【作者】 彭瑞；

【导师】 朱学忠；

【作者基本信息】 南京航空航天大学 ， 电力系统及其自动化， 2007， 硕士

【摘要】 随着永磁材料、电力电子技术以及数字信号处理器的发展,永磁同步电机交流伺服系统获得了广泛的应用。永磁同步电动机转子励磁由永磁体产生,无励磁绕组和滑环、电刷,具有效率高、功率密度高、转动惯量小以及高可靠性等特点。本文主要研究了永磁同步电机交流伺服系统的建模仿真和基于TMS320LF2407A数字信号处理器的系统实现,主要内容如下:建立了永磁同步电动机在dq坐标系中的数学模型,在SIMULINK中建立了仿真模型。分析了电流滞环跟踪PWM、SPWM和SVPWM的特点,对电流滞环跟踪PWM和SPWM的方式产生PWM信号控制逆变器进行了仿真。本文采用了id=0的控制策略实现永磁同步电机的矢量控制。在给定转矩时,仿真模型运行性能良好。在仿真分析的基础上,分别介绍了控制系统的硬件设计和软件设计。详细介绍了由DSP TMS320LF2407A和CPLD EPM3128ATC100-10构成的控制电路。应用汇编语言完成了控制系统的软件设计,并在硬件平台上进行了测试。实验结果表明,该系统具有良好的动态和静态性能。更多还原

【Abstract】 Permanent magnet synchronous motors (PMSM) have shown increasing popularity for high performance servo systems due to the recent developments of magnetic materials, power converters and digital signal processors. PMSM have the characters of high running efficiency, great power density, low inertia, high reliability, etc. It does not need an external power supply to excite the rotor field and hence the field winding and slip rings are eliminated.This thesis sets up the mathematical model of the permanent magnet synchronous motor in SIMULINK. Current hysteresis band PWM, SPWM and space vector PWM have been analyzed. It sets up vector control model in SIMULINK. It realizes the control by two different ways, hysteresis and SPWM. The model works well when the giving torque changes.On the base of principle and simulation analysis, the thesis particularly presents the designing and realizing methods on the whole servo system’s hardware and software. The control scheme is implemented using a high speed DSP, TMS320LF2407A and a CPLD EPM3128ATC100-10. The software is implemented by assembly language. Furthermore the experiment results for the full-digital servo system presented. These waves and data indicate the speed servo systems which are designed in this thesis have satisfying dynamic and static performance.更多还原