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load flow for radial system

基于matlab的电压电流双闭环的三相并网逆变器模型，采用电压外环及电流内环控制方式(Matlab-based dual-loop voltage and current three-phase grid-connected inverter model, the outer voltage loop and inner current loop control)

F16开环动力学系统模型。输入为油门及三个舵面控制，以及系统低阶、高阶选择器。输出为飞机飞行状态以及油门大小。采用Quaternion四元素法，可以有效避免俯仰角theta达到90°时数学奇异现象。(F16 open-loop dynamic system model. Throttle input and three rudder control, and system low, high selector. Output is the size of aircraft status, and throttle. Quaternion method using the four elements, can effectively avoid the pitch angle theta to 90 °, mathematics strange phenomenon.)

说明：  BP neural network for classification of data-voice signal classification

时频分析 时频分析方法提供了时间域与频率域的联合分布信息，清楚地描述了信号频率随时间变化的关系。(Joint Time-Frequency Analysis)

SPWM调制，三相逆变电源建模，能很好的输出三相正弦电压，(SPWM modulation, three-phase inverter power modeling, can be a good three-phase sinusoidal output voltage,)

Adaptive DS-CDMA Receiver

psk调制，给出了不同抽样速率和信噪比下的仿真结果(psk modulation, given the different sampling rate and SNR of the simulation results)

说明：  用Matlab产生随机拓扑图，优化并显示结果。(Matlab random topology map, optimization and display results.)

平均误码率统计的的matlab程序，使用的时候还有一点注意事项，见程序内部说明(The average bit error rate statistics matlab program, when used, also Note, see the procedures for internal instructions)