基于干扰观测器的永磁同步电机速度跟踪控制系统

发布时间：2018-03-26 14:39

本文选题：永磁同步电机　切入点：滑模变结构　出处：《湘潭大学》2017年硕士论文

【摘要】：永磁同步电机具有体积小、效率高和可靠性好的优势,在现代工业控制领域应用越来越广泛。然而永磁同步电机本身是强耦合性、复杂度较高的系统,存在着诸如电流耦合、参数摄动和外部干扰等诸多不利影响,直接影响系统性能。针对以上问题,提出一种基于干扰观测器的滑模控制算法,并将其应用于永磁同步电机控制系统中,以实现永磁同步电机速度跟踪控制。本课题选用TI公司DSP28035芯片,选择英威腾永磁同步电机为研究对象,对永磁同步电机速度跟踪系统进行研究。论文的主要工作如下:1、对永磁同步电机速度跟踪系统的历史背景及意义进行介绍;并分析国内外永磁同步电机速度跟踪系统的研究现状;在d-q坐标系下建立永磁同步电机数学模型;阐述空间矢量调制(SVPWM)技术的原理。2、基于干扰观测器的永磁同步电机滑模控制。首先为实现电机转速的快速响应与高精度跟踪,利用Lyapunov稳定性理论设计滑模控制器。其次在此基础上,引入基于DOB的反馈控制器以补偿负载变化扰动,从而保证系统的抗干扰性与鲁棒性。最后在MATLAB/SIMULINK平台上,搭建基于干扰观测器的永磁同步电机滑模速度跟踪系统仿真模型,通过仿真试验结果表明所提出的基于干扰观测器滑模控制算法较滑模算法性能更优,效果更好。3、基于DSP的永磁同步电机控制系统设计。首先在MATLAB/SIMULINK仿真基础上,以TI公司出品的DSPTMS320F28035为核心处理器,搭建永磁同步电机速度跟踪系统硬件实验平台,完成基于DSP的控制系统硬件和软件设计。其次详细介绍采样电路和智能功率模块IPM等硬件模块,并在此基础上,给出系统软件控制部分,完成主程序、中断控制程序、SVPWM算法以及各项子程序设计。最后通过实验结果证明所搭建的永磁同步电机速度跟踪系统是有效可行的。
[Abstract]:Permanent magnet synchronous motor (PMSM) has the advantages of small size, high efficiency and good reliability, so it is widely used in modern industrial control field. However, PMSM is a system with strong coupling and high complexity, such as current coupling. A sliding mode control algorithm based on disturbance observer is proposed and applied to permanent magnet synchronous motor (PMSM) control system, which is directly affected by many adverse effects, such as parameter perturbation and external disturbance. In order to realize the speed tracking control of permanent magnet synchronous motor (PMSM), the DSP28035 chip of TI company and the permanent magnet synchronous motor (PMSM) are selected as the research object. The main work of this paper is as follows: 1. The historical background and significance of PMSM speed tracking system are introduced. The research status of the speed tracking system of PMSM at home and abroad is analyzed, and the mathematical model of PMSM in d-q coordinate system is established. This paper describes the principle of SVPWM (Space Vector Modulation) technology and the sliding mode control of PMSM based on disturbance observer. Firstly, in order to realize the fast response and high precision tracking of motor speed, The sliding mode controller is designed by using Lyapunov stability theory. Secondly, the feedback controller based on DOB is introduced to compensate the disturbance of load variation, so as to ensure the anti-interference and robustness of the system. Finally, on the MATLAB/SIMULINK platform, The simulation model of permanent magnet synchronous motor sliding mode velocity tracking system based on disturbance observer is built. The simulation results show that the proposed sliding mode control algorithm based on disturbance observer is better than the sliding mode algorithm. The control system of permanent magnet synchronous motor (PMSM) based on DSP is designed. Firstly, on the basis of MATLAB/SIMULINK simulation, the hardware experiment platform of PMSM speed tracking system is built with TI's DSPTMS320F28035 as the core processor. The hardware and software design of the control system based on DSP is completed. Secondly, the hardware modules such as sampling circuit and intelligent power module, such as IPM, are introduced in detail. On this basis, the software control part of the system is given to complete the main program. The interrupt control program SVPWM algorithm and each subroutine are designed. Finally, the experimental results show that the speed tracking system of PMSM is effective and feasible.
【学位授予单位】：湘潭大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP273;TM341

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