基于DSP的交流永磁同步电机伺服系统的研究

发布时间：2018-03-16 14:40

本文选题：永磁同步电机　切入点：伺服系统　出处：《兰州理工大学》2007年硕士论文　论文类型：学位论文

【摘要】： 伺服系统是电机制造技术、检测技术、电力电子技术、微处理器技术和现代控制技术相结合的产物。永磁同步电机具有高效、高转矩电流比和低惯量等优点，在高性能微处理器芯片和先进控制理论的支持下能获得良好的控制性能。因此，永磁同步电机在伺服控制领域得到了广泛的应用。本课题以当前最先进的数字信号处理器芯片TMS320F2812为核心控制单元，尝试设计一永磁同步电机伺服系统，并对其中的一些关键环节进行了理论研究和实践探索。首先，本文结合文献资料，全面阐述和总结了当前交流电机伺服系统涉及的关键技术和发展现状，进而对交流永磁同步伺服系统的控制技术进行了简要的介绍，提出了本文的研究内容和工作安排。其次，总结了永磁同步电机的工作和控制原理，，阐述了矢量控制原理，针对普通控制方法调速范围不宽的特点，提出了基于最小端电压比的弱磁控制方法；并结合空间矢量脉宽调制，提出了永磁同步伺服系统的控制方案。再次，采用TMS320F2812作为核心控制器来尝试设计开发一个基于DSP的电机伺服平台，采用SVPWM空间矢量脉宽调制技术实现磁场定向矢量控制。其中主电路是一个典型的两点式三相交一直一交电压源型逆变电路，采用智能功率模块(IPM)作为逆变器的主开关器件。并同时对控制系统的硬件和软件部分的设计进行了研究。最后，对上述系统进行了仿真研究，进一步验证和深化了上述所取得的一些理论结果。
[Abstract]:Servo system is the result of the combination of motor manufacturing technology, detection technology, power electronics technology, microprocessor technology and modern control technology. PMSM has the advantages of high efficiency, high torque / current ratio and low inertia, etc. With the support of high performance microprocessor chip and advanced control theory, permanent magnet synchronous motor (PMSM) is widely used in servo control field. Taking the most advanced digital signal processor chip TMS320F2812 as the core control unit, this paper attempts to design a permanent magnet synchronous motor servo system, and makes theoretical research and practical exploration on some key links. First of all, combined with the literature, this paper comprehensively describes and summarizes the current AC motor servo system involved in the key technologies and development status, and then the AC permanent magnet synchronous servo system control technology is briefly introduced. The research content and working arrangement of this paper are put forward. Secondly, the work and control principle of PMSM are summarized, the principle of vector control is expounded, and the weak magnetic field control method based on the minimum terminal voltage ratio is put forward in view of the characteristic that the speed range of the common control method is not wide. Combined with space vector pulse width modulation, the control scheme of permanent magnet synchronous servo system is proposed. Thirdly, using TMS320F2812 as the core controller to try to design and develop a motor servo platform based on DSP. The SVPWM space vector pulse width modulation technique is used to realize the field-oriented vector control, in which the main circuit is a typical two-point three-phase intersecting one alternating voltage source inverter. The intelligent power module (IPM) is used as the main switching device of the inverter, and the design of the hardware and software of the control system is also studied. Finally, the simulation of the system is carried out to further verify and deepen some theoretical results obtained above.
【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2007
【分类号】：TM341

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