differential-equation-modeling

说明：  matlabtools used in software

潮流计算：算例为IEEE33 计算网络节点电压 (Computing network node voltage power flow calculation examples for the IEEE33)

关于求解线性规划单纯形法的matlab程序 (Simplex method of linear programming in matlab program)

matpower作电力系统潮流分析,故障计算，市场交易、运行调度等(power ananlysis)

利用Matlab软件编程实现DDS（直接数字频率合成技术）。设时钟的频率为固定值f_C，在CLK的作用下，如果按照0000,0001,0010，…，1111的地址顺序读出ROM中的数据，即表1中的幅值编码，其正弦信号频率为f_01；如果每隔一个地址读一次数据（即按0000,0001,0100，…，1110顺序），其输出信号频率为f_02，且f_02将比f_01提高一倍，即f_02=2f_01；其余类推。这样，就可以实现直接数字频率合成器的输出频率的调节。(Matlab software programming DDS (direct digital frequency synthesis). Clock frequency set to a fixed value f_C, under the effect of CLK, according to 0000,, ..., 1111 of the sequence of addresses in the ROM reads the data, i.e., the amplitude of the encoding in Table 1, the frequency of the sinusoidal signal f_01 if every time a read address data (ie 0000,0001,0100, ..., the order of 1110), the output signal frequency is f_02, and f_02 f_01 than doubled, i.e. f_02 = 2f_01 rest on. This allows direct digital frequency synthesizer output frequency regulation.)

important aspect in the ASK modulation scheme

用递推式法求解；用二分法，牛顿迭代法，迭代法求解方程的近似根(Using recursive method for solving with the dichotomy, Newton iteration method, iteration method for solving the approximate root)

mm1仿真模型代码,实现排队理论的模拟。可设置队列长度，泊松过程到达强度，服务率，排队人数， 得到平均队列长度等参数。(network simulation code for MM1 model. Flexiable model for queueing theory study.)

基于DQ旋转坐标，Uq=0,实现了三相锁相环,对DSP，FPGA的设计具有指导意义(DQ rotating coordinate-based, Uq = 0, to achieve a three-phase locked loop, for DSP, FPGA design instructive)

谱处理的瀑布图显示，超好的(Spectral processing waterfall diagram shows, super good)