APPLICATION ON HOTPRESS MACHINE USING PID FUNCTION
By
Widianto Stevanus 2-1752-042
MASTER’S DEGREE in
MECHANICAL ENGINEERING – MECHATRONICS concentration FACULTY OF ENGINEERING AND INFORMATION TECHNOLOGY
SWISS GERMAN UNIVERSITY The Prominence Tower
Jalan Jalur Sutera Barat No. 15, Alam Sutera Tangerang, Banten 15143 - Indonesia
January 2019
Revision after Thesis Defence on 31 January 2019
Widianto Stevanus STATEMENT BY THE AUTHOR
I hereby declare that this submission is my own work and to the best of my knowledge, it contains no material previously published or written by another person, nor material which to a substantial extent has been accepted for the award of any other degree or diploma at any educational institution, except where due acknowledgement is made in the thesis.
Widianto Stevanus
_____________________________________________
Student Date
Approved by:
Dr. Ir. Hanny J. Berchmans. M.T., M.Sc.
_____________________________________________
Thesis Advisor Date
Dr. Maulahikmah, S.Kom., M.Sc.
_____________________________________________
Dean Date
Revision after Thesis Defence on 31 January 2019
Widianto Stevanus ABSTRACT
PRESSURE PATTERN IMPROVEMENT OF PROPORTIONAL VALVE APPLICATION ON HOTPRESS MACHINE USING PID FUNCTION
By
Widianto Stevanus
Dr. Ir. Hanny J. Berchmans. M.T., M.Sc., Advisor Aulia Arif Iskandar, S.T., M.T., Co-Advisor
SWISS GERMAN UNIVERSITY
The purpose of this study is to develop a control scheme for the hydraulic proportional system using PID function on Mitsubishi PLC Q series which can rapidly control the pressure in a hydraulic cylinder with very short stroke. The mathematical model of the control system is established according to the principle of the electro- hydraulic system. Considering the above mentioned characteristics, simulation of the system modelling will be established to know the system response. In order to improve the control precision of the hydraulic hot-press system, the Mitsubishi PID controller are designed by selecting appropriate tuning parameters. Their control performances are analyzed in time domain respectively. The variation of PID controller configuration will be conduct to know the better model for this system controller. The validity of the proposed control scheme is confirmed through the experiments to verify the rationality of the theoretical model. The results show that the Mitsubishi PID and the ideal PID give the same result for the tuning parameter resulted from simulation. And also the experiment give the better stability in the 3 different pressure set value that conduct by author.
Keywords: Pressure Control, electro-hydraulic system, Proportional relief Valve
Widianto Stevanus
© Copyright 2019 by Widianto Stevanus
All rights reserved
Widianto Stevanus DEDICATION
I would like to dedicate this thesis to my wife Stefani. Without her support none of this would have been possible. She has my eternal love, gratitude and admiration.
Also for Akebono Brake Astra Indonesia P.T. for the financial support
Widianto Stevanus ACKNOWLEDGEMENTS
I wish to thank the members of my committee for their support, patience and good humor. Their gentle but firm direction has been most appreciated. I would like to acknowledge the invaluable contributions, both technical and financial, of my supervisors, Dr. Ir. Hanny J. Berchmans. M.T., M.Sc and Aulia Arif Iskandar, S.T., M.T., The technical assistance of Mr. Robert Jordan is also gratefully acknowledged.
I would also like to acknowledge the financial contributions made by Akebono Brake Astra Indonesia P.T. The love and support of my parents, my wife Stefani and my children was a vital component in the completion of this thesis. So too was the advice and friendship of all who passed through MME batch 6. A short message to you all:
Thanks
Widianto Stevanus TABLE OF CONTENTS
STATEMENT BY THE AUTHOR ... 2
ABSTRACT ... 3
DEDICATION ... 5
ACKNOWLEDGEMENTS ... 6
TABLE OF CONTENTS ... 7
LIST OF FIGURE... 8
LIST OF TABLE ... 10
CHAPTER 1 – INTRODUCTION ... 11
1.1 Background... 11
1.2 Objectives ... 12
1.3 Hypothesis ... 12
1.4 Limitation ... 13
1.5 Outline ... 13
CHAPTER 2 - LITERATURE REVIEW ... 14
2.1 Hydraulic Power Source ... 14
2.2 Hydraulic Actuators... 18
2.3 Control Elements ... 20
2.4 PID Controller ... 25
2.5 Mitsubishi PID Function ... 27
CHAPTER 3 – MODELING AND SIMULATION ... 29
3.1 System Description ... 29
3.2 System Modelling ... 33
3.3 Control System Design ... 35
CHAPTER 4 – RESULTS AND DISCUSSIONS... 39
CHAPTER 5 – CONCLUSIONS AND RECCOMENDATIONS ... 51
5.1 Conclusions ... 51
5.2 Recommendations ... 51
GLOSSARY ... 52
REFERENCE ... 56
