(Pages: 2)
6425
B.TECH.DEGnEEEXAMINATTON',NO\IEMBER2013
T'ifth Semester Branch:MechanicalEngineering/AutomobileEngineering SYSTEMS (MU) MECH.A\:IRONICS AI'ID CONTROL (Old Scheme-supplementary/I\[ercy Chance)
tis
Maximum : 1oo
me : Three Hours
Part A Answer all questions' Each question carries 4 marks' saurpled signal How does it affect the quality of 1. What is sampling frequency ? and thermopiles' 2. Differentiate between thermocouples
?
What is Program counter register ? layer in computer networks' 4. Explain the significance of physical mouse' 5. Explain the working of an optical
3.
6. l.
8.
L 10.
Expiain adaPtive control sYstem' uses What are stepper motors ? What are their
?
Define a second order system with examples' scans' Differentiate between MRI and Nuclear
Explain the term damPing ratio'
(10x4=40marks) Part B An'swer
all questinns'
h questi'on
corries L2 marks'
of the opamp and state its uses' 11. (a) Explain the comparator configuration
(b)Explaintheworkingofanyonetypeofdigitaltoanalogconverter. Or optical encoder' L2. (a) Explain the working of an absolute (b) Explain the working of laser printers' 13. (a) Explain address' data and controlbuses' memory cards' (b) Discuss the data storage techniques used in flash Or
14.ExplainwithablockdiagramtheinternalcircuitryofaPLCunit.
(8 marks) (4 marks) (6 marks) (6 marks:
15'
2
Explain the various modes of closed loop contror using simple opamp equivalent circuits. Or
16. Find the transfer
17
'
JC
F
for the following mechanical lever systern.
compute the steady stage step error of a contror system with the fouowing parameters.
G(s)=* 18'
peaza
*, H(s)=##
Or Find the steady state step and ramp errors for the unity feedback crosed roop system whose open loop transfer function is G(s) *4 = s(si + E).. .
1'9' Determine whether G(s) - io/ =
1
the open loop control system where the transfer function
GlrG:Il,n4
is stabre.
also
6. /Wba
Or
m-
1. Dr: 2. Wt 3. Wh ah 4. Wh 5. Dra
A unitv feedback svstero has an open loop transfer tunction G(s) = Draw the root loms diagram for this system and find the range of varues for K over which m matue_ the crosed roop system
#ffi#i.
7. Enra 8. EryI 9. Defir
10. Drar
(5 x L2 60 marks) =
11. (a)
E
(b) s
tu
fo
3136
(Pages:3)
Reg. No... Name........
B.TECH. DEGREE EXAMTNATTON, DtrCEI\{BER 2012
Fifth Semester Branch : Mechanical Engineering/Automobiie Engineering MECI{ATRON]CS AND CONTROL SYSTEI\{S (MU) (ImprovementlSupplernentary/1\derey
Chance)
me : Three E{surs
Maximurn: 100 Marks
Part A Answer a,ll questions. Each questian canies 4 marks"
1.
Discuss the advantages of rnechanic systerns machine tools.
in maehine tools cornpared to conventional
2. Distinguish between ae:tive and passive transducers. 3. Wtrat is a'token ring'in cornputer networks ? 4. Explain the wrrking of a differential amplifier. , 5. Explain a sample and hold circuit. 6. Explain time constant of a sensor. 7. What is a PIR sensor ? Where is it used ? 8"
Expiain response tirne.
9.
Explain a senromotor.
10.
Define transfer function and. state its use.
(10x4=40marks)
Fart B Answer all questions. Each question camies lZ marhs.
11. (a) Explain any two types angular position
(b)
sensors and their uses,
(5 marks)
Explain with a circuit diagram the working of an instrumentation amplifier.
(7 marks)
Or
12. (a) Explainthe construction and signal conditioning circuitry of a strain
(b)
gauge load cell.
(8 marks) Explain how an op-amp can be used for correcting nonlinearity of signals in a logariihmic amplifier. (4 marks)
Turr over
13. (a)
2
Differentia
(b)wha'f";#:ril,""T;:},r*:xJj:H;::.:,:::ffi
'lilr';re,hey**,,:,r::; (6 marks)
14. (a) What is latclinS
of a coit in pLC
construct;#,*0". oll*r"., ladd"r'a*., to autom-ate a dr,lingmachine (ii) drill motor on (iii) drilt (iv) dwell for B seconds (v) retract drill bit
(b)
(vii)
15. (a) Distinguish between
'
(b)
and
(vi)
declamp work.
a"ii""it..
(2 marks)
in the following sequence
motorstop
open-loor " -- '--p and closed-roop contror systems and
their
*rrrlll
ffil:
Explain wit
"r;,",i",,1,H:ffffillfiliT;ll:,H*:fl,"l:prDcontrorrerrorcontror,,*,rlno]?l? (8 marks)
Or 16.
rrnd the transfer function Z for the following mechanical F system.
lx l-b
onG(s)=ffi' '
Find the steady state step response and evaruate the steady state error arr",,--_
* fl:.,
::T:Tt-
,1S.
and ramp enors ,?"
*" unity reedback system wirh
s,
-,
epen
*25
r; ,:: (12 marks)
.
:
x"r'
7&.
B,eg. No............:.....:....t-.......
@ages: 8)
Ns"ne....... Box.
B.TECH. DEGRmE E)(AMTNATTON, APRrL zOLl
Ets)
Fifth
Semester
tsranch-Mechanical Engineering/Automobile Engineering MECHATROMCS AND COI.IITROL SYSTEMS
N, (Supplementary) /
EE-
'
i
*s)
Maximum : 100 Marts
.'hree.Eours
Answer all questions'
Part A Each question carries 4 marks' P*"1
,ui*
four applications of Mechatronics' Distinguish between active and passive transducers'
L Mention
1
arty
8. Explain the importance of PLC systems'
L,i"" I
t*) I
btsl
{ a
Explain the principle of computerised tornogiraphic scan' Distinguish between an open loop and closed loop system'
G.
Explain the qignificance of a transfer funitions'
T.
Explain the concept of system stability'
T.
Define the characteristic equation of a closed' system' Explain how stability of the sYstem. State and explain Nyquist stability
criterion'
it may be used to cheek the
1
What information can you obtain from the'root locus
?
(10x4=40marks)
Part B -
Eanh qucstion carries t2 marks'
(a) Comrnent on the scope of Mechatronics' (b) Explain the various [ypes of sensors
"::t
(6 marks) (6 marks)
ditrerent systems'
(a) With neat sketch e:cplain how the disPlacement is measured (using transducers)"
'
(b)
with
a neat sketch e:cplain the 4/3 directional control valves
in
a
(6 marks)
hydraulic circuit system' (6 marks)
furu
over
2 13.
G7146
Comment on the various types of Input and output (VO) systems. Briefly explain these functions.
l?
(12 marks)
Or' L4. Construct a ladder diagram to the operation of pressure a regulating solve. ft must open when the pressure is below the standard pressure and close when ttre pressure ex@ a standard value.
15. (a) Find the transfer function
1&
(12 marks) of the given electrical netwogk.
19_.
Fig.1.
(Z marks)
G) Explain the procedure to determine the transfer function
of a control
system.
(S marks)
2A-
Or
16'
Draw the electric analog, by f.v. and f-i analory of the mechanical system given below. Write the equilibrium equation of the mechanical system :
D1
k, M1 I
u,l
h
C
h
I
M2
-uz
-r US
Fig.2.
h Ms
(12 marlcs)
1
il
G7145
D
equation for a first order system with step input. What are the salient features of the
?
(12 marks)
Or
irc the range
n
of K for a stable system when equatioirs are
:
2t'+6s2+6s+(1+K)=9. (2 x 6 = 12 marks) loop systems for which open loop T.F. is
G(r)E(s) =
:
(s+3)(s+5)(s2+2s+Z)'
&e Boot loci of the system of 0 < K
<
oo. Also deter:niue
the gain margin if K = 18. . (L2 marks)
Or loop transfer function is given on G(s)H(s) =
8+2 (s+1Xs-1) Determine the stability of
loop system by Nyquist criterion. (12 marks) L5
x L2 = 60 marksl
9224
(Pages:2)
Reg. No... Name.
B.TECH. DEGREE EXAMINATION, NOVEMBER
Fifth Branch
: Mechanical
2OL7
Semester
Engineering/Automobile Engineering
MECHATRONICS AND CONTROL SYSTEMS (MU) (Re gular/Improve ment/S upple mentary) Maximum : 100 Marks
Answer all questions.
Part A Each question carries 4 marhs. What is an anti-aliasing filter ? 2. Differentiate between Null and Deflection sensors. 3. What is a flag register ? 1.
4.
Discuss the
ISo-osI
model for data transfer in computer networks.
Explain any one type of computer printer. 6. Explain on-off type close loop control system. 5.
Explain the construction of a vane type hydraulic motor. 8. Defrne a first order system with examples. 9. Differentiate between transient and steady state responses of a system. 10. Explain compensators in system. models. 7.
(10x4=40marks) Part B Each question caruies !2 marhs.
(a) Explain the buffer amplifrer configuration of the OP-Amp and state (b) Explain the construction and working of a thermopile.
its uses.
(6 marks) (6 marks)
Or
(a) Explain the working of an incremental optical enioder. (b) Explain tire working of LCDs. (a) Compare serial and parallel ports for datq fransfer. (b) Discuss the data storage techniques used in cDs and DVDs.
(8 rnarks)
(4.marks) . (6
marks)
(6 marks)
Or
Turn over
14.
(a) Explain the various (b) Explain CSMA/CD.
2
F 9224
parts of a dialysis.machine.
(7 marks) (5 marks)
15.
Construct the bilock diagram fi1 JCq jCo model and find the transfer functions, a _-_=_ -__! for the following F'F'q mechanical system.
(12 marks)
16'
Explain with a neat sketch' the construction and working of a rinear hydrauric servo actuator. (12 marks)
17
'
Compute the steady-state ramp error for a4 basic u.oru rcetrDa( feedback system
with G(s) .=
I
;G15.
and H(s)
;
1.
(12 marks)
18' "1TlT:
le'
the effect of pole ]ocation on the ,"urr3rl.r, response of a system with suitabre time response
8.
rY;',l?"',nil[Ti:?:#ti,f1"d G(s)
20.
7
out the ranse orpararneter K ror the system *nn
=(s +(s+2) 3)(s *
K)
u'd II(s;
=
1'
Or Find the K range for stability for the following control systern
r""!ti#l?
''
:
(12 mar
lbx 12=60m
9. 10-
F 3548
(Pages:3)
Reg. No...
B.TECII. DEGREE EXAMINATION, NO\ZEMBER Fifth Semester
2O1O
Branch-Mechanical Engineering/Automobile Engineering MECHATRONICS AND COI{ITROL SYSTEMS (MU) (Regul arllmprovemenUS uppl6mentary)
Time : Three Hours
Maximum : 100 Marks
Part A Answer all questions. Each question eamies 4 marks.
1. Explain the features of a practical op-amp. 2. What is meant by sampling frequency ? 3. Explain a simple sample and hold circuit. 4. \['hat is a PID controller ? 5. What do you mean by a servo motor ?
6. Define a seeond order system. 7. What are the various buses in a micro processor
system
?
8- Explain a DACA system. 9- What is a program counter register ?
l0-
Explain the working of an Optical Character Reader (OCR).
(10x4=40marks.)
Part B Answer all questions.
[L (a) Explain the construction and principle of a thermopile. ft) Explain how strain gauges are used in a load cells to measure force dnd torque.
(6 marks) (6 marks)
Or
!L ta) Explain an instrumentation amplifier with a neat circuit diagram. m) Explain the working of an optical proximity serrsor.
(8 marks) (4 marks)
TurEoutr
2
13.
F 3548
(a) Explain the PLC bringing out the difference of
it with other microprocessor
systems. (10 marks)
(b) Explain the 7 layer OSI model for protocols.
(2 marks)
Or L4. (a) Explain the tracking system in a CD player. (b) Explain ECG. 15.
(10 marks) (2 marks)
(a) Discuss the transfer function of the following circuit
:
Fig.l.
(b)
(8 marks)
What do you mean by step response of a system
?
(4 marks)
Or
16'
obtain the governing equations of the following mechanical system used in vehicle suspension.
jr cl
Fig.2.
(12 marks)
3 17
'
Discuss the stability of a system reiresented by the transfer function 'I
F 8548 :
G(s)= - t s'+8s+16 12 marks)
Or 18.
19.
Explain the step response ofa second order system and explain peak response and overshoot. (12 marks) construct the Bode plotfor the system,with transfer fonction : 10
G(s) - \v/=s(15 -'
9' (12 marks)
Disc"ss.!t-r-9,,,..T;$99.:lanalyllrrq
tre+s19.11,rys!9, gse of a eontrol sSrstem using root loeus prots.
(12 marks)
[5 x 12 = 60 marks]
\.
\\ -,\._
(Pages:3)
APRrL B.TEcrr. DEGnEE DGIVIIT{ATroN', Fifth Semester
2010
Engineering Branbh-Mecharrical EngineerinlAutomobile SYSTEMS (M) MECHATRONICS AI,ID CONTROL
(Supplementary-Prior to 200?
Admissions)
Ma:rimum : 100 Marks
hree Hours Answer all questions'
Part A Each question carries 4 marhs' and transducers' Distingursh between sensors of proximity pickups' Explain the working principle
digital communication systems What are the advantages of systems' Explain the importance of PLC
obtainthetransferfunctionofasimpleclosedloopsystemwithafeedback. examples' loop system by giving suitable Ilefine open loop and closed of a system' Exptain the concept of stability stability criterion' State and explain the Routh-Hurwitz's suitable examples' Shat is rool locus ? Explain with
Sate the advantages of Bode Plots'
(10x4=40marks) Part B
Each question carries
rftrl
12 marks'
(u) Analogue and (i) Active and passing transducers ; Distinguish between :
i*l
nt
-"rI
and secondary
digtal transducers
transducers'
in the present stage ? Mention mechatronics of scope the what are
mechatronics.
;
(? marks)
the application of (5 marks)
Or
Turn over
2
12. with neat sketches e4plain the various kt"d, of hydraulic actuators. 13. Exptain some of the medicar devices which or-""i*l;;;;:;nic ..____-s vr rI
"""
14. 15.
02 systems.
or
a2
tunction and working of the VO systems in mechatronics. tunction of tle si,r"r,
:::r:r"."e obtain the transfer
"r.""a*;;;;;;u.v'v*ruD'
Rt
R2
et ,)
=q)
eo Fig. r.
16'
ffirffi';T::,H*i::1ffi;:tr;::'.sxstem
t7'
,i:l-,iff il1:flilffif:T,Tffity,,"u G(s) H(s) =
given berow
bvf,u
and f,i. a^alosy. write
pM and nnd the stab,ity orcrosed-ro"o
10(s+B)
s(s+2)(rr+"{' Or
*.lll
.3 18.
Appty Boute criterion to check the
G 2160
stability of the given characteristic equation :
(a)
ba +sa +L?.sz +8s + Z=0.
ft)
s3 +.10s2 +2/Ls
+B = 0.
(2x6=12marks) 19.
A second order system a step
a natural frequency of 10 rad/s. and a damping ratio of 0.8. It is given las input of magnitude equation to 1.0. Detemine
(a) The response equation ; (b) Time for complete response ; (c) Response when time elapsed is equal to 0.5s. (d) Time for 607o response. (4xZ=l2marks) Or
20. Explain how the stability of the given system is obtained by Routh-Hunnitz criterion
whose
eharacteristic equation is given. (12 marks) 15
x t2
= 60 marksl
(Pages:3)
Beg. No..
1. ::.
elEeH. rlEGTryT
.
Namg.
@
Fifth
APRTL zme
Semester
MECII{IBONICS AND COTiNSOL SYSIEMS (}IT.D (InprovemdntlsupplCmentar.yJ Maximum:
LOO
Marks
PartA ,, Answer all qaestions Eath question earrics 4 rnorks.
t t
hlain
the princrple of working of a plezo-etecfric transdui:er.
WLat is an operational amplifier
mat
?
What are its characteristies
?
is meant my filtering ?E5plain.
l- Wtite notes on actuators f. lbat is rneant by serial interfaciry ? Explaiil. lt.
What are the merits and demerits of open-loop and closed-loop control systerns.
I.
Ilefirc transfer function. Obtain the transfer ftmctionsof the R-LC network
F.is.
shown in Figune-l.
I
.l. Ihrr tbe blmk diagran of the e&ical networt showa nil fisur l above. I
tf
Omeare the traaslafi,onal and rotai;ioaal
Manieal
systems.
I. fhat are gain and phase margins ? How do they enable to aaalpe the stability of a control srdem?
I '''
(10x4=4Omarks)
Ttrm over
'_+'
,2 G
Part B Ansuer
11. (a)
Iryrite a no&e on LVDT.
a\ qw$irrns-
Euh aucstian
';G;:;fu. (6
12. 13.
14. 15.
(6
(a)
Hfhat is meant-by
G)
\{hat are peripherat
(a)
(6
Explain the workingprinciple
(6
sieal conditioning ,L*
t"t""f.;;;;rs ? Explain. ,*"-**r."" used for temperatur€measurerent. &) whatareprogrammabler;";;lers?E ptui.r: Write nores on drsrt"t Communieari"J;t"_" la) G) With suitable examples, explain the need for protocol. Obtain the transfer tunction &(S)riliin Figure 2.
(6
(6 (o (6
Fig.2.
16.
Or Derive the transfer function of the electrical network shown in Figure
(12 marks) B.
Fig.a (12 marks)
,Gfl r
G 5S4
3
K t7 -
tte
open hop transfer firnction of a unity 4 feed back system is given bry s(1 + O.,*s) (1 + O.25s)
&e valves of Kfor urhich
(6 marl
fu
c,hsd loop system is absolutely sable. (12 Earks)
I to *r* [,.*,* Fto
'Find
Or
lg
*r't
tfu system shown in Figrrre 4 determine tbe vahre ofE such that tlre damping ratio is 0.5- Also obtaia the values of rise time and marimum over shsot in its step responseF
or
Ivu.""*, pro fuo
narts
*""t"
F-** E
t
Frg'5' (12 marks)
F
L
19- (a) What are polar plots G)
?
Sketch the polar plot of G(s) =
il*,
(8 marks)
(4 marks)
State Nyquist stability criterion.
Or
I
(a) The forward transfer f,unction of a unity feedback contrsl system is given by
r5xLZ=t#ffii tt t F
F
k t r
;
L*,
E-----
I
(Pages : 2) I I i
B.TECH. DEGREE EXAMINATION, NOVEMBER
l+"ing. i (tz
Fifth
2OO9
Sernester
I
fneuts.
Branch
: Mechanical Engineering/Automobile Engineering
i
MECHATRONICS AND CONTROL SYSTEMS I
|
(Re
(12 mr
ptain
gular/SupplementarY) Maximum : 100 Marks
Hours
ttre
Jrrsu'er all the quesliorts.
i I
Part A
I
fuogp-p", i
| 12
Each questiott. t:on'i,es 4 nmrks.
(r2 ma
is a dummy strain gauge
?
are the most common types of display system
= 60 mar
i
?
ish between active and passive transducersthe construction of a piezoelectric pickup-
i
f,fat
voltage follower configuration of op'amps. are proximity sensors ? Explain different types, a Servo control system.
ish between Static and Dynamic characteristics. is Nyquist stability criteria. ish between Microprocessors and Microcontrollers.
(10x4=40marks) Part B Each Etestion corries 12 ntarlzs. nrf'lain the different types of strain gauges and their applications. Erylain the construction and working of any one type of proximity sensors'
(7 marks)
(5 marks)
Or
SLat are the common
op-amp configurations
(5 rnarks)
?
(7 marks)
Erylaln the different signal conditioning methods. trilplaln programmable logic controllers.
Orstruct a ladder diagram the operate a pump nertead tank is fuIl.
' (4 marks) when water level is low and to stop
it after an (8 marks)
Or
Turn over
14.
I5.
F78
(a) Explain the working of an electronic pacemaker. (b) Explain the principle of computerised tomographic (CAT) scan. (a) Compute the transfer function for the following electricar
(8 mar (4 mark
circuit in Fig I-
FrC
(b)
What is a first order system
I
'.10 ma ?
(2 marks
Or
16'
,H:lxj"jfrTil:n'"ical
svstem in Fig 2 construct the block diagram model and find the
Fig 2
17. Draw the Bode plot asymptotes for a system with tranfer function
(I2 marks) :
I (2s +
l8'
l)
l)'
Or
ffiil,m;i':"tril,jjtts
19' Fhd
? How can vou
find the stabilitv of a system from root locus plots
the stability range for K of a system represented by the equations G(s) = -A(s +
20'
(0.bs +
l)"
?
(12 marks) :
and H(s) = l.
Or Eaplain the Routh-Hurwitz criteria for stability of a control system based of the location of poles(12 marks)
[5x 12=60ma
I
I
IF I I
(pages g)
L
I
Reg.
B.TECH.DEGREE@
NovEnmER
i
Fifth Semester
I L
I
................
Name........ 44a....a....a........a...........
I
[o6650'
No... 2008
Branch : Mechanical and Automobile MECHATRONICS AND CONTROL SYSTEMS (MU) (Regular/Supplement"ry)
I
Maximum : 100 Marks
Part A
u
Answer all questions. carries 4 ma,rks.
bthediagram ,r^*^*r!fflquestion - -'rntrol system
d[c
"rbil;;. involved.
; #ilil"J,',"j],:i::3^-"::1:".'n"
lffi
il
using microprocessor. Briefly explain the working
workingprincipre oranv ane tvpeortransducer.
:;*'::"tionaramprinerr*'**";'--"*il:::""1r'Jffi controrer.
mile a note,"
.*::sducer'
;::ffiT:#c
o' &reatiate between open-roop and crosed-loop control systems. m illrrtr a note on block diagram reduction.
n me
usual notations, derive the relation
m n ma
fu
C(s)/R(s)_ - \"'" ^'(5/' -
G(s)
ild1.ili6
for a crosed Ioop control
neant by steady state error ? Determine the st--ady state e*or for t unit ramp input when the varue olx ro" which th" ,;;;;y state error to
H,"S;l;;
;il;'"#rmine
a
Fig.
unit
I Ttrnr over
,, .
.._ 10'
-..
\
2
E€56[
-:l'----:
Ulhat are trade plots ? How will you obtain gain margin and phase margin from the trade plot
.
_".:
i.:.,:-.,.' ..,.. . .partB,r f ;., .
,. .,
l
?
(10x4=40 marks) .:.
Answer qll questions. Each.ques.tion carries LZ marks. 11.
(a)
Explain the principle ofoperation of Hall effect transducer.
(b) Write notes j
':rj'j
t:.,,',,:
T-.t,.tt
L2.
13.
' on pneumatic and hydraqlic systems,, i
...;,,1
what is meant by data acquisition
r
Or
,:,,,::
(a) What is meant by signal conditioning (b) Write a note on multiplexers. system
!
?
?
"
(6 marks) (6 marks)
'
'
Erplain. fi
-.
:
.
.:..
(6 marks)
'
what are the
?
(6 marks)
subsystems and elements involved
in such
a
Or
L4' Differentiate between Mechatronic designs and fractional designq with suitable 15' Determine the pole-zero configurations of the network shown in Fig. 2 Given R
Fis.2 Or
16. Find,c(s)/B{s)
using block diagram reduction techniques in Fig.
R(r)*
Fig.3
B.
examples.
=
1 c)
and C = IF.
F 3560
I svo mechanisms is designed a radar antenna pointed at a flying airplane with a *dtv of 600 kmtrr'-at t i""g" toorkeep z-km. The *;;; error is to be within 0.1". eraine the required verocityioo. *"m.ient the system istracking shown in Fig.
4.
Fig.4 Or
rftt
fi$
f) :
feedback system has open-loop transfer function G(s)=
s(1 + s) (1 + 2s)'
Sketch the
plot for the system. Also obtain the gain margin and phase margin. equation ofa feedback control system is 2
s4 + 20s2 +l5s + 2s + k _ 0. Determine the range of K for which the system is stable. stabre ? rf so, find the required varue of K and the frequency
ffHfiTil,f"ffirnalrv
Or
&e root locii for G (s)=
##d
for a unity feedback systems. (5 x 12 = 60 mar}s)
\-N " .>
8
(Pages :3)
Beg. No. Name
B.TECH. DEGBEE DGMINATION, IiIAY
Fifth
2OO8
Semester
Branch-Mechanical Engineering/Automobile Engineering MECHATRONICS AND CONTROL SYSTEMS (M, {, (20
:ltree
0
2
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Hours
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tary) Maximum:
Attswer
all
100 Marks
questions.
Part A Give features of a operational amplifier.
Erylain working principle of a proximity sensor. That is the need for a protocol ? Give examples.
