基于SVPWM无刷直流电动机控制系统研究

发布时间：2018-06-01 01:38

本文选题：无刷直流电动机 + SVPWM　；参考：《华东交通大学》2017年硕士论文

【摘要】：无刷直流电动机(Brushless DC Motor,以下简称BLDCM)以其自身结构简单、调速范围广、扭矩大、噪声低、可靠性性能优良等特点广泛应用于现代工业自动化、航空航天等领域,无刷直流电动机控制系统稳、准、快特性成为广大科研工作者不懈追求的目标。本文首先结合国内外关于研究无刷直流电动机文献资料,介绍无刷直流电动机发展历程及研究现状;从研究对象自身机械结构、运动原理方面入手,采用SVPWM控制方式建立无刷直流电动机控制系统。在以上理论的基础上,搭建无刷直流电动机实验平台。实验平台主要分为电机控制电路和驱动电路,选用ARM COTEX-M3系列芯片作为控制系统主控芯片,驱动电路采用N+N结构选用F540NS型号MOSFET,以IR2101作为MOSFET驱动芯片。本文研究重点在于采用正弦波SVPWM控制方式,以“三电阻采样法”配合霍尔传感器实现控制系统PID电流环与速度环双闭环。研究中结合电动机本体在运动过程中参数非线性变化,控制算法根据被控对象参数变化实时调整PID参数,从而实现无刷直流电动机稳定、快速、准确的控制。最后通过实验平台测试,验证了本论文设计无刷直流电动机控制系统方案科学合理,电机控制能达到稳定、快速、准确的控制性能指标,实现了预期设计要求。
[Abstract]:Brushless DC Motor (BLDCM) is widely used in modern industrial automation, aerospace and other fields because of its simple structure, wide speed range, large torque, low noise and excellent reliability. Brushless DC motor control system stability, accuracy, fast characteristics of scientific research workers unremitting pursuit of the goal. This paper firstly introduces the development course and research status of brushless DC motor, starting with the mechanical structure and motion principle of the research object, based on the domestic and foreign literature about the research of brushless DC motor, and introduces the development of brushless DC motor and its current research status. The brushless DC motor control system is established by using SVPWM control mode. Based on the above theory, the experimental platform of brushless DC motor is built. The experimental platform is mainly divided into motor control circuit and drive circuit. ARM COTEX-M3 series chips are selected as the main control chip of the control system. The driving circuit adopts N N structure to select F540NS model MOSFET and IR2101 as MOSFET driver chip. The emphasis of this paper is to adopt the sine wave SVPWM control method and to realize the double closed loop of the PID current loop and the velocity loop of the control system by using the "three resistance sampling method" and the Hall sensor. In the study, the control algorithm adjusts the PID parameters in real time according to the parameters change of the controlled object, so that the brushless DC motor can be controlled stably, quickly and accurately. Finally, through the experiment platform test, it is proved that the design scheme of the brushless DC motor control system is scientific and reasonable, the motor control can achieve stable, fast and accurate control performance index, and achieve the expected design requirements.
【学位授予单位】：华东交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP273;TM33

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