PLL

声波正演程序，运用二维声波波动方程进行声波的正演模拟(Sound wave forward program)

说明：  基于电网模型参数的RTDS模型，可以转换成PSCAD模型(RTDS model based on grid model parameters can be converted into PSCAD model)

用红外控制步进电机转动角度，并且用LCD显示，采用51单片机控制，转速误差在1%之内(With infrared control stepper motor rotation angle, and with LCD display, using 51 single-chip microcomputer control, speed error is within 1%)

说明：  TCSC SIMULINK MODEL IN MATLAB

固液相变方程的求解，分别建立固相和液相的能量方程进行求解(Solution of solid liquid phase change equation)

冲床应用行业检修使用的PLC程序，包含了工艺上的完整过程，其他冲床的程序也都是类似的(The PLC program used in the maintenance of punch application industry includes the complete process of technology, and other punch programs are similar.)

迭代计算算法，能够完成收敛分析，求解非线性方程根的一个很有效的方法。(Iterative algorithm can complete convergence analysis and solve the roots of non-linear equations.)

扩展卡尔曼滤波算法，应用很多，换个背景就可应用，有点基础就下载，本程序已删掉背景。(Extended Kalman filter algorithm, the application of a lot can change in the context of applications, a little foundation on the download, the procedures have been deleted from the background.)

refprop9.1是一款用于制冷剂物性查询软件，可用于工质参数的调用(RefProp 9.1 is a refrigerant physical properties query software, which can be used to call refrigerant parameters.)

说明：  可以仿真出微观范围的飞机飞行的轨迹，轨迹可以随机生成(It can simulate the flight trajectory of the aircraft in the micro range, and the trajectory can be randomly generated)