LabVIEW圖控軟件于直流馬達風扇桿旋轉角度控制之研究
本文以LabVIEW 圖控軟件撰寫程序，搭配光學式增量型編碼器，探討其編碼器輸入指令之操作，并制作直流馬達風扇桿系統，設計驅動電路，利用增量型編碼器來量取風扇桿旋轉角度信號，實際完成一套直流馬達風扇桿角度控制系統。經由DAQ 資料擷取卡進行模擬輸出步階電壓，并量取風扇桿之旋轉角度，測出系統參數，并設計閉回路PID 控制器來控制直流馬達的電流，以達到控制馬達轉速的功能，進而控制風扇桿的旋轉角度，達成風扇桿旋轉角度控制。
關鍵詞：編碼器、直流馬達風扇桿。
Abstract
In this paper, we discuss the setting procedures for the encoder input by using LabVIEW graphical language.First, a DC motor propeller pendulum is developed to demonstrate the design of the driving circuit and the identification of the system transfer function, by using the optical incremental encoder to measure the signal of the rotation angle of the pendulum. Then, a program is implemented to achieve the PID control of the system.
The output control signal is generated to the motor driver circuit through the analog channel of DAQ card, and the motor speed can be controlled by changing the analog output voltage to control the rotation angle of the pendulum.
Keywords: encoder, dc mot or pr opeller pendul um.