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The Control System Research of Bldcm Based on DSP

Author: YiChunXi
Tutor: LuoHuiQian
School: Wuhan University of Technology
Course: Control Theory and Control Engineering
Keywords: Brushless DC motor (BLDCM) DSP Intelligent Power Module EMF to Pulse Width Modulation
CLC: TM33
Type: Master's thesis
Year: 2006
Downloads: 787
Quote: 7
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Abstract


Permanent magnet brushless DC motor (BLDCM) is a new motor with the motor control technology, power electronics, microelectronics technology development and the emergence of new permanent magnetic materials. It is developed based on brush DC motor, brushless DC motor only has the AC motor, simple structure, reliable operation, easy maintenance, and have high operating efficiency of the DC motor, no excitation loss speed performance, and many other features, and therefore become a hot topic. On the basis of permanent magnet brushless DC motor control system, sensor based EMF to permanent magnet brushless DC motor control system. Permanent magnet brushless DC motor control system is a new type of speed control system. The system has a good run, control and economic performance, showing great potential for development. Brushless DC motor (BLDCM) control objects, applications DSP for microprocessor brushless DC motor control system hardware and software design. The motor control system of the brushless DC motor control system having the characteristics of the digitized. Through a combination of the digital signal processor and associated analog circuitry, the digitizing process to the motor control. The system hardware design using TMS320LF2407A processor, intelligent power module (IPM) full-bridge circuit inverter as the main switching devices, light lotus and its driver. Current, voltage signal and back EMF detection circuit, while the design of the necessary protection circuit protection circuit (including overcurrent protection, overvoltage protection, IPM module failure). The hardware design of the entire system to take a lot EMC measures used to control and drive circuits in two PCB board design, and enhance the reliability of the system. System software design is mainly based on the basic idea of ??the EMF method, the entire control system software design. The system software includes initialization module and no sensor run module sensorless run module completed motor starters and two functions sensorless closed-loop control. Sensor closed loop control module includes a change to the regulation, the current loop regulator and adjust the speed loop, forward and reverse speed control function. The entire control system software with the main program, the service routine and interrupt subroutine composition. The main program completed chip initialization, variable initialization. Service routine to complete A / D converter, keyboard scanning, digital PI control software commutation, PWM generation. The system software design, reasonable structure, occupy less system resources. Finally, the experimental results generated by the PWM.

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CLC: > Industrial Technology > Electrotechnical > Motor > DC motor
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