智慧型CNC工具機進給軌跡精度改善系統

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姓名

蕭人賓(Ren-Bin Xiao) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

智慧型CNC工具機進給軌跡精度改善系統
(Intelligent system of improving contouring accuracy on CNC machine tools)

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摘要(中)

摘要
隨著工業的進展，製造業目前已處於時間與品質並重的時代，因此目前自動化製造設備一直朝向高速高精度的方向發展。而CNC工具機在循圓或做曲面加工時，為了減少其追蹤誤差，適當的摩擦力補償量是工具機高精度加工所必要的。摩擦包含了靜摩擦、庫倫摩擦和黏滯摩擦，其中靜摩擦屬於非線性函數。當CNC工具機在加工時，當其中一軸的速度正好通過零點時，因靜摩擦力帶來的暫態現象影響，使得加工精度變差。
由於目前工具機的加工曲線是在伺服馬達的位置命令下。因此，為了解決這個暫態現象問題，必需預先在軸要換象的時候補償一個值，讓這系統所產生的力矩能迅速克服靜摩擦力並到達穩態，使之加工出來的成品能維持一定的高精度。然而，由於是在位置命令下一個補償值且靜摩擦力會隨著不同的加工表面而不同，使得補償值也會隨著不同的機台而改變。要每個機台及每次加工材料的改變時都要重新人工重覆測試出適當的補償量值，是相當費時且麻煩的。本篇論文主要的目的即為讓工具機能自動找出最適當的補償量值，節省人力和成本。並經由理論推導、模擬以及實際機台驗証其可行性。

摘要(英)

Abstract
As the development in industry, time and quality are more and more important. Therefore, automatic manufacturing machines are tending to high speed and high precision. In order to eliminate tracking error, appropriate compensation value of friction is necessary for manufacture of high precision when processing a circular profile or a curved surface on the CNC machine tools. Friction includes static friction, Coulomb friction and viscous friction. Static friction is nonlinear function, and it is one of the most significant sources of nonlinear disturbance for manufacturing. The transient response that is produced by static friction will deteriorate manufacturing precision because it makes the velocity profile non-smooth at zero crossing. The nonlinear component of friction such as static friction (stiction) should be overcome so that the tracking error will be eliminated. When the X-Y tables are tracking a circular profile, quadrant glitches appear at ninety degrees intervals, i.e. the motion of one axis has a zero velocity crossing and reverses direction.
The quadrant glitches due to friction brought about transient phenomenon. For solving the transient phenomenon, we will make the system to reach steady state quickly by anticipatively compensating a value when the motion of one axis has a zero velocity crossing and reverses direction. But the appropriate compensated value is difficult to get through trial and error. An algorithm is developed to find the compensated value automatically. Finally, theoretical study, simulation, and experiment are performed to verify the proposed algorithm.

關鍵字(中)

★ 摩擦力補償
★ 工具機

關鍵字(英)

★ cnc
★ friction compensation

論文目次

TABLE of CONTENTS
Abstract I
TABLE of CONTENTS II
LIST of FIGURE IV
LIST of TABLES VI
LIST of TABLES VI
Chapter 1 INTRODUCTION 1
1.1 BACKGROUND AND MOTIVATION 1
1.2 LITERATURE REVIEW 2
1.3 THESIS ARRANGEMENT 3
Chapter 2 INTRODUCTION to QUADRANT GLITCHES AND FRICTION 4
2.1 INTRODUCTION 4
2.2 LOW VELOCITY FRICTION 5
2.3 MODEL OF FRICTION [2] 6
Chapter 3 DESIGN a METHOD to FIND COMPENSATED VALUE 9
3.1 PRELIMINARY 9
3.2 THEORY ANALYSIS 9
3.3 COMPUTER MODELING OF THE OPENED LOOP SYSTEM 11
3.4 COMPUTER MODELING OF THE CLOSED LOOP SYSTEM 14
CHAPTER 4 INTRODUCTION to PC BASED CNC 19
4.1 INTRODUCTION TO PC BASED CNC CONFIGURATION 19
4.1.1 Motion Control Card (PCC1620) 20
4.2 EXPERIMENT FRAME 24
4.2.1 System Model 27
CHAPTER 5 EXPERIMENT RESULTS and DISCUSSION 30
5.1 CONFIGURATION OF EXPERIMENT 30
5.2 EXPERIMENTAL PROCEDURE 31
5.3 EXPERIMENT RESULTS 33
5.3.1 Fictional Phenomenon 33
5.3.2 Experimental Results 35
CHAPTER 6 CONCLUSION and FUTRUE WORK 44
6.1 Conclusions 44
6.2 Future work 44
REFERENCE 46

參考文獻

REFERENCE
[1] Armstrong-Helouvry, “Control of Machines with Friction,” Boston, MA: Kluwer, 1991.
[2] Armstrong-Helouvry, B., Dupont, P., and Canudas de Wit, C., “A Survey of Models, Analysis Tools and Compensation Methods for the Control of Machines with Friction,” Automatica, Vol. 30, No. 7, pp. 1083-1138, 1994.
[3] Poo, A., Bollinger, J. G., and Younkin, G. W., “Dynamic Errors in Type I Contouring Systems,” IEEE Trans. on Industry Automation, Vol. 1A-8, No. 4, pp.477-484, 1972.
[4] Lee, H. S., Tomizuka, M., “Robust Motion Controller Design for High-accuracy Positioning Systems,” IEEE Trans. Indus. Electron., Vol. 43, pp. 48-55, 1996.
[5] Canudas de Wit, C.; Olsson, H.; Åström, K.J.; Lischinsky, P., “A New Model for Control of Systems with Friction,” IEEE Trans. Autom. Control, Vol. 40, pp. 419-425, 1995
[6] 陳金聖, “利用雙球感良測發展數值工具機之誤差展段與補償技術,” 國立交通大學機械工程研究所碩士論文, 1993.
[7] 林恆毅, “線性馬達運動系統之摩擦力補償設計,” 國立交通大學機械工程研究所碩士論文, 2001.
[8] Weck, M. G., “Improving Corner Tracking Using the IKF Control Strategy,” Annals of CIRP 39/1/, pp.437-441, 1990.
[9] Tomizuka, M., “High –Speed End Mill Boring and Rounded Corner Cutting,” Procesdings of American Control Conference, June 1994.
[10] Tomizuka, M., “Zero Phase Error Tracking Algorithm for Digital Control,” ASME Journal of Dynamic Systems, Measurement, and Control, vol.109, pp.349-254, 1987.
[11] Tomizuka, M., Tung, E.D., Anwar, G., “Low Velocity Friction Compensation and Feedforward Solution Based on Repetitive Control,” Trans of ASME, Journal of Dynamic Systems, Measurement and Control, Vol.115, pp.279-284, June 1993.
[12] Dupont, P.E., “Avoiding Stick/Slip in Position and Force Control Through Feedback,” Proc.1991 Inter. Conf. on Robotic and Automation. IEEE, pp.1470-1476, 1991.
[13] Dupont, P.E., Dunlap, E.P., “Friction Modeling and Control in Boundary Lubrication,” Proc.1993 American Control Conf. pp.1910-1914.
[14] Ogata, K., Modern Control Engineering, Prentice Hall, 1997.
[15] 寶元科技, “PCC1620 運動控制軸卡繁體中文使用手冊,” 2001.
[16] Panasonic, “AC 伺服馬達驅動器MINAS-A 操作說明書,” 2001.
[17] 洪明諒, “CNC工具機高速進給軌跡精度改進研究”, 國立清華大學動力機械研究所碩士論文, 2000.
[18] 陳鳴吉, “交叉耦合控制在高速軌跡追蹤控制之設計與實作”, 國立中山大學機械工程研究所碩士論文, 2001.
[19] 彭鐿文, ”直接速度、加速度前饋控制器設計及PC Based CNC系統的實現”, 國立交通大學機械工程研究所碩士論文, 1993

指導教授

董必正(Pi-Cheng Tung)

審核日期

2004-7-14

推文