| 研究生: |
呂俊明 Lu, Jun-Ming |
|---|---|
| 論文名稱: |
球與輪系統之平衡控制 Ball and Wheel System Balance Control |
| 指導教授: |
何明字
Ho, Ming-Tzu |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 工程科學系 Department of Engineering Science |
| 論文出版年: | 2003 |
| 畢業學年度: | 91 |
| 語文別: | 中文 |
| 論文頁數: | 50 |
| 中文關鍵詞: | 圓準則 、Lur'e 系統 |
| 外文關鍵詞: | Lur'e system, circle criterion |
| 相關次數: | 點閱:51 下載:2 |
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球與輪系統為一個不穩定的非線性系統,其機械結構並不複雜,故適用於驗證各種控制理論。球與輪系統是由一個球在輪子上滾動所組成的,其中是利用角度感測器來做回授信號,而其控制的目的是控制直流馬達驅動輪子使球立在輪子上方達到平衡,本論文首先介紹如何建立此系統之機構,然後推導出系統之數學模型,再將球與輪控制系統轉化成一Lur’e系統,在控制器選定為PID後,利用圓準則(circle criterion )來判定系統的穩定性及PID參數的調設。最後將所得PID控制器利用類比電路來實現,並獲得與系統模擬相吻合的結果,達到球的平衡控制。
The ball and wheel system is an unstable nonlinear system. The mechanism of this system is not complicated. Because of this, this system provides a platform for verifying the effectiveness of different control schemes .This system is consist of a ball on the wheel. The feedback signal is provided by a photo sensor which detects the angle of the ball. The control objective is to control a DC motor to drive the wheel to keep the ball staying on the wheel. In this thesis , it is shown how to build up a ball and wheel system. Then the mathematical model of this system is derived. The resulting model is then converted into a Lur’e system. The PID controller is used to achieve the control objective. The circle criterion is then used for analyzing closed-loop stability and designing the controller. Finally, the PID controller is implemented through the analog circuits. It is shown that the simulation results validate the experimental results.
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