng Profibus v va tham gia

truyn thng vo cc mng khc nh Profinet, AS-i, khng?

8. K tn cc thit b lin kt mng?

9. K tn mt s h thng bus tiu biu m em bit?

10. Cho mt bi ton nh sau:

Cn gim st nhit ti mt ni kh xa so vi ni t b iu khin PLC. V khong cc

xa nn gy kh khn cho vic lin lc trc tip gia b cm bin th b iu khin PLC.

Em hy thit k gii php kinh t c th thc hin cng vic ny.

11. Hin nay, hng Siemens i u trong vic m rng truyn thng xung cc thit b

cp trng, iu c ngha g?

12. Mt h thng mng cng nghip ca mt hng sn xut A c th kt ni c vi

h thng mng cng nghip ca hng sn xut B khng?

13. K tn mng Simatic net ca hng Siemens?

PLC

1. Hy k tn v k hiu ca 4 loi vng nh trong PLC S7-1200 m Anh/Ch bit?

2. Hy nu cng dng ca Tmer v Counter trong PLC S7-1200?

3. Nu tn cc loi Timer trong PLC S7-1200?

4. Nu tn cc loi Counter trong PLC S7-1200?

5. PLC S7-1200 c th m rng c thm bao nhiu module tn hiu v module

truyn thng?

6. PWM trong PLC S7-1200 l g?

7. HSC trong PLC S7-1200 l g?

8. C cc loi ng ra no trong Module tn hiu ca PLC S7-1200?

9. Ng ra Relay trong module tn hiu ca PLC S7-1200 dng c cho loi ngun

ngoi no?

10. Bit First Scan hot ng nh th no?

11. CPU 224XP v CPU 1212C thuc dng sn phm no ca Siemens. Gii thch

ngha ca cc tn sn phm: CPU 1214C DC/DC/DC, CPU 1214C DC/DC/relay,

CPU 1214C AC/DC/relay

12. CPU 1214C DC/DC/DC c bao nhiu DI, DO, AI, AO? Nu mt h thng yu

cu 20 ng vo, 35 ng ra, 6 knh AI th ta s dng bao nhu PLC 1214C? Gii thch.

13. Phn loi ng vo PLC theo in p ng vo. S kt ni thit b gm nt

nhn, cm bin PNP, cm bin NPN vi ng vo CPU 1214C DC/DC/DC?

14. Phn loi ng ra PLC? S kt ni thit b gm n AC 220V, ng c AC

220V, ng c 3 pha, van in t 24VDC vi ng ra CPU 1214C DC/DC/DC?

15. V cu trc ca chng trnh lp trnh trn TIA PORTAL? Gii thch cc khi

OB, FB, FC, DB?

16. PLC S7 1200 c bao nhiu loi Timer? Chc nng ca tng loi?

17. PLC S7 1200 c bao nhiu loi Counter? Chc nng ca tng loi?

18. PLC S7 1200 c th ghp ti a bao nhiu module m rng?

19. CPU 1214C DC/DC/DC c bao nhiu ng vo AI? Chc nng ca n? Mi knh

c chuyn thnh bao nhiu bit v lm th no bit a ch lu gi tr cho mi knh?

20. Chc nng ca knh ng ra AO? Lm th no bit c a ch cha gi tr

quy inh cho knh ny?

21. Phn loi b pht xung trn PLC S7 1200? Chc nng ca tng loi?

22. PLC c s dng lm g?

23. Mt s u im ca PLC so vi h thng relay?

24. Thng s PLC S7-1200 DC/DC/DC c ngha nh th no?

25. V s u ni ng vo ra cho PLC S7-1200 DC/DC/DC vi cc thit b sau: 1

nt nhn, 1 cm bin loi NPN, bng n 220V, bng n 24V.

26. Nguyn tc hot ng ca PLC?

27. So snh lnh Set v lnh Out?

28. So snh Timer TON v TOF?

29. So snh CTU v CTD?

30. Th no gi l ng vo ra s?

31. Th no gi l ng vo ra Analog?

32. Module Analog dng lm g?

33. Module IN/OUT dng lm g?

34. Module RTD dng lm g?

35. Truy cp bit, byte, word nh th no?

IN T CNG SUT

1. in t cng sut l b mn hc v cc thit b in t c cng sut ln hay nh

2. Mch chnh lu dng lm g ?

3. Mch nghch lu dng lm g ?

4. V mch chnh lu cu 1 pha dng diode ?

5. V dng sng in p ng ra ca mch chnh lu cu 1 pha ?

6. Transistor c my lp bn dn ?

7. V k hiu 2 loi transistor c bn l NPN v PNP, v xcnh tn cc chn ?

8. Cc chn ca mosfet c tn l g ?

9. Transistor dng khuch i dng hay p ?

10. a Thyristor SCR v trng thi ngt c nhng cch no ?

11. Triac l linh kin dn dngin theo my chiu ?

12. Mch chnh lu cu 1 pha l loi mch chnh lu c iu khin hay khng iu

khin ?

13. Mch chnh lu tia 1 pha, s dng bao nhiu diode chnh lu ?

14. Mch chnh lu tia 2 pha, s dng bao nhiu diode chnh lu ?

15. Vi cng iu kin ng vo l in p c dng sng Sin chun, dng sng in p

ng ra ca mch chnh lu tia 2 pha v chnh lu cu 1 pha ging hay khc nhau ?

16. Dng sng in p ng ra ca mch chnh lu cu 1 pha c ph thuc vo ti hay

khng ?

17. B bin i in p mt chiu DC-DC c ng vo hay ng ra bin i c ?

18. B bin i in p xoay chiu AC-AC c ng vo hay ng ra bin i c ?

19. Bin i in p xoay chiu AC l bin i v cc i lng no ?

20. Bin tn hot ng da trn nguyn l thay i i lng no ca tn hiu in p

xoay chiu ng ra ?

21. T c gi tr ln (t phn cc) dng lc tn s thp hay tn s cao ?

22. T c gi tr nh (t khng phn cc) dng lc tn s thp hay cao ?

23. Nu mt vi im khc nhau gia linh kin thng v linh kin cng sut ?

24. V sao phi thc hin cch ly cng sut ?

THIT B H THNG T NG

1. Cu to ng c bc?

2. Cc loi ng c bc?

3. Th no l ng c bc n cc v lng cc?

4. Cc ch kch ng c bc quay?

5. Cu to AC servo?

6. AC servo khc ng c bc nh th no?

7. Ac servo c Encoder 1024 xung/vng. Nu mun ng c quay 1 gc 300 th cn

bao nhiu xung?

8. ng c bc c s liu: 1,80 /step. Vy mun ng c quay 1 gc 450 th cn bao

nhiu xung?

9. Ac servo c Encoder 1024 xung/vng gn vo trc vt me c bc rng 6mm, by

gi mun cho vt me di chuyn 100mm th cn bao nhiu xung cho driver?

10. Ac servo quay c nh tn hiu u vo ca Driver l?

11. in p u ra ti a ca bin tn?

12. Bin tn c iu khin tc Ac ng c 1 pha?

13. in p u vo bin tn l in p my pha?

MY IN KH C IN

1. Trnh by nguyn l lm vic ca my bin p cch ly n gin.

2. Ti sao cng mt cng sut truyn ti my bin p t ngu c kch thc nh hn

my bin p cch ly?

3. Ti sao khng c h mch th cp my bin dng?

4. Trng thi lm vic ca my bin in p?

5. V sao tc ng c in khng ng b nh hn tc t trng quay?

6. ng c in khng ng b quay c th t trng trong ng c l t

trng g? C bao nhiu cch to ra n?

7. Cch o chiu quay ng c KB 1 pha, 3 pha.

8. Ti sao khi m my ng c ngi ta thng h in p t vo C? C bao

nhiu phng php h in p t vo ng c?

9. Phng php o chiu quay ng c in 1 chiu nam chm vnh cu, kch t

c lp ( cun dy kch t), kch t song song?

10. Phng php iu chnh tc ng c in 1 chiu nam chm vnh cu, kch t

c lp ( cun dy kch t), kch t song song?

11. Ti sao ng c in mt chiu khi ang hot ng khng c php mt kch t?

12. Cch tnh ton la chn cu ch?

13. Cch tnh ton la chn CB?

14. Cch tnh ton la chn Contactor?

TRANG B IN

1. Trong cc mch iu khin C R-le nhit c vai tr g?

2. Trong mch i ni sao tam gic ch cn dng 2 Contactor i cch u dy sao

hoc tam gic l mch chy ng k thut (cp ngun trc tip). Nhng thc t ngi

ta dng 3 contactor ( thm 1 contactor cp ngun) v sao?

3. m my trc tip ng c KB 3pha ta ch cn mt CB 3 pha l . Nhng ti

sao ngi ta s dng mch m my trc tip C?

4. Trnh by cc bc khi lp rp mch iu khin C.

O LNG IU KHIN MY TNH

1. Giao tip cng USB l giao tip ni tip hay song song?

2. Hin nay c bao nhiu chun giao tip USB? K tn

3. Chun giao tip RS 232 l chun giao tip ni tip hay song song?

4. Vi x l v my tnh thng giao tip vi nhau theo chun giao tip no?

5. Ti sao giao tip gia vi x l v my tnh cn phi c mch m cha IC Max

232?

6. Trnh by cc tc truyn d liu thng dng bng cng giao tip ni tip?

7. Trnh by i tng dng khai bo giao tip ni tip trong VB 6.0

8. Ngn ng lp trnh trong Labview l ngn ng g?

9. Giao tip theo chun ni tip v giao tip theo chun song song, giao tip no c

tc truyn nhn d liu cao hn?

10. Trong hai chun giao tip ni tip v giao tip song song, giao tip no s dng

nhiu t dy dn hn

HT