无位置传感器无刷电机调速系统设计【毕业论文】.doc

- PAGE I - 本科毕业设计 （20 届） 无位置传感器无刷电机调速系统设计 所在学院 专业班级 电气工程及其自动化 学生姓名 学号 指导教师 职称 完成日期 年 月 PAGE III 摘　要 【摘要】无位置传感器无刷直流电机不但具有传统无刷直流电机良好的调速性能，并且效率高、体积小具有更好可靠性和环境适应性，因此在工业领域中广泛应用。 本系统设计的基于C8051F330单片机控制的无位置传感器无刷电机调速系统能对无位置传感器无刷电机启动、调速、保护等控制。 本论文首先介绍了无刷电机控制原理。然后对无位置传感器无刷直流电机控制中的关键技术问题——转子位置检测方法、起动控制策略、反电势过零点滤波等进行探讨，并详细介绍了以C8051F330单片机为控制器的软、硬件实现方法和设计过程中出现的问题的分析。 【关键词】无位置传感器；直流无刷电机；单片机。 Abstract 【ABSTRACT】Brushless DC motor is widely applied to all kinds of fields owe to its strong ability of speed regulation, high efficiency and small size. On the other hand, Sensorless brushless DC motor BLDCM is more popular in industrial fields as it is more reliable and adaptable. This design accomplishes a Sensorless brushless DC motor control system based on C8051f330, which conducts the control of the brushless motor’s startup, speed regulation, stop and protecting. This design accomplishes a speed regulation system of Sensorless brushless DC motor controlled by the single chip microcomputer C8051F330. Meanwhile, the paper starts with the controlling principles of brushless motor and then discusses some pivotal techniques problems of Sensorless brushless DC motor control, such as detection methods of rotor position, starting control strategies and back-EMF crossing zero point filtering. Besides, both software and hardware controlled by the single chip microcomputer C8051F330 are introduced in detail as well as their working procedures. 【KEYWORDS】Sensorless；Brushless DC motor；Single-chip Microcomputer。 目　录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc293499941 摘　要 PAGEREF _Toc293499941 \h III HYPERLINK \l _Toc293499942 目　录 PAGEREF _Toc293499942 \h V HYPERLINK \l _Toc293499943 1 绪论 PAGEREF _Toc293499943 \h 1 HYPERLINK \l _Toc293499944 1.1 无刷直流电机的研究背景和发展现状 PAGEREF _Toc293499944 \h 1 HYPERLINK \l _Toc293499945 1.1.1 无刷直流电机的发展背景 PAGEREF _Toc293499945 \h 1 HYPERLINK \l _T