无位置传感器无刷直流电机控制方法研究分析报告.doc
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J I A N G S U U N I V E R S I T Y
本 科 毕 业 论 文
无位置传感器无刷直流电机控制方法研究
RESEARCH ON CONTROL METHODS OF SENSORLESS
BRUSHLESS DC MOTOR
学院名称: 电气信息工程学院
专业班级: 电气1001
学生姓名: XXX
学生学号: 3100501xxx
指导教师姓名: XXX
指导教师职称: 副 教 授
2014 年 06月
无位置传感器无刷直流电机控制方法研究
专业班级:电气1001 学生姓名:
指导教师: 职 称:副教授
摘要
直流电机以其较大的启动转矩和堵转转矩以及宽范围高精度的调速性DSP控制技术的发展以及高性能永磁材料的出现,无刷直流电机以其优越的性能逐步取代有刷直流电机应用于各种场合。其中,无位置传感器无刷直流电机克服了有位置传感器无刷直流电机的缺陷,拥有可靠的工作性能、体积、成本等方面的优势。
针对无位置传感器无刷直流电机,本论文主要做了如下工作:
本文详细介绍了无刷直流电机的本体结构和工作原理,深入分析了无刷直流电机的数学模型,并对电机的运行特性做出了一些简要分析。本文采用三步法(TMS320F2812芯片为核心设计控制系统的硬件电路,采取模块化的设计思路,以子程序模块实现无位置传感器无刷直流电机从转子初始定位到“反电势”法过零检测运行。
最后,基于Matlab R2010b的SIMULINK模块,采取模块化的设计思路对电机进行建模仿真。并采用双闭环控制方法,对所建电机模型进行仿真,通过仿真实验验证“反电势”过零检测法的可行性。
关键词:无刷直流电机,无位置传感器,DSP,反电势过零,SIMULINK
RESEARCH ON CONTROL METHODS OF SENSORLESS
BRUSHLESS DC MOTOR
Abstract
DC motor with its large starting torque and locked rotor torque and wide speed range and high precision performance is widely used in various servo system and driving device. However, the existence of the brush and commutator makes DC motor structure become complicated, in addition, the sliding mechanical contact between them at the commutation time has seriously affected the operating reliability and stability of motor and reduced the accuracy of motor speed; Meanwhile, the spark generated when the motor is running easily cause electromagnetic interference and shorten the service life of the motor, which greatly limits its scope of application. Therefore, the research of DC motor without brush and commutator device has has be implemented by people for a long time.
With the development of power electronics technology and DSP control technology and the emergence of high-performance permanent magnet materials, Brushless DC motor gradually take the place of DC motor with its superior performance, used in various occasions. Among them, the
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