基于FPGA永磁同步电机控制的数字信号处理

发布时间：2018-06-30 05:48

本文选题：永磁同步电机 + FIR　；参考：《哈尔滨理工大学》2014年硕士论文

【摘要】：永磁同步电机因具有体积小、结构简单、损耗小且效率高等特点，近些年来在各个领域都得到了广泛的应用。特别是在提出矢量控制之后，永磁同步电机控制技术的发展速度有了很大的提升。对于矢量控制，电流、速度及转子位置的检测是必不可少的，而在电机运行过程中，控制操作机构和检测环节都会对检测结果产生很大的影响。如果检测数据不够准确，就会对电机控制系统的性能造成很大的影响，严重时会造成电机停转甚至烧毁电机。本文首先对永磁同步电机的矢量控制技术进行分析，并详细介绍了FIR数字滤波器的原理，选取具有对称性的线性相位结构FIR滤波器。设计基于FPGA的电机控制检测信号处理系统。根据永磁同步电机的控制策略建立了电机数学模型，确定控制系统采用矢量控制。在Matlab/Simulink的仿真软件平台上搭建了永磁同步电机控制系统的仿真模型，基于转速、电流双闭环的控制策略对系统进行验证，证明系统的可行性。以FPGA为控制核心，根据电机控制原理设计电机检测信号处理系统。其中，包括电机转速检测、转子位置检测及初始定位和电流检测。利用分布式算法设计了FIR滤波器实现对电流的准确检测，通过自顶向下的设计方法，将整个模块划分为几个功能单元，，再利用Verilog HDL硬件描述语言完成了各个单元的设计。
[Abstract]:Permanent magnet synchronous motor (PMSM) has been widely used in various fields in recent years because of its small size, simple structure, low loss and high efficiency. Especially after vector control is proposed, the development speed of PMSM control technology has been greatly improved. It is essential for vector control, current, speed and rotor position detection, but in the process of motor operation, the control operation mechanism and detection link will have a great impact on the detection results. If the detection data is not accurate enough, the performance of the motor control system will be greatly affected, and the motor will stop or even burn down when it is serious. In this paper, the vector control technology of permanent magnet synchronous motor (PMSM) is analyzed, and the principle of Fir digital filter is introduced in detail. The linear phase structure Fir filter with symmetry is selected. The signal processing system of motor control detection based on FPGA is designed. According to the control strategy of permanent magnet synchronous motor (PMSM), the mathematical model of PMSM is established, and vector control is adopted in the control system. The simulation model of PMSM control system is built on Matlab / Simulink simulation software platform. The system is verified based on the control strategy of rotational speed and current, and the feasibility of the system is proved. According to the principle of motor control, the signal processing system of motor detection is designed with FPGA as the control core. Among them, including motor speed detection, rotor position detection and initial positioning and current detection. Using distributed algorithm, Fir filter is designed to detect the current accurately. The whole module is divided into several functional units by top-down design method, and the design of each unit is completed by using Verilog HDL hardware description language.
【学位授予单位】：哈尔滨理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM341

【引证文献】