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介绍使用matlab的有限元分析的编程方法(introduce finite element programe using matlab)

simulink环境下的永磁同步电机的磁场定向控制，采用id=0的控制策略(simulink environment of permanent magnet synchronous motor field oriented control, using id = 0 control strategy)

1、 生成多周期线性调频信号，并对其进行频谱分析； 2、 对仿真生成的信号利用两种窗口函数进行STFT变换生成时频分析图(1, to generate multi-cycle chirp signal, and its spectrum analysis 2, the signal generated by the simulation window function using two STFT transform to generate time-frequency analysis chart)

说明：  异步电机矢量控制，异步电动机具有非线性、强耦合、多变量的性质，要获得高动态调速性能，必须从动态模型出发，分析异步电动机的转矩和磁链控制规律，研究高性能异步电动机的调速方案。矢量控制系统和直接转矩控制系统是已经获得成熟应用的两种基于动态模型的高性能交流电动机调速系统。矢量控制系统通过矢量变换和按转子磁链定向，得到等效的直流电动机模型，然后模仿直流电动机的控制策略设计控制系统。(Vector control of asynchronous motor, asynchronous motor has the characteristics of non-linear, strong coupling and multi variable. In order to obtain high dynamic speed regulation performance, we must start from the dynamic model, analyze the torque and flux control law of asynchronous motor, and study the speed regulation scheme of high-performance asynchronous motor. Vector control system and direct torque control system are two kinds of High-Performance AC motor speed control system based on dynamic model, which have been widely used. The vector control system obtains the equivalent DC motor model through vector transformation and rotor flux orientation, and then designs the control system by imitating the control strategy of DC motor.)

5th exercise of computer graphics course

智能天线matlab仿真源程序，用于算法的研究(smart antenna simulation)

说明：  扩展卡尔曼滤波算法，具有实时估计非线性系统的优点(Extended Kalman filter algorithm with advantages of real-time estimation of nonlinear systems)

matlab simulation program for MSK transmission systems

以Matlab与C语言、Visual Basic、Excel为核心语言，配有大量的代码实例，系统地介绍了常用的代码优化方法和功能扩展程序(In Matlab and C language, Visual Basic, Excel as the core language,配有大量code example, the system commonly used to introduce a code optimization method and function of the expansion process)

基于三相双极性SPWM变频调速的水泵供水系统SIMULINK(Based on the three-phase bipolar SPWM VVVF pump water supply system SIMULINK)