【作者】 陈志勇；

【导师】 程善美；

【作者基本信息】 华中科技大学 ， 控制理论与控制工程， 2006， 硕士

【摘要】 由于永磁同步电动机具有体积小、功率密度高、效率和功率因数高等明显特点,得到从事电机及其驱动系统研究的相关人员的广泛重视,并在进二十年内得到了长足的发展。可以预见,随着永磁材料价格和电动机制造成本的降低,电力电子器件及高速微处理器的进入,控制系统理论的不断完善和提高,永磁同步电动机及其控制系统将会得到进一步的发展和应用,在某些场合将逐步取代现有的普通电励磁电机及其驱动系统。本论文在研究永磁同步电动机运行原理的基础上,详细讨论了磁场定向矢量控制理论,并且设计了一套基于DSP的全数字永磁同步电动机伺服控制系统。首先从永磁同步电动机的本身出发,讨论了其稳态运行原理,分析了永磁同步电动机的转矩特性、功率特性及效率。其次,深入研究了永磁同步电动机的矢量控制理论,建立了PMSM数学模型,并在此基础上讨论了PMSM的矢量控制方案,给出了系统控制框图。此外,本论文还对控制电压矢量调制(SVPWM)方法做了详细的理论阐述,并给出了软件实现方法。最后,介绍了控制系统软、硬件结构和主要功能模块的原理及其实现方法。硬件方面主要论述了控制电路各部分及外部辅助电路的设计和调试。在硬件的基础上,软件采用C语言编程,实现了位置、速度和电流三闭环矢量控制。更多还原

【Abstract】 Permanent Magnet Synchronous Machine(PMSM) has been paid more attention in the past two decades by researcher in the motor and control system fields because of its excellent performance for example small cubage, great power density and good efficiency. We can foresee the further development about PMSM and its control system with the reduce of the permanent magnet material`s price and producing the rotor, progress in the power electronics apparatus and high-speed processor and control theories. PMSM may take the place of common power excitation motor and control system in many fields.Based on the research of operation theory of the PMSM, the details of the field-orientation vector control theory are presented in this paper. Then a full-digital PMSM servo system is developed based on DSP. Firstly, this paper originates from the motor itself, discusses the steady operation theory of PMSM. The characteristics of the torque, power and efficiency are analyzed as well. Secondly, the vector control theory of PMSM is introduced deeply. The mathematical models of PMSM are illustrated. Continuously, the scheme of vector control on PMSM is discussed and the block diagram of this system is provided systematically. Additionally, SVPWM modulation is discussed thoroughly and its realization method with software is developed. Finally, the main structures of the software and hardware parts of the control system are introduced. Principles and realization of the main functional blocks of these two parts are illuminated. On the hardware of the system, parts of control circuit and the design and debugging of peripheral circuits are discussed thoroughly. Based on the hardware circuit, the software is programmed with C language. Three close loop vector control with feedback of position, speed and current are realized.更多还原