| 研究生: |
張尚文 Chang, Shang-Wen |
|---|---|
| 論文名稱: |
隨機脈波寬調變技術在微步進馬達控制之研究 Study of Random Frequency Pulse Width Modulation in Microstepping Motor Control |
| 指導教授: |
莊智清
Juang, Jyh-Ching |
| 學位類別: |
碩士 Master |
| 系所名稱: |
電機資訊學院 - 電機工程學系 Department of Electrical Engineering |
| 論文出版年: | 2002 |
| 畢業學年度: | 90 |
| 語文別: | 中文 |
| 論文頁數: | 68 |
| 中文關鍵詞: | 隨機脈波寬調變 、微步進馬達 |
| 外文關鍵詞: | RFPWM, microstepping motor |
| 相關次數: | 點閱:93 下載:16 |
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近年來,許多電子產品如光碟燒錄機或彩色繪圖機等均要求有精細的位置控制。傳統直流馬達已不能符合產品的要求,步進馬達則由於具有固定角度移動量及靜止力矩的特性受到重視。但步進馬達所移動的角度量仍嫌太大,為了要達到更精細的定位,必須將原先移動的角度量再做細步切割。雖然市面上已有專屬微步進驅動器的晶片,但本篇論文以數位訊號處理方式來設計步進馬達微步進驅動器,並且與市面上的微步進驅動器之間的差異做比較。微步進驅動設計可採用弦式脈波寬調變方式,但此舉會產生固定的頻率階波成份,進而造成步進馬達噪音的增加,機械性振動,溫度上升等不良的影響。本篇論文提出隨機脈波寬調變的方式藉以降低上述的干擾現象。並藉由模擬的方式驗證隨機脈波寬波調變於微步進控制的可行性。
In recent years, many high technology products such as CD-RW or full-color graph plotter are in need of accurate position control. The stepping motors, due to their constant degree increment and static torque, have become attractive. However, stepping motors are subject to large step angle in position control. To achieve fine positioning, microstepping techniques can be used. The thesis develops a DSP-based microstepping technique. Furthermore, to reduce acoustic noise and mechanical vibration, random frequency pulse width modulation (RFPWM) is proposed. It is shown, through simulation, that the proposed RFPWM microstepping control method can achieve fine positioning and reduced harmonic distortion.
參考文獻
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