【作者】 汪华峰；

【导师】 王远波；

【作者基本信息】 西南交通大学 ， 电力电子与电力传动， 2007， 硕士

【摘要】 本文以永磁同步电机及其控制系统为研究对象。在永磁同步电机的原理与特性分析基础上，分析与构建了正弦波式永磁同步电机(SPMSM)的动态数学模型。对永磁同步电机系统转矩谐波产生机理进行了详细解析与推导，探讨了消除转矩纹波的可行性，并且提出了一种低转矩纹波的滑模开关变结构系统控制策略。文中PMSM控制系统将基于磁场定向原理(F.O.C)的矢量控制与基于滑模变结构(SMC)的自适应控制相结合，在SVPWM控制基础上，采用无位置和无速度传感器控制技术。对无位置传感器算法进行了较为全面的介绍和分析，通过探讨，选用了鲁棒性能较强的滑模控制算法。文中介绍并改进了一种基于滑模算法的状态观测器，观测器根据定子侧可测的电流、电压值估算出磁场定向控制所需要的位置信息和转速控制器的输入反馈转速信息。本文在对系统特征以及控制策略分析的基础上进行了实验验证，进行了系统硬件和软件方面的设计。硬件设计包括电源模块设计、主电路设计、检测电路和保护电路设计，处理器采用DSP240x；软件部分包括滑模控制算法模块、矢量坐标变换及SVPWM实现模块、速度PID控制模块以及与上位机的接口信息捕获模块。实验证明了控制策略的可行性。本文在介绍常规速度控制器的基础上，在永磁同步电机控制系统中尝试运用了单神经元PID自适应控制器，并取得了较为理想的效果。最后，进一步探讨和展望了PMSM的模糊神经网络控制以及递归模糊神经网络控制等智能控制方法。更多还原

【Abstract】 The text research object with the control system of permanent magnet synchronous motor (PMSM). The Operation Principles and characteristics of PMSM are analyzed .On the foundation , the dynamic mathematical model of sine-wave type permanent magnet synchronous motor( SPMSM ) is built. Based on the detailed analysis of the system torque harmonic mechanism, a new Sliding Trajectory Control algorithm for sensorless PMSM vector control system is designed which could reduce the torque ripple.The information of rotate position and rotate speed is essential in vector control system. As for the observation of position and velocity, the sensorless control technique is used. On the basis of an overall introduction and analysis to sensorless control algorithm, the system adopted a sliding mode control (SMC) with a variable control structure that gives comparatively robust performance of a drive with parameter variation and load torque disturbance. The SPMSM control system combined the theory of field orientated control (F.O.C) with the Sliding Model Control (SMC) principle. The text introduced an enhanced SMC algorithm, it increased the precision of Rotor position and velocity estimation and the stability of system when the method mentioned is applied in state observe of the vector control system.On the foundation of analysis the system characteristic and control strategy, the hardware parts and the soft parts of system are designed. Processor adopted DSP2407 .The experiment has proved feasibility of control strategy.Finally, the text discussed the intelligence control methods such as neural net control. In order to improve the performance of the PMSM drive system with traditional PID controller, the single neuron PID controller was used to control the system. Combined with the objection and control demand, a lot of experiments were done. The experiments show that the drive system of single neuron PID controller has well start-up performance, dynamic performance and strong robustness.更多还原