matlab-PID

matlab环境下的三相逆变仿真，里面含有SPWM调制模块。(three phase inverter！)

An effective implicit time integration scheme was proposed for the fi nite element solution of nonlinear problems in structural dynamics. Various important attributes were demonstrated. In particular, it was shown that the scheme remains stable, without the use of adjustable parameters, when the commonly used trapezoidal rule results in unstable solutions. In this paper we focus on additional important attributes of the scheme, and specifi cally on showing that the procedure can also be effective in linear analyses. We give, in comparison to other methods, the spectral radius, period elongation, and amplitude decay of the scheme and study the solution of a simple ‘model problem’ with a very fl exible and stiff response.

基于OC算法的连续体动力学机构拓扑优化设计代码，值得下载收藏(The code of topology optimization design of continuum dynamics mechanism based on OC algorithm is worth downloading and collecting.)

说明：  一个简单的计算器gui界面，实现加减乘除和三角函数计算。(A simple calculator GUI interface to realize addition, subtraction, multiplication and division and trigonometric function calculation.)

里面是一个地震射线追踪的源码程序，还有相关的文档，适合学习地球物理专业的学生。(Inside is a seismic source ray tracing program, as well as related documentation for learning geophysics majors.)

PMSM_vatiablefrequency.rar,motor,功率电子领域matlab仿真文件，已经验证过，程序运行正常(PMSM_vatiablefrequency.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

This is anothe file for you transmited transport high class

说明：  BP神经网络的预测实例分析并附有详细的解释(Examples of BP neural network forecasting analysis together with a detailed explanation)

修改Windows95 GUI函数的源代码 (The source for modifying windows 95s GUI function)

VOICE UNVOICED SILENCE PITCH MARKING