C
Name Matric no. Section:
1.
Instructors’ name:
2.
3.
Title Time/ Date
Experiment 1
1. Introduction to Open Loop and Closed Loop Position Control System
FOR INSTRUCTORS USE ONLY
Domain Item Subtotal Total
C Question /20 /20
P Lab activities /30
/60 Results and analysis /25
Conclusion /05
A Demonstration (understanding) /10
/20 Ethics /10
TOTAL MARKS /100
BEE20901 - Electronic Engineering Laboratory II
Instruction Sheet
Control Laboratory
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FKEE, SEM1 Session 2019/20
Experiment 1
Introduction to Open Loop and Closed Loop Position Control System
Table of Content
Table of Content ii
Instruction 1
1.0 Title –Experiment 1 1
2.0 Outcomes 1
3.0 Overview 2
4.0 List of Equipment 3
5.0 Experiment Procedures 3
6.0 Results and Analysis 6
7.0 Questions 8
8.0 Conclusions (5 marks) 10
9.0 Related course(s) 11
10.0 References 11
Fakulti/Pusat Pengajian (Faculty/Centre) :
Faculty of Electrical and Electronic Engineering
Mukasurat (Page):
1
Kod Kursus (Course Code):
BEE 20901
Nama Kursus (Name of Course) :
Electronic Engineering Laboratory II
Kursus Pra Syarat (Prerequisite Courses) :
None
Kredit
(Credit):
2
Kuliah
(Lecture):
0
Tutorial :
0
Amali
(Practical):
2
Edisi (Edition) : 2 Tarikh Keluaran (Published date) : Ogos 2019
FKEE, SEM1 Session 2019/20
Instruction
1. Grouping: Lab group is not predetermined and consists of 3 members (maximum).
2. Pre-Lab Assignment (if any): Must be submitted to the instructor at the beginning of lab
sessions. Verified by the instructor and returned to the students at the end of lab session. The
verified pre-lab must be attached with the final report for submission.
3. Lab Activities: All laboratory activities must be carried out in this laboratory and to be
completed within the given times.
4. Demonstration: Student must demonstrate the experiment to the respective instructor.
5. Report Submission: Report must be submitted to the respective instructor upon
COMPLETION of lab session.
1.0 Title –Experiment 1
Introduction to Open Loop and Closed Loop Position Control System
2.0 Outcomes
After completing this laboratory, student should be able to:
2.1 Analyze the characteristic of an open-loop and closed loop servo motor position control
system.( PLO2-PS-C4)
2.2 Organize time management in group effectively according task given. (PLO5-TS-P5)
2.3 Demonstrate good leadership skill during laboratory experiment. (PLO9-LS-A3)
Fakulti/Pusat Pengajian (Faculty/Centre) :
Faculty of Electrical and Electronic Engineering
Mukasurat (Page):
2
Kod Kursus (Course Code):
BEE 20901
Nama Kursus (Name of Course) :
Electronic Engineering Laboratory II
Kursus Pra Syarat (Prerequisite Courses) :
None
Kredit
(Credit):
2
Kuliah
(Lecture):
0
Tutorial :
0
Amali
(Practical):
2
Edisi (Edition) : 2 Tarikh Keluaran (Published date) : Ogos 2019
FKEE, SEM1 Session 2019/20
3.0 Overview
EXPERIMENT 1 (a)
Figure 1 shows the block diagram of an open loop position control system. From this figure, the
output shaft will move when the amplifier receives an input from the input shaft. The output shaft
will not move if this input is zero. This means that when the output shaft is rotating towards a
desired angle, the input signal must be reduced to zero immediately when the output shaft is very
close to this angle.
Figure 1: Block diagram of an open loop position control system
EXPERIMENT 1 (b)
Figure 2 shows the block diagram for a closed loop position control system. In the absence of load
disturbances, the motor can only cease to move when the output shaft position is exactly equal to
the input shaft position otherwise an error voltage will exist which will be amplified by the
amplifier. The output of this amplifier will force the motor to move.
Figure 2: Block diagram of the closed loop position control system
Input
potentiometer Amplifier Motor Load
Input
shaft, θi Output
shaft, θo
Output
shaft, θo
Input
shaft, θi + Amplifier Motor Load
Input
potentiometer -
Output
potentiometer
Fakulti/Pusat Pengajian (Faculty/Centre) :
Faculty of Electrical and Electronic Engineering
Mukasurat (Page):
3
Kod Kursus (Course Code):
BEE 20901
Nama Kursus (Name of Course) :
Electronic Engineering Laboratory II
Kursus Pra Syarat (Prerequisite Courses) :
None
Kredit
(Credit):
2
Kuliah
(Lecture):
0
Tutorial :
0
Amali
(Practical):
2
Edisi (Edition) : 2 Tarikh Keluaran (Published date) : Ogos 2019
FKEE, SEM1 Session 2019/20
4.0 List of Equipment
4.1 Power Supply Power Supply Module PS150E
4.2 Servo Amplifier Module SA150D
4.3 Direct Current Motor Module DCM150F
4.4 Attenuator Unit Module AU150B
4.5 Output Potentiometer Module IP150K
4.6 Tacho Unit Module GT150X 4.7 Input Potentiometer Module IP150H
5.0 Experiment Procedures 5.1 EXPERIMENT 1 (a): OPEN LOOP POSITION CONTROL SYSTEM
5.1.1 Connect the circuit as shown in Figure 3. Set both the Input and Output potentiometers to
zero. Do not switch on the Power Supply until your circuit has been checked by the
instructor. Switch “ON” the Power Supply and set the scale of the Attenuator Unit to 1.
5.1.2 Turn the Input Potentiometer clockwise and record its angle when the Output Potentiometer
has just started to move. Record the input voltage by reading the display on the Tacho Unit.
Repeat this step for anti-clockwise rotation of the Input Potentiometer.
5.1.3 Repeat steps 5.1.2 for other scales on the Attenuator Unit and tabulate your results.
5.1.4 Vary the Input Potentiometer so that the Output Potentiometer is at particular angle (decide
by yourself). When the Output Potentiometer has been finally positioned at your set angle,
apply some disturbance to the output shaft by turning the shaft using your fingers and
observe the Output Potentiometer.
5.1.5 Switch “OFF” the Power Supply.
5.2 EXPERIMENT 1 (b): CLOSED LOOP POSITION CONTROL SYSTEM
5.2.1 Connect the circuit as shown in Figure 4.
5.2.2 Set the switch on the Operational Amplifier unit to 100k Ω resistor.
5.2.3 Set both the Attenuator and the Input Potentiometer to zero.
5.2.4 Switch “ON” the Power Supply. If the motor rotates continuously, vary the zero set on the
Pre-Amplifier unit until the motor stops.
Fakulti/Pusat Pengajian (Faculty/Centre) :
Faculty of Electrical and Electronic Engineering
Mukasurat (Page):
4
Kod Kursus (Course Code):
BEE 20901
Nama Kursus (Name of Course) :
Electronic Engineering Laboratory II
Kursus Pra Syarat (Prerequisite Courses) :
None
Kredit
(Credit):
2
Kuliah
(Lecture):
0
Tutorial :
0
Amali
(Practical):
2
Edisi (Edition) : 2 Tarikh Keluaran (Published date) : Ogos 2019
FKEE, SEM1 Session 2019/20
5.2.5 Set the scale on the Attenuator to 1 and vary the zero set on the Pre-Amplifier unit so that
the Output Potentiometer is zero. Turn the Input Potentiometer clockwise and anti-
clockwise. Observe and note down the movement of the Output Potentiometer.
5.2.6 Vary the Input Potentiometer so that the Output Potentiometer is any desired angle. Apply
some disturbance to the output shaft by using your fingers.
Increase the applied torque and observe the ammeter reading on the Power supply unit.
Make sure that the motor current does not exceed 2 Amp.
5.2.7 Switch “OFF” the Power Supply.
Figure 3: Circuit for the open loop position control system
Fakulti/Pusat Pengajian (Faculty/Centre) :
Faculty of Electrical and Electronic Engineering
Mukasurat (Page):
5
Kod Kursus (Course Code):
BEE 20901
Nama Kursus (Name of Course) :
Electronic Engineering Laboratory II
Kursus Pra Syarat (Prerequisite Courses) :
None
Kredit
(Credit):
2
Kuliah
(Lecture):
0
Tutorial :
0
Amali
(Practical):
2
Edisi (Edition) : 2 Tarikh Keluaran (Published date) : Ogos 2019
FKEE, SEM1 Session 2019/20
Figure 4: Circuit for the closed loop position control system
Fakulti/Pusat Pengajian (Faculty/Centre) :
Faculty of Electrical and Electronic Engineering
Mukasurat (Page):
6
Kod Kursus (Course Code):
BEE 20901
Nama Kursus (Name of Course) :
Electronic Engineering Laboratory II
Kursus Pra Syarat (Prerequisite Courses) :
None
Kredit
(Credit):
2
Kuliah
(Lecture):
0
Tutorial :
0
Amali
(Practical):
2
Edisi (Edition) : 2 Tarikh Keluaran (Published date) : Ogos 2019
FKEE, SEM1 Session 2019/20
6.0 Results and Analysis Experiment 1 (a)
6.1 Result for procedure 5.1.3 (12 marks)
Table 1: Display on the Tachometer
Input
Potentiometer
direction
Attenuator
gain
Input
Potentiometer
angle
Input Voltage
Clockwise
Anti -Clockwise
Clockwise
Anti -Clockwise
Clockwise
Anti -Clockwise
6.2 Results analysis for procedure 5.1.4 (4 marks)
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
_____________________________________________________________________________
Fakulti/Pusat Pengajian (Faculty/Centre) :
Faculty of Electrical and Electronic Engineering
Mukasurat (Page):
7
Kod Kursus (Course Code):
BEE 20901
Nama Kursus (Name of Course) :
Electronic Engineering Laboratory II
Kursus Pra Syarat (Prerequisite Courses) :
None
Kredit
(Credit):
2
Kuliah
(Lecture):
0
Tutorial :
0
Amali
(Practical):
2
Edisi (Edition) : 2 Tarikh Keluaran (Published date) : Ogos 2019
FKEE, SEM1 Session 2019/20
Experiment 1 (b)
6.3 Results analysis for procedure 5.2.5. (4 marks)
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
_____________________________________________________________________________
6.4 Results analysis for procedure 5.2.6. (5 marks)
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
_____________________________________________________________________________
Fakulti/Pusat Pengajian (Faculty/Centre) :
Faculty of Electrical and Electronic Engineering
Mukasurat (Page):
8
Kod Kursus (Course Code):
BEE 20901
Nama Kursus (Name of Course) :
Electronic Engineering Laboratory II
Kursus Pra Syarat (Prerequisite Courses) :
None
Kredit
(Credit):
2
Kuliah
(Lecture):
0
Tutorial :
0
Amali
(Practical):
2
Edisi (Edition) : 2 Tarikh Keluaran (Published date) : Ogos 2019
FKEE, SEM1 Session 2019/20
7.0 Questions
Experiment 1 (a)
7.1 Explain why an input voltage exists for the motor just started to move. (2 marks)
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
7.2 What is the function of the Attenuator Unit? (2 marks)
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
7.3 What is the relationship between scale on this attenuator unit and the input voltage range?
(4 marks)
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
7.4 What is the effect of this scale on the sensitivity of this control system? (2 marks)
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
Fakulti/Pusat Pengajian (Faculty/Centre) :
Faculty of Electrical and Electronic Engineering
Mukasurat (Page):
9
Kod Kursus (Course Code):
BEE 20901
Nama Kursus (Name of Course) :
Electronic Engineering Laboratory II
Kursus Pra Syarat (Prerequisite Courses) :
None
Kredit
(Credit):
2
Kuliah
(Lecture):
0
Tutorial :
0
Amali
(Practical):
2
Edisi (Edition) : 2 Tarikh Keluaran (Published date) : Ogos 2019
FKEE, SEM1 Session 2019/20
7.5 Explain why this type of control system is difficult? (2 marks)
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
7.6 Note down your observation and deduce the disadvantage of practical systems. (3 marks)
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
7.7 Give your suggestion on how to overcome this problem. (2 marks)
________________________________________________________________________
________________________________________________________________________
Experiment 1 (b)
7.8 Explain why the larger the applied torque, the larger will be the meter reading. (3 marks)
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
Fakulti/Pusat Pengajian (Faculty/Centre) :
Faculty of Electrical and Electronic Engineering
Mukasurat (Page):
10
Kod Kursus (Course Code):
BEE 20901
Nama Kursus (Name of Course) :
Electronic Engineering Laboratory II
Kursus Pra Syarat (Prerequisite Courses) :
None
Kredit
(Credit):
2
Kuliah
(Lecture):
0
Tutorial :
0
Amali
(Practical):
2
Edisi (Edition) : 2 Tarikh Keluaran (Published date) : Ogos 2019
FKEE, SEM1 Session 2019/20
8.0 Conclusions (5 marks)
Experiment 1 (a)
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
_____________________________________________________________________________
Experiment 1 (b)
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Fakulti/Pusat Pengajian (Faculty/Centre) :
Faculty of Electrical and Electronic Engineering
Mukasurat (Page):
11
Kod Kursus (Course Code):
BEE 20901
Nama Kursus (Name of Course) :
Electronic Engineering Laboratory II
Kursus Pra Syarat (Prerequisite Courses) :
None
Kredit
(Credit):
2
Kuliah
(Lecture):
0
Tutorial :
0
Amali
(Practical):
2
Edisi (Edition) : 2 Tarikh Keluaran (Published date) : Ogos 2019
FKEE, SEM1 Session 2019/20
9.0 Related course(s)
BEH22003 - Instrumentation and Control
10.0 References
1. C. A. Smith, and A. B. Corripio. Principles and Practice of Automatic Process Control, 3rd Ed.
John Wiley, 2006. Call Number: TP155.75 .S58 2006.
2. K. Ogata. Modern Control Engineering, 5th Ed.; Prentice Hall, 2010. Call Number: TJ213 .O32
2010.
Disediakan oleh (Prepared by):
Tandatangan (Signature):
Nama (Name): Dr Hisyam Bin Abdul Rahman
Jawatan (Post): Pensyarah
Tarikh (Date): Ogos 2019
Disemak oleh (Checked by) :
Tandatangan (Signature):
Nama (Name): PM Dr. Wan Nurshazwani Wan
Zakaria
Jawatan (Post): Head of Department
Tarikh (Date): Ogos 2018
FKEE, SEM1 Session 2019/20
Grading Rubric for Written Report
Criteria Scale
5 4 3 2 1
Lab activities Varies, depending on activity assigned
Conclusion Accurate statement of
the results of lab
indicates whether
results support
hypothesis. Possible
sources of error and
what was learned from
the lab is discussed.
Accurate statement of
the results of the lab
indicates whether
results support the
hypothesis. Possible
sources of error
identified.
A statement of the
results of the lab
indicates whether
results support the
hypothesis
A statement of the
results in incomplete
with little reflection
on the lab
No conclusion was
included or shows
little effort and
reflection on the lab
Demonstration Demonstration with
clear understanding of
principle or concept
involved; accurately
relates concept to
demonstration
Exhibits limited
understanding or
principle
demonstrated; minor
inaccuracies in
relating
demonstration.
Demonstration
without understanding
the principle; cannot
relate concept to
demonstration
Ethics - Self generated
solution ideas.
- Student dress
properly according
to laboratory
regulations.
- Solution ideas are
adopted from
others.
- Student dress
properly according
to laboratory
regulations.
- Copied ideas
solution from others.
- Student do not dress
properly according
to laboratory
regulations