文档介绍：永磁同步电机自适应模糊控制方法的研究 1 永磁同步电动机自适应模糊控制方法的研究摘要永磁同步电动机由于其结构中掺入了高能量的稀土合金如铆-铁- 硼。与传统的电励磁同步电机相比,永磁同步电机具有结构简单、体积小、重量轻、效率高、功率因数高、转矩/ 惯量比高、转动惯量低、易于散热、易于维护保养等优点因而其应用范围极为广泛,在现代交流电机中也占有举足轻重的地位。文中首先概要性介绍了交流调速系统的发展, d-q 坐标系下永磁同步电动机的数学模型,然后建立了永磁同步电机的矢量控制系统。当采用传统的 PI 控制器时,控制器参数与对象匹配的情况下可以取得良好的控制效果。但是当对象参数发生变化时, PI 参数需要重新整定。模糊控制具有不依赖于对象的数学模型、鲁棒性强的优点,能够很好地克服系统中模型参数变化和非线性等不确定因素,从而实现系统的高品质控制。本文将模糊控制与传统 PI 控制器相结合应用于永磁同步电动机调速控制系统中,设计了基于模糊自适应 PI 控制器,用 MATLAB \ SIMULINK 进行了仿真,仿真结果表明,这种复合的模糊自适应 PI控制器较单一的传统 PI控制器能够获得较好的控制效果。自适应模糊控制器通过在线调整自适应参数确保永磁同步电机的输出渐近收敛于给定的参考信号。通过理论研究和仿真研究证实,当永磁同步电动机的参数或负载发生突变时,系统响应仍可以很好的跟踪参考信号,具有良好的动态性能。关键词:永磁同步电动机( PMSM ),矢量控制, PI控制,模糊控制,自适应陕西科技大学毕业论文(设计说明书) 2 Title Abstract Permanent synchronous motor because of its structure with a high-energy rare earth alloy as rivet -of iron – boron, with the traditional excitation synchronous motor, PMSM have a simple structure, size and weight and high efficiency, the power factor, high power factor the low proportion of torque and inertia ,low moment of inertia, easy to turn to the amount of heat and maintenance, the advantages and its broad scope of application, especially ina demanding control the accuracy and reliability of the occasion, such as air and space, numerical control machine, processing center, such robots have been widely used in munication of electric motors are very important position. Firstly the development of AC speed regulation system, the control strategies used in the PMSM control system and the mathematics model of PMSM are generalized in this thesis. Then, PMSM vector control system is set up. Good performance can be achieved when the PI controller's parameters match with the control system. However, the parameters of PI have to be modified when the system's parameters change. Fuzzy control has the advantage ofnot relying on the object mathematical model and strongly robustness so it can e the uncertainty of element in the system such as parameter change and non-linear change and can realize the high qu