Roll-to-roll tension controller design based on fuzzy logic for manufacturing printed electronics
- Abstract
- Roll-to-roll (R2R) system has been employed successfully in a variety of industries such as graphical printing, textiles, films, foils and many more converting industries. Printed electronics is a newly emerging technology that is said to revolutionize electronics industry by providing new cheaper alternatives to the conventional electronics. It is believed to be the future of disposable electronics, organic photovoltaic, organic light emitting diodes, RFID, E-paper, and many more yet unexplored potential of flexible electronics. Several of the above mentioned have been achieved on a laboratory scale, but very few have been commercialized successfully. This thesis attempts to explore the potential of R2R system to mass produce printed electronic components. The focus being on application of fuzzy logic to control the tension of the web on which printing takes place. Even with fuzzy logic several different approaches have been tried depending on the printing process. Especially worth noting is the absence of system model while designing the controllers. Rather the existing controllers are replaced with better fuzzy controllers, or are used to augment the existing controllers. Occasionally simple statistical tools have been employed to help develop the intuition that is the core of fuzzy logic. Based on the intuition and a thorough study of the printing process itself, control architectures have been developed for two printing processes, namely offset printing and slot die coating. Further a new model less approach has been used to prevent propagation of tension from one tension span to the next, which is a very commonly observed phenomenon in R2R systems. This will not just help printed electronics but will also be beneficial in disturbance prone converting industries.
- Issued Date
- 2012
- Awarded Date
- 2012. 8
- Type
- Dissertation
- Alternative Author(s)
- GaneshthangarajPonniah
- Affiliation
- 제주대학교
- Department
- 대학원 메카트로닉스공학과
- Advisor
- 최경현
- Table Of Contents
- Abstract x
1. Roll-to-roll system 1
1.1. Introduction to Roll-to-roll system 1
1.2. Importance of R2R system in printed electronics 2
2. Web tension control system 5
2.1. Hardware 5
2.1.1. Servo pack 5
2.1.2. Load cells 9
2.1.3. PXI system 11
2.1.4. Rollers and spindles 13
2.2. Slot die 15
2.3. Offset printing 17
2.4. EHD/ESD system 19
2.5. Literature survey 20
2.5.1. Tension control 21
2.5.2. Printing 26
2.6. Web tension controller based on fuzzy logic 35
2.6.1. Fuzzy logic-introduction 36
2.6.2. Input scaling 37
2.6.3. Fuzzification 37
2.6.4. Defuzzification 37
2.6.5. Output scaling 37
2.7. Tension control-dynamics 38
2.8. Tension control guidelines 38
3. Tension controller design and application 39
3.1. Offset printing 39
3.1.1. Introduction 39
3.1.2. Uniqueness and disturbances caused by offset printer 43
3.1.3. Servo-packs and other equipment 45
3.1.4. Control system design 46
3.2. Reduction of interaction between spans using fuzzy logic 56
3.2.1. Introduction 57
3.2.2. Methods and materials 61
3.2.3. Causes and consequences of disturbances 61
3.2.4. Control system design 62
3.3. Active dancer based closed loop tension control 73
3.3.1. Introduction 74
3.3.2. Methods and materials 76
3.3.3. Control system design 77
3.4. Slot die coating 86
3.4.1. Introduction 87
3.4.2. Materials and methods 89
3.4.3. Experiment design 92
3.4.4. Results and discussion 93
4. Fabrication of products on R2R system 96
4.1. Offset printed products 96
4.2. Slot die coating 100
5. Results and discussion 100
5.1. Offset printing 100
5.2. Reduction of interaction between spans using fuzzy logic 100
5.3. Active dancer based closed loop tension control 101
5.4. Slot die coating 101
6. Conclusions 103
6.1. Offset printing 103
6.2. Reduction of interaction between spans using fuzzy logic 104
6.3. Active dancer based closed loop tension control 104
6.4. Slot die coating 104
References 106
- Degree
- Doctor
- Publisher
- 제주대학교 대학원
- Citation
- 가네시탕가라지. (2012). Roll-to-roll tension controller design based on fuzzy logic for manufacturing printed electronics
- Appears in Collections:
- Faculty of Applied Energy System > Mechatronics Engineering
- 파일 목록
-
-
Download
Roll-to-roll tension controller design based on fuzzy logic for manufacturing printed electronics.pdf
기타 데이터 / 11.43 MB / Adobe PDF
-
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.