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)

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

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______________________________________________________________________________

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_____________________________________________________________________________

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