View
239
Download
0
Category
Preview:
Citation preview
7/31/2019 Cs Mannual Final
1/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 1
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR
DEPARTMENT OF ELECTRICAL ENGINEERING
Control System Engineering Lab
INDEX
Sr.
No
Name of Experiment Page
No.
1 To study Synchro Transmitter 2
2 To study Synchro Transmitter and Receiver in pair 4
3 To plot speed torque characteristics & speed Vs back emf characteristicsof A.C servomotor.
6
4 To measure basic step angle of Stepper Motor 9
5 To study potentiometer as a transducer and error detector. 11
6 To study the time response of simulated Linear Systems Simulator 13
7 To plot Root locus by Using MATLAB Software 16
8 To study transient response of second order system using R, L, C series
circuit.
17
7/31/2019 Cs Mannual Final
2/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 2
EXPERIMENT NO: 1
AIM: -To study Synchro Transmitter
APPARATUS: - 1) Synchro2) Multimeter
CIRCUIT DIAGRAM: -
S2
R1
V
V/2V/2
STATOR
WINDING OF
TRANSMITTER
AC LINE
ROTOR
WINDING OF
TRANSMITTER
S1 S3
R2
TORQUE TRANSMISSION USING SYNCHRO TRANMITTER
V23
V12
V31
THEORY:- Theory should cover details about following points.
1 Constructional details of Synchro Transmitter2 Constructional details of Synchro Receiver3 Operation of Synchro Transmitter Receiver in pairs.4 Advantages and disadvantages of Synchro.5 Application of Synchro.
PROCEDURE: -
1) Connect the system to main supply2) Switch on the main switch and SW13) Do not connect any wires between the stator winding of TX & TR.4) Starting from zero position (i.e. Knob of synchro transmitter at 0 degree) note- down
the voltages between stator terminals i.e. VS S1 , VS2S3 , & VS3 S4 in a sequential
fashion .5) Rotate the knob by 30 degree and again note down Vs1S2 , VS2S3 & VS3 S16) Repeat step no.05 for further rotation by 30 degree (i.e. knob at 60 degree now)
7/31/2019 Cs Mannual Final
3/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 3
7) Like this make one complete rotation of 36 degree and note the readings in a tabularform.
OBSERVATION TABLE: -
Sr. No Position of
Rotor inDegrees
Stator Voltage or terminal voltage ( RMS value )
1 0 degree Vs1S2 VS2S3 VS3S1
2 30 degree
3 60 degree
4 .
5 .
6 .
7.
12 330 degree
13 360 degree
GRAPH: - Plot a graph of angular position VS voltage for all the three phases .
RESULT: -The synchro Transmitter was studied and waveform of stator winding voltages
was plotted on graph .
CONCLUSION: - : It is observed that due to transformer action, the angular position of
rotor is transferred into a unique set of stator voltage, viz. VS1S2 , VS2.S3 & VS2S1.
VIVA QUESTIONS:
1) Explain the working of synchro transmitter as transducer?2) Write application of synchro transmitter as transducer?
7/31/2019 Cs Mannual Final
4/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 4
EXPERIMENT NO: 2
AIM: -To study Synchro Transmitter and Receiver in pair.
APPARATUS: - Synchro Transmitter & Receiver Kit
CIRCUIT DIAGRAM :-S2 S2
V
V/2V/2
R1 R1
V
V/2V/2
STATOR
WINDING OF
TRANSMITTER
STATOR
WINDING OF
RECEIVER
AC LINE
ROTOR
WINDING OF
TRANSMITTER
ROTOR WINDING
OF RECEIVER
S1 S3S1 S3
R2 R2
TORQUE TRANSMISSION USING SYNCHRO TRANMITTER
S2 S2
0
3V/2
3V/20
STATOR
WINDING OF
TRANSMITTER
STATOR
WINDING OF
RECEIVER
AC LINE
ROTOR
WINDING OF
TRANSMITTER
ROTOR WINDING
OF RECEIVER
S1 S3S1 S3
R2 R2
TORQUE TRANSMISSION USING SYNCHRO
TRANMITTER AND RECEIVER AS PAIR
3V/2
3V/2
30
7/31/2019 Cs Mannual Final
5/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 5
THEORY: -Theory should cover details about following points.
2. Constructional details of Synchro Transmitter3. Constructional details of Synchro Receiver4. Operation of synchro transmitter receiver in pair.5.
Advantages and disadvantages of synchro.6. Application of synchro.
PROCEDURE: -1) Connect the system to main supply2) With the help of patch cord establish connections between corresponding terminals of
TX & TR stators. i.e. connect S1 to S1 , S2to S2 and S3 to S3 of TX & TR statorrespectively .
3) Switch on SW1 & SW2 as well as main of instrument.4) Move the pointer (rotor position of TX in steps of 30 degrees and observe the new
position of TR.
5)
Enter the input angular position & output angular position in the tabulator from &plot the graph.
OBSERAVTION TABLE: -
Sr. No
Synchro Transmitter Synchro Receiver
1. 0
2. 30
.
.
. 33012. 360 = 0 degree
13.
GRAPH: - Plot the graph between O/P angular position ( Receiver side ) Vs input
angular position ( Transmitter side )
RESULT: - The Synchro Transmitter Receiver in pair or as an error detector was studied
.
CONCLUSION:-
VIVA QUESTIONS:1) Compare the constructional difference between the synchro
transmitter and synchro-receiver?
2) Write the application of the synchro transmitter and synchro-receiveras pair?
7/31/2019 Cs Mannual Final
6/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 6
EXPERIMENT NO: 3
AIM: - To plot speed torque characteristics & speed Vs back emf characteristics of
A.C servomotor .
APPARATUS: -
1) AC Servomotor set2) Multimeter
CIRCUIT DIAGRAM: -
110V
0V
M2
RECTIFIER AND
REGULATOR
PCB 1 -- PCB3
ETP3
-
+
LIGHT
SOURCE
PHOTO
PICKUP
ROTATING
DISC
TP2
TO
LAMP
Eb
TP1
- +
SIGNAL
PROCESSINGPCB2
M1
RPM
SPEED
CALIBERATION
10K /8W
C /1mfd
P1A.C.
230V
ACSM
REF. WINDING
DCM
P2
VR
(TP2)
LOAD
CONTROL
BLOCK DIAGRAM OF AC SERVOMOTOR
7/31/2019 Cs Mannual Final
7/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 7
THEORY: - Theory should cover details about following points
1) Description of set up.2) What is Servomotor? Give their classification in brief?3) The requirements or desirable features of servomotors.4) Constructional details of AC Servomotors.5) Working6)
Point of differences between AC servomotor & normal Induction Motor.7) Application
PROCEDURE: -1) Study all the controls carefully on the front panel. Keep the switch SW1,
in upward position, indicating that the armature circuit of dc. Machine is
not connected o Auxiliary power supply, switch SW2 should also be inoff position.
2) Ensure P1 & p2 are in fully anticlockwise position.
3) Note switch ON SW1 & also switch SW2, you can observe that ACservomotor will start rotating & the speed will be Indicated by the meter M1on the front panel .
4) Also SW3 in OFF condition, vary the speed of by moving P1 in a clockwise
direction and note the emf. gnerated by the D.C. machine ( now working as adc generator or tacho) At terminal Tp1 . Enter the results in Table no-01 (
Use a DC voltmeter in the range of 0-to 2 volt or so .)
5) Now switch SW3 , in off condition , switch ON SW2 and keep the pot , P1
in minimum position / You can observe that the AC servomotor starts
moving with speed being indicated by the RPM indicator . You can measurethe reference winding voltage (which is variable by pot P1)
6) Set the control winding voltage to 35 volt and the note the speed of A.C.
Servomotor by controlling Pot P2 in a slow fashion. Note down corresponding
values of Ia & on meter M2 & RPM meter M1 respectively. Enter these valuesin Table 2.
8) Now switch off SW3 & set the control wining voltages to 45 volt & 55 voltrespectively & repeat the procedure as in step 5 .
9) Polt the speed torque characteristics for various values of control windingvoltage.
7/31/2019 Cs Mannual Final
8/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 8
OBSERVATION TABLE : -
TABLE NO:- 01(Table indicates only procedure)
Sr.No N
(in RPM )
Eb ( in volt)
1 1175 -1.35
2 1125 -1.31
3 1100 -1.26
4 -- --
5 -- --
6 -- --
- -- --
TABLE NO:- 02(Table indicates only procedure )
Control winding voltage = Vc = 35 volt .
Sr.No I
(in MA)
Speed N
( in PM )
Eb
( in volts )
Pmw = ( Eb ) .(Ia)
( in mill watt)
Torque in
(gm-cm)
1 0 1475 1.47 0 0
2 200 1400 1.4 280 19.46
3 300 1350 1.35 405 29.19
4 -- -- -- -- --
. -- -- -- -- --
. --- --- --- --- ---
NOTE: - Torque T= ( P* 1.019* 104 *60 / 2N gm = Cm
GRAPH: - 1) Plot a graph for back e.m.f. ( in mV) Vs speed in RPM
2) Torque -speed characteristics of AC servomotorRESULT: - Torque speed characteristics for AC servomotor & back e.m.f. Vs speed
characteristics was studied and graph are plotted.
CONCLUSION: -Note the readings in a tabular form.
VIVA QUESTIONS: -1) What is Servomotor? Give their classification in brief2) Explain the torque speed characteristics of AC servomotor?
7/31/2019 Cs Mannual Final
9/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 9
EXPERIMENT NO: 4
AIM: -To measure basic step angle of Stepper Motor
APPARATUS: - Stepper motor set up.
CIRCUIT DIAGRAM: -
PULSE
SEQUENCE
GENERATOR
uPINTERFACE
1
2
3
4
POWER
DRIVER
Y TRIG
SINGLE STEP
CW CCW
PHASE
FREE
RUN WOBLE
FREQ
STEPPER MOTOR
PANEL DRAWING
ON
THEORY: - Theory should cover details about the following points .
1 Equipment description.3) Construction of stepper motor4) Working5) Application
PROCEDURE: -
1) Connect the motor unit to main unit & switch on the supply2) Keep switch S1 to manual stepping.3) Select clockwise (CW) rotation.4) Connect all phases to the corresponding drives.5) Press the manual stepping push button inn multiples of 10 pulses & note the
change in angular position from the dial
6) Calculate the average basic step angle.7) Repeat the above step selecting counter clockwise (CCW) directions rotation.
7/31/2019 Cs Mannual Final
10/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 10
OBSERVATION TABLE:-
Sr. No Direction of
Rotation
Angle
subtended in 10steps ( indegrees )
Angle
subtended inone step ( indegrees)
Average basic
step angle ( indegrees)
1. CW ----- ----- -----
2. CCw ----- ----- ----
RESULT:- Basic step angle of stepper motor in found to be .
CONCLUSION:-
VIVA QUESTIONS: -1) Explain the different types of stepper motor?2) What is importance of stepper motor as per industrial purpose?3) Write the application of stepper motor?
7/31/2019 Cs Mannual Final
11/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 11
EXPERIMENT NO: 5
AIM: -To study potentiometer as a transducer and error detector.
APPARATUS: - 1) 10 Turn precision helical potentiometer
2) Multimeter
CIRCUIT DIAGRAM: -
2.21 VOLTS
POTENTIOMETRIC ERROR DETECTOR
POT 1 POT 2
+
_
BALANCED
DEMODULATOR
AC DC
EXCITATION
ON
+
_
INSRUMENTATIONAMPLIFIER
Vo
V1 V2
BALANCED DEMODULATOR
CARRIER(Internal)
SCHEMATIC DIAGRAM
AC / DC
EXCITATION
POT 1POT 2
7/31/2019 Cs Mannual Final
12/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 12
THEORY: - Theory should cover details about following points.
1) Equipment Description2) Building Blocks3)
Experimental Work
PROCEDURE: - 1) Connect the main cord to supply line & switch on the main switch &device button.
2) Adjust the output voltage of potentiometer to zero by rotating the knob
of potentiometer in anticlockwise direction. (note that we are using
only one side i.e. one potentiometer).3) Measure the input voltage between I/P and ground.
4) Now rotate potentiometer knob by one rotation i.e. 3600
& measure o/p
voltage between terminals, O/P & ground. It will be approximately(1/10)th of I/P voltage (Because the potentiometer on which we are
working is 10 turn potentiometer) .5) Repeat step no 4 ten times. At the end of tenth rotation O/P voltage isequal to input voltage.
OBSERVATION TABLE: -
Sr. No. Angular Position (in
Degrees)
Output voltage (in Volts)
1 100 0
3600 3.6
750
0
0.721080
01.08
GRAPH: - Plot a graph for angular position Vs O/P voltage
RESULT: - Potentiometer as a transducer was studied & graph is plottedbetween angular position Vs output voltage.
CONCLUSION: -
VIVA QUESTIONS: -
1) Explain the working of potentiometer?2) Write the application of potentiometer?
7/31/2019 Cs Mannual Final
13/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 13
EXPERIMENT NO: 6
AIM: - To study the time response of simulated Linear Systems Simulator
APPARATUS: - Linear System Simulator KIT
CIRCUIT DIAGRAM: -
+K1
-----
S
- 1
K
Rs Cs
+
K3
------------
ST2 + 1K
-1
Rs Cs
CLOSED LOOP OPTION FOR FIRST ORDER
SYSTEMS
G(s)
-
+
REFERENCE OR
COMMAND
SYSTEM
MEASUREMENT
DECISION
MAKING
BLOCKED DIAGRAM OF A CLOSED LOOP SYSTEM
Cs
7/31/2019 Cs Mannual Final
14/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 14
K
--
S
C(t)
C(t) = Kt
t
Y(t)
t
1
K
----------
ST + 1
r(t)
1
t
C(t)
t
.632K
K
T
C(t) = K(1 - e-t/T)
UNIT STEP RESPONSE OF FIRST ORDER TRANSFER FUNCTIONS
THEORY: - Theory should cover details about the following points.1 Equipment description.2 Construction of Linear System Simulator3 Working4 Application
PROCEDURE: - For Open Loop Response
1) Note down the value of K1, K2, K3 and T1 , T22) Error detector cum variable gain
a) Apply a 100 mV square wave signal to any of the three inputsb) Set the gain setting potentiometer to 10.0( v=0)c) Measure the P-P output voltage and note its sign. Calculate the
gain. This is the maximum value of gain.
d) Repeats for other two inputs.e) Write the equation of this block and verify by connecting the signal
to all three inputs.
3) Disturbance addera) Test it in same manner as a)
4) Uncommitted amplifiera) Apply a 1 volt p-p square input .b) Measure the p-p output voltage and note its sign.c) Record the equation of this block for later use.
5) Integratora) Apply a 1 volt p-p square input.b) Measure the p-p output voltage and note its sign.c) Calculate the gain constant K of integrator and write transfer
function of block.
7/31/2019 Cs Mannual Final
15/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 15
6) Time constanta) Apply 100mV p-p square wave of known frequency to ensure that
steady state.
b)
Find on the trace the time t= T, where response reaches to 63.2 %.c) K= ( p-p steady state output / p-p input amplitude )d) Write transfer function of block
First Order System - Closed Loop Response
b) Apply a 1 volt p-p square input. trace the o/p waveforms , for K=0.5 , 1.0, 1.5 .
c) Calculate the time constant in each case compare it withtheoretical results.
d) Calculate steady state errors for the above case .e)
To find steady state error for ramp input, apply 1V p-p triangularwave input . connect system i/p to X input and output to Y input
f) The vertical displacement between the two curves is the steadystate error.
g) Repeat the measurement for different values of K and comparethe results with theoretical values.
RESULT: - We studied the first order open loop and closed loop system with linear systemsimulator.
VIVA QUESTIONS: -
1) Explain the different standard input of control system?2) Explain the effect of feedback element on control system?
7/31/2019 Cs Mannual Final
16/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 16
EXPERIMENT NO: 7
AIM: - To plot Root locus by Using MATLAB Software
Problem: - Sketch the root locus for the transfer function given below.
10
G(S) = ---------------------------------------
S (S+1) (S+2) (S+4)
THEORY: - Theory should cover the following points .
1) Explain about MATLAB Software2) Write steps to plot Root Locus3) Advantages of using software for analysis.
PROCEDURE:- 1) Solve the problem manually
2)By using MATLAB software feed the data as above problem.
3) Do the analysis by MATLAB software4) Compare both the result
RESULT: - Result obtained manually are as results obtained by software .
By using software we can do analysis of large system.
7/31/2019 Cs Mannual Final
17/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 17
EXPERIMENT NO: 8
AIM: - To study transient response of second order system using R, L, C series circuit.
APPARATUS: -1) Function Generator2) Cathode Ray oscilloscope
3) Capacitance box4) Resistance box5) Inductance box
CIRCUIT DIAGRAM: -
THEORY: - The theory should contain the details about following points .
1. Definition of Time response , Transient response and steady stateresponse2. Type and order of system.3. Time response specification viz. Delay time ., rise time Peak time ,
Overshoot , Settling time , steady state error ( write down expressionsfor these specification )
PROCEDURE: -(1) Connect R, L, C in series and give supply to this series combination
through function generator . Connect CRO across capacitance box.
(2) Give a supply of 2 volt ( peak to peak) by function generator .(Measure this on CRO )(3) By varying R, L, C as well as adjusting frequency to a suitable get the
time response on CRO.(4) Note all the time response specifications and draw the response on graph
paper.
7/31/2019 Cs Mannual Final
18/18
DEPARTMENT OF ELECTRICAL ENGINEERING VITH
SEM B.E.ELECTRICAL
G H RAISONI COLLEGE OF ENGINEERING NAGPUR 18
OBSERVATION TABLE: -
Input voltage (P-P) =-------------------------- Input frequency: ---------------------------
Sr.
No
R L C tr tp % Mp
1
2.
3.
SPCIMEN CALCULATION:-
(1) = R/2 ( C / L)(2) n= 1/ ( l.C)(3)
tr = -----------------
n 1- 2(4) % Mp = 100 e - 1- 2
GRAPH : - Sketch the complete time response on graph paper .
RESULT: - The time response of second order RLC series circuit was studied and plottedon graph paper.
VIVA QUESTIONS: -
1) Explain the steady state and transient response?2) Explain the classification of control system according to the
damping ratio?
Recommended