研究生: |
陳融生 Jung-Sheng Chen |
---|---|
論文名稱: |
無量測器直流無刷馬達控制系統設計與製作 Design and Implementation of a Sensorless DC Brushless Motor Control System |
指導教授: |
劉昌煥
Chang-Huan Liu |
口試委員: |
胡龍融
none 劉添華 Tian-Hua Liu |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電機工程系 Department of Electrical Engineering |
論文出版年: | 2005 |
畢業學年度: | 93 |
語文別: | 中文 |
論文頁數: | 120 |
中文關鍵詞: | 可程式編輯閘陣列. 、數位訊號處理器 、無量測器控制 、直流無刷馬達 |
外文關鍵詞: | sensorless control, DSP, FPGA., DC brushless motor |
相關次數: | 點閱:323 下載:21 |
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直流無刷馬達具有高轉矩、高功率密度等特性,經適當電子式換向,可使其具有如直流馬達之高性能運轉特性,在伺服系統的應用上已成為主流。一般直流無刷馬達運轉時,必須使用霍耳元件感測器及其對應之邏輯電路驅動馬達。若能夠不需使用量測器來達到相同的驅動目的,會更加符合經濟效益,故有無量測器控制(sensorless control)方法的提出。
本論文針對永磁式直流無刷馬達,以德州儀器公司之TMS320F2407A數位訊號處理器(DSP)晶片為控制核心,其系統週邊以FPGA為系統週邊處理訊號,發展出一DSP-FPGA混合式的控制系統。在未使用電流量測器及A/D轉換器條件下,本論文所提出的控制方法是僅用到三個電阻量測馬達的端電壓,配合適當的切換PWM技術與邏輯訊號判別,可直接從馬達端電壓中偵測出反電動勢零交越點資訊,以得知轉子動態位置做正確的換相工作,並且估算出轉子速度作閉迴路速度控制。最後本論文配合MATLAB與SIMULINK進行模擬與設計,分析與比較實驗結果,驗證本論文所提方法可行。
A DC brushless motor has the characteristics of high torque and high power density. With proper electronic commutation, it can achieve comparable performance of a dc motor and has become a dominant drive in servo application. Common application of dc brushless motor uses hall sensors and the associated logic circuits to drive the motor. This thesis proposes a method of sensorless control which can achieve comparable driving performance without using hall sensors and, thus, increases economic benefit.
Aiming at dc brushless motor control, this thesis uses the TI TMS320F2407A DSP as the control kernel and an FPGA for system interfacing and signal processing for developing a DSP-FPGA hybrid control system. Without using any current sensor and A/D converter, the thesis proposes the use of only three resistors to measure the motor terminal voltages. With proper pulse-width modulation (PWM) switching and logic signal decision, the zero-crossing information of the back electromagnetic (BEMF) signals can be detected and is used to estimate the rotor speed which is used in closed-loop speed control.
Lastly, this thesis conducts experiments and the experiment results are compared with the MATLAB-Simulink simulation results. The effectiveness of the proposed method is verified.
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