【作者】 朱志伟；

【导师】 杨振强；

【作者基本信息】 大连理工大学 ， 电机与电器， 2010， 硕士

【摘要】 近年来,现代电力电子技术、微电子技术以及现代控制理论的飞速发展,促进了永磁同步电动机无传感器控制技术的不断进步。无传感器永磁同步电动机调速系统不仅具有结构简单、易维护、运行效率高、调速性能好等优点,还具有体积小、成本低、可靠性高以及能应用于一些特殊场合的特点。本课题采用了滑模观测器的无传感器算法对电机的转子位置进行估计,研究并开发了永磁同步电机的无传感器矢量控制系统。本文详细论述了矢量控制技术的原理及滑模变结构控制原理,在对永磁同步电机的数学模型分析的基础上,选取了id=0的矢量控制策略来驱动永磁同步电机。在基于滑模观测器的无传感器控制算法方面,文章给出了详细的建立过程。并在Matlab/simulink软件平台上进行了仿真分析,结果表明,滑模观测器估算的转子角度准确,验证了其科学性与可行性。最后,文章给出了系统设计的硬件电路与软件流程图。本课题中,硬件系统采用了TMS320F2808DSP芯片作为控制核心,以IPM作为驱动模块,采用SVPWM技术进行实验研究。软件流程方面,文章给出了滑模控制模块、SVPWM模块等主要模块的流程图,介绍了永磁同步电机矢量控制系统的中断流程等。在课题的最后,根据波形等对系统的性能做出了分析与评价,控制系统在经过调试以后,成功实现了电机无传感器的矢量控制算法,有着良好的转矩与速度响应,调整精度高,运行比较稳定,基本达到了课题预期的效果。更多还原

【Abstract】 In recent years, the fast development of modern power electronic technology, microelectronic technology and the theory of modern control has unceasingly promoted the permanent magnetism synchronous motor sensorless control technology. The non-sensor permanent magnetism synchronous motor velocity modulation system is not only simple in structure, easy to maintain, highly efficient to operate, excellent in velocity modulation performance, but also small in volume, low in cost, high in reliability and it can be applied in some special occasions. This research uses the non-sensor algorithm of sliding-mode observer to estimate the position of electrical machinery’s rotor, studies and developes the non-sensor vector control system of the permanent magnetism synchronous machine.This article elaborates the principle of vector control technology and the control theory of sliding model variable structure. Based on the mathematical model analysis of the permanent magnetism synchronous machine, this article selects the vector control strategy of id=0 to actuate permanent magnetism synchronous machine.This paper gives the detailed process of establishing on non-sensor control algorithm of the sliding-mode observer and carries on the simulation analysis on the Matlab/Sumiulink software platform. Results show that the estimation of the rotor angle by the sliding-mode observer is accurate and verifies its scientificity and feasibility. Finally, the article gives the hardware circuit and software flow chart designed by the system. The hardware of this article adopts TMS320LF2808DSP chip as control core, IPM as driving module and uses SVPWM technology to investigate. In terms of the software, this essay gives flowcharts of the sliding mode control module, SVPWM module and other main modules, introduces the flow of interruption and the overall process of the permanent magnet synchronous motor vector control system.At the end of the project, analysis and evaluation on performance of the system are made according to the simulation wave. After debugging, the control system successfully implements the vector control algorithm of the motor non-sensor with good torque and speed, high precision, stable operation and basically reaches the desired effect of this topic.更多还原