Current Based Anti-Pinch System for Automotive Power Window System
- Alternative Title
- 전류 정보 기반의 자동차 파워윈도우용 앤티핀치 시스템
- Abstract
- Recently in automotive mobile technology, good safety performance is taking the most important issue to develop any kind of automotive technology. One of automotive technology that needs good safety system is the automotive power window system. Anti-pinch system is a safety system on the power window that has a function to prevent fatal accidents caused by object stuck or pinch in the window area. In this report, contact method anti-pinch system based on current information had been developed to satisfy FMVSS 118 regulations. Current information in this anti-pinch system is detected by using current sensor and utilized the information to decide the pinch condition. By utilizing the current information, the pinch condition can be reflected very quickly. On the other hand, current information has critical demerit such as weak at get affected by disturbances that can make noises. And also, changing of load disturbance because of the window frame friction can easily change the current information. Those of things can make the anti-pinch system performance bad.
In this study, open loop and closed loop anti-pinch system are proposed by utilizing the current information. In the open loop system, the current is directly processed to detect the pinch condition. In the closed loop system, the current is controlled to stabilize its behavior. Controlling the current information by using the PID control method has been developed to overcome current disadvantages caused by disturbance. Manual and automatic thresholds are applied on both systems as the pinch decider. The automatic threshold method in this study was suggested as a new threshold method for the anti-pinch system. Through some experiments and tests, squeezing force value validity of the proposed anti-pinch system was verified to satisfy the FMVSS 118 regulations.
- Issued Date
- 2012
- Awarded Date
- 2012. 2
- Type
- Dissertation
- Publisher
- Department of Mechatronics Engineering, Pukyong National University
- Affiliation
- Pukyong National University
- Department
- 대학원 메카트로닉스공학협동과정
- Advisor
- Seok-Kwon Jeong
- Table Of Contents
- Abstract i
Contents ii
List of Figures iv
List of Tables viii
Nomenclatures x
Chapter 1 : Introduction 1
1.1 Background 1
1.2 Review of the previous studies 4
1.3 Objective of the study 6
1.4 Benefit of the study 7
1.5 Outline of the present study 8
Chapter 2 : Study of Theory 9
2.1 Automotive power window 9
2.2 Anti-pinch system definition and type 11
2.3 Regulation for anti-pinch system application 13
2.4 DC motor modeling 15
2.5 DC chopper as a motor driver 21
Chapter 3 : Experimental Apparatus, Design, and Method 28
3.1 Experimental apparatus 28
3.1.1 Power window apparatus 28
3.1.2 PWM DC chopper 30
3.1.3 Load cell and test spring 38
3.1.4 Current sensor 40
3.1.5 Position sensor 41
3.1.6 LabVIEW USB-6216 43
3.2 System design 44
3.2.1 Automotive power window system modeling 44
3.2.2 Open loop current based anti-pinch system 48
3.2.2.1 Open loop system design 48
3.2.2.2 Threshold decision method design 48
3.2.2.3 Open loop circuit design 55
3.2.3 Closed loop current based anti-pinch system 56
3.2.3.1 Closed loop system design 56
3.2.3.2 Threshold decision method design 60
3.2.3.3 Closed loop circuit design 67
3.3 Software design 68
3.4 Experimental method 69
Chapter 4 : Experimental Result and Analysis 74
4.1 Open loop current based anti-pinch system 74
4.1.1 Manual threshold performance 75
4.1.2 Automatic threshold performance 77
4.2 Closed loop current based anti-pinch system 80
4.2.1 Manual threshold performance 80
4.2.2 Automatic threshold performance 82
4.3 Performance of the current based anti-pinch system 85
Chapter 5 : Conclusion 94
Reference 96
Acknowledgement 98
Appendix 99
- Degree
- Master
- Appears in Collections:
- 대학원 > 메카트로닉스공학협동과정
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