internal_force

A MATLAB textbook. A good eBook for MATLAB user

basic fourier series gui for beginners

SIMPLE PWM SIMULATION

连接一起的下半部分是传统一次调频系数的仿真，参数如算例所示，上半部分是其改进一次调频系数后的仿真，最后由示波器观测波形的不同。(The lower half of the connection is the simulation of the traditional primary frequency modulation coefficient. The parameters are shown in the example. The first half is the simulation after the improvement of the primary frequency modulation coefficient, and finally the waveform is observed by the oscilloscope.)

电能质量扰动信号信号通过hilbert变换得到瞬时频率，瞬时幅值，hilbert谱，边际谱等重要特征，从而实现特征提取。(Power quality disturbance signals are obtained by hilbert transform to obtain instantaneous frequency, instantaneous amplitude, hilbert spectrum, marginal spectrum and other important features, in order to achieve feature extraction.)

function [ H ,S ] = HS( f ) UNTITLED2 Summary of this function goes here Detailed explanation goes here syms x1 x2 f1=diff(f,x1) f2=diff(f,x2) S= [f1 f2] H = [diff(f1,x1) diff(f1,x2) diff(f2,x1) diff(f2,x2)] end s0=subs(S,findsym(S),[0 0])(function [H, S] = HS (f) UNTITLED2 Summary of this function goes here Detailed explanation goes here syms x1 x2 f1 = diff (f, x1) f2 = diff (f, x2) S = [f1 f2] H = [diff (f1, x1) diff (f1, x2) diff (f2, x1) diff (f2, x2)] end s0 = subs (S, findsym (S), [0 0 ]))

多输入谐波信号，作为谐波信号分析得输入信号(Multi-input harmonic signal, as the harmonic signal of the input signal)

对称三角线性调频连续波信号模糊函数分析Symmetrical triangular linear frequency modulation continuous wave signal ambiguity function analysis(Symmetrical triangular linear frequency modulation continuous wave signal ambiguity function analysis)

Auto sequential current source inverter.circuit equaally resmbels which is in in p.s.bimbra

he modeling equation of this system is MD2X+bDX+kX = F The transfer function between the displacement X(s) and the input F(s) then becomes X(s) / F(s) = 1 / (Ms2 + bs +k)