Implementation of Position control of a Linear Brushless DC Motor Drive System

• Main Authors: Ming-hui Chen, 陳銘輝
• Other Authors: Tsung-Ming Yang
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/356zbk

碩士 === 國立臺灣科技大學 === 電機工程系 === 94 === The purpose of this thesis is to build a position control system of a linear motor driver. The front stage employs a single-phase full-bridge boost type AC/DC converter, which provides the inverter stage with variable DC voltage. Then, a linear brushless DC motor is driven by the inverter to accomplish the motion control. The AC/DC converter conducts switching-mode operations, so that the low-distortion/high- power-factor line current is obtained. Moreover, this converter provides bidirectional capability when the dc link voltage needs to reduce or the motor decelerates. The motion controller consists of current, velocity, and position loop with parameters determined through root-locus method. For evaluating performance, the mathematical model of the proposed system has been established and simulated by Matlab/Simulink. Finally, a digital signal processor, TMS320LF2407A, is used to implement the controller of motion system. This controller supplies pulse-width modulation signals to the switches of the two power stages, and handles the motion command and feedback (position) signal. Both the simulation and experimental results are obtained to show the validity of the proposed system.