| 研究生: |
呂孜亭 Lu, Tzu-ting |
|---|---|
| 論文名稱: |
超音波馬達驅動平台定位及力量控制之研究 A Study on Position and Force Control of the Ultrasonic Motor Driven Table |
| 指導教授: |
施明璋
Shih, Ming-Chang |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 機械工程學系 Department of Mechanical Engineering |
| 論文出版年: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 86 |
| 中文關鍵詞: | 超音波馬達 、自調式模糊控制器 |
| 外文關鍵詞: | Self-Tuning Fuzzy Controller, Ultrasonic Motor |
| 相關次數: | 點閱:81 下載:7 |
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本文使用超音波馬達作為致動器,驅動滾珠螺桿平台做定位及力量控制(非同時控制)。定位控制部分,利用氣壓缸及比例壓力閥模擬負載力,探討在不同負載情況下定位的效果。本文使用雙模自調式模糊控制器來完成,針對超音波馬達轉速的低重現性以及死區飄移現象,提出以脈寬調變(PWM)的方式驅動馬達來加以改善,並以模糊推論的方式補償死區飄移現象,提高定位的精度及重現性。力量控制部分,由於超音波馬達具有斷電保持轉矩的特性,使得超音波馬達驅動系統的力量控制類似於定位控制,因此,本文在與定位控制相同之架構下,修正一些控制器參數,完成系統的力量控制。
The subject of this thesis is to develop a platform control system using rotary ultrasonic motor. This thesis can be separated into two parts: one is position control, the other is force control. In position control system, a pneumatic cylinder and a pneumatic proportional valve are used to simulate loading. The hybrid self-tuning fuzzy controller is proposed in this thesis. Because of the speed of ultrasonic motor has phenomenon of low reconstruction and uncertain dead-zone, pulse width modulation method is proposed in order to improve the phenomenon. Finally, fuzzy dead-zone compensator is used to compensate the uncertain dead-zone phenomenon in order to achieve more precision position control. In force control system, Because of the ultrasonic motor has a characteristic of high turnoff brake torque, force control of ultrasonic motor driven system is very similar to position control in many situation. Therefore, the force controller of ultrasonic motor driven system uses the same construction with position controller in this thesis, and altering some parameter to achieve force control.
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