【作者】 钱莉；

【导师】 曲波；

【作者基本信息】 苏州大学 ， 信号与信息处理， 2011， 硕士

【摘要】 近年来,随着电力电子技术、微电子技术、新型电机控制理论和稀土永磁材料的快速发展,永磁同步电机(Permanent Magnet Synchronous Motor,PMSM)得到了迅速推广和应用。PMSM体积小、损耗低、效率高,在节约能源和环境保护日益受到重视的今天,对它的研究显得更为迫切。为了更好地实现对PMSM调速系统的控制,获取转子位置和速度信号变得至关重要。传统的PMSM都是通过在转子轴上安装位置传感器(如霍尔传感器)来获取这些信号的,但这样增加了系统成本,降低了系统的可靠性和耐用性。因此,如何在不安装位置传感器的情况下实现对PMSM调速系统的控制成为了研究重点。本文以无位置传感器PMSM及其控制系统为研究对象,研究并设计了基于滑模变结构控制方式的PMSM矢量控制调速系统。在分析PMSM工作原理与特性的基础上,构建了PMSM的数学模型。通过详细研究空间矢量脉宽调制(Space Vector Pulse Width Modulation,SVPWM)技术、波形的产生机制以及滑模变结构控制方法的特点,提出了一种将滑模变结构原理应用于无位置传感器PMSM矢量控制系统的设计方法。该方法可测量电机的电流、电压等物理量,通过滑模变结构估算转子位置,提取转子的位置和速度信息。本文介绍了STM32F103芯片的基本结构和性能,并给出了使用该芯片作为主控芯片的PMSM调速系统的软硬件设计。理论分析和仿真结果表明,该设计具有较强的鲁棒性和较高的控制精度。更多还原

【Abstract】 In recent years, with the rapid development of power electronic technology, microelectronics technology, new motor control theory and rare earth permanent magnetic materials, the permanent magnet synchronous motor (PMSM) has got rapid popularization and application. PMSM is of small size, low dissipation and high efficiency, as energy saving and environmental protection is valued today, the research to it appear more necessary. In order to realize the control of speed regulation system, it is very important to obtain the rotor positions and speed signals. The traditional PMSM installed position sensors (such as Hall sensors) on through the rotor shaft to obtain the rotor positions and speed signals, but these sensors increased the system cost, reduced the system reliability and durability. Therefore, how to realize the control of speed regulation system without installing position sensors became the focus.The research objects of this paper are position sensorless PMSM and its control system. The paper researches and designs the vector control system which is based on sliding mode variable structure control mode. On the analysis of the working principle and characteristics of PMSM, its mathematical model is constructed. Through detailed research of the technology and waveform generation mechanism of space vector pulse width modulation (SVPWM) and the characteristics of sliding mode variable structure control method, a design method is put forward which applies sliding mode variable structure principle in vector control system of position sensorless PMSM. This method can measure motor current, voltage, etc, use the sliding mode variable structure to estimate rotor position, extract position and velocity information of the rotor.This paper introduces the basic structure and performance of STM32F103 chip, and gives the software and hardware design of speed regulation system which use the chip as the main control chip. Theoretical analysis and simulation results show that the design has stronger robustness and high control precision.更多还原