Star Strider
HIC SUNT DRACONES！专业人士：医师（医学博士）：美国内科医学委员会外交官；硕士生物医学工程：仪器，信号处理，控制，系统识别，参数估计非专业：业余额外类业余无线电操作员；私人飞行员，飞机单发动机土地，仪器评级飞机；玩家注意：除非它们是关于我的文件交换贡献，否则我不会回复电子邮件或个人消息。时区：UTC-7（标准）;UTC-6（日光节省/夏季）
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Answered
从Bode图中提取数据。
s = tf('s'); HLM = ((2.524e-06)*s^3 + 37.11*s^2 + 37.6*s)/((2.704e-07)*s^3 + 1.767*s^2 + 41.36*s + 80); Finf = 1e-3; %Hz Fs...
从Bode图中提取数据。
s = tf('s'); HLM = ((2.524e-06)*s^3 + 37.11*s^2 + 37.6*s)/((2.704e-07)*s^3 + 1.767*s^2 + 41.36*s + 80); Finf = 1e-3; %Hz Fs...
environ 9 heures ago | 1
Answered
substract an element from previous element in a matrix
The diff function seems to be appropriate.
substract an element from previous element in a matrix
The diff function seems to be appropriate.
environ 9 heures ago | 0
Answered
绘制等高线轮廓和预测
我不确定您想要什么结果。Contour3功能或Surfc可以是一种选项-N1 = 10;N2 = 10;x1 = linspac ...
绘制等高线轮廓和预测
我不确定您想要什么结果。Contour3功能或Surfc可以是一种选项-N1 = 10;N2 = 10;x1 = linspac ...
Environ 14 Heures以前|0
Answered
数值需要匿名函数的列向量tion
做元素划分：yprime = @（x，y）（（ - x。*y）./（sqrt（6-（y。^2））））;↑而且确实如此 - 选项= o ...
数值需要匿名函数的列向量tion
做元素划分：yprime = @（x，y）（（ - x。*y）./（sqrt（6-（y。^2））））;↑而且确实如此 - 选项= o ...
Environ 14 Heures以前|0
Answered
Most effective way to solve nonhomogeneous linear ODE problem
I would use the Control System Toolbox lsim function with the system object created with the ss function and your (A,B,C,D) matr...
Most effective way to solve nonhomogeneous linear ODE problem
I would use the Control System Toolbox lsim function with the system object created with the ss function and your (A,B,C,D) matr...
Environ 15 Heures以前|0
Answered
使用网格的错误，z必须是矩阵，而不是标量或向量。
在图（3）中，代码必须为：[tt，xx] = meshgrid（t1，x）;网格（xx，tt，t）问题是使用“ t”而不是“ t1”，然后使用...
使用网格的错误，z必须是矩阵，而不是标量或向量。
在图（3）中，代码必须为：[tt，xx] = meshgrid（t1，x）;网格（xx，tt，t）问题是使用“ t”而不是“ t1”，然后使用...
Environ 15 Heures以前|0
|公认
Answered
sub2ind - understanding question
The graphic explanation in Examples explains how MATLAB stores and addresses matrices using both linear indexing and subscripts....
sub2ind - understanding question
The graphic explanation in Examples explains how MATLAB stores and addresses matrices using both linear indexing and subscripts....
Environ 18 Heures以前|0
Answered
如何使用[-2,2]的间隔绘制此功能？
使用fimplicit- syms x f（x）= x + 1-2*sin（pi*x）图fimplicit（f，[-2 2]）网格xlabel（'x'）。
如何使用[-2,2]的间隔绘制此功能？
使用fimplicit- syms x f（x）= x + 1-2*sin（pi*x）图fimplicit（f，[-2 2]）网格xlabel（'x'）。
1段前|0
Answered
在矩阵的每一行（321 x 123 double）中找到零交叉点
t = linspace(0, 5, 123); % Create Data A = sin(randi(9,5,1)*2*pi*t/5 + 2*pi*randi(9,5,1)) ...
在矩阵的每一行（321 x 123 double）中找到零交叉点
t = linspace(0, 5, 123); % Create Data A = sin(randi(9,5,1)*2*pi*t/5 + 2*pi*randi(9,5,1)) ...
1段前|0
|公认
Answered
如何使此信号看起来像矩形脉冲？
One option is the rectpuls function — t = linspace(-1.5, 1.5, 500); p = rectpuls(t); figure plot(t,p, 'LineWidth',2) g...
如何使此信号看起来像矩形脉冲？
One option is the rectpuls function — t = linspace(-1.5, 1.5, 500); p = rectpuls(t); figure plot(t,p, 'LineWidth',2) g...
1段前|0
Answered
绘制第二阶非线性ode的相空间
I am not certain what you want to plot for the phase plot. This calculates and plots as a funciton of and also calculates t...
绘制第二阶非线性ode的相空间
I am not certain what you want to plot for the phase plot. This calculates and plots as a funciton of and also calculates t...
1段前|1
|公认
Answered
How to plot graph?
尝试一下 - ax = gca;ax.yaxis.exponent = 0;我检查了一下，这将根据R2018A数字pro ...在R2018A中起作用。
How to plot graph?
尝试一下 - ax = gca;ax.yaxis.exponent = 0;我检查了一下，这将根据R2018A数字pro ...在R2018A中起作用。
1段前|0
|公认
Answered
如何在矩阵中绘制FFT值的阶段？
Use the angle function to calculate the phase from the complex fft result. The unwrap function may also be helpful, depending o...
如何在矩阵中绘制FFT值的阶段？
Use the angle function to calculate the phase from the complex fft result. The unwrap function may also be helpful, depending o...
3期前|1
Answered
How to optimize an objective function with repect to two variables using fmincon?
最大化函数的一般方法是对其进行否定，以便最小的优化函数实际上是...
How to optimize an objective function with repect to two variables using fmincon?
最大化函数的一般方法是对其进行否定，以便最小的优化函数实际上是...
3期前|1
|公认
Answered
找到曲线形成点的边界
这不是完美的，但是我能做的最好的数据 - ld = load（'data.mat'）;beta = ld.beta;r = abs（beta ...
找到曲线形成点的边界
这不是完美的，但是我能做的最好的数据 - ld = load（'data.mat'）;beta = ld.beta;r = abs（beta ...
4 jours ago | 0
Answered
Converting discrete signal to frequency domain
The fft calculation an plotting is straightforward. (You can also use the pspectrum function and others.) Fs = 100; Fn = Fs...
Converting discrete signal to frequency domain
The fft calculation an plotting is straightforward. (You can also use the pspectrum function and others.) Fs = 100; Fn = Fs...
4 jours ago | 0
|公认
Answered
Matlab 2015a Script to solve the equation w=-tan(0.8*w)
Use vpasolve with an initial value (or range of values as described in Specify Ranges of Solutions) — syms w EQ = w + tan (0....
Matlab 2015a Script to solve the equation w=-tan(0.8*w)
Use vpasolve with an initial value (or range of values as described in Specify Ranges of Solutions) — syms w EQ = w + tan (0....
4 jours ago | 0
|公认
Answered
Please explain this code about differential equations.
They refer to the function values returned by ode45 (in this code). y(1) is y(2) is y(3) is That can easily be inferre...
Please explain this code about differential equations.
They refer to the function values returned by ode45 (in this code). y(1) is y(2) is y(3) is That can easily be inferre...
4 jours ago | 0
Answered
divide a string every 15 characters
Try this — A = ["+6.64430238e+00+1.14987825e-02-4.68099585e-06+9.62334222e-10-8.24360065e-14"]; B = string(reshape(char(A),15...
divide a string every 15 characters
Try this — A = ["+6.64430238e+00+1.14987825e-02-4.68099585e-06+9.62334222e-10-8.24360065e-14"]; B = string(reshape(char(A),15...
4 jours ago | 1
|公认
Answered
三角非线性方程
尝试这样的事情 - theta = 30;k = 360;h = 0.5555;f = @（h）（（cosd（theta）。*（sind（k*h）。^2）） - （2*（sind（k。*h。
三角非线性方程
尝试这样的事情 - theta = 30;k = 360;h = 0.5555;f = @（h）（（cosd（theta）。*（sind（k*h）。^2）） - （2*（sind（k。*h。
4 jours ago | 0
|公认
Answered
How do I hyphen a word using LaTex?
它似乎是按书面形式工作的 - 图Xlabel（“多学科”，“解释器”，“乳胶”）您是否想要不同的结果？...
How do I hyphen a word using LaTex?
它似乎是按书面形式工作的 - 图Xlabel（“多学科”，“解释器”，“乳胶”）您是否想要不同的结果？...
5期前|0
Answered
Arrays have incompatible sizes for firpm() function.
The ‘frequency’ and ‘response’ vectors must be the same lengths, and they must have even numbers of elements (according to the d...
Arrays have incompatible sizes for firpm() function.
The ‘frequency’ and ‘response’ vectors must be the same lengths, and they must have even numbers of elements (according to the d...
5期前|0
|公认
Answered
Fitting a curve (not a surface) for set of 3d points
I have no idea what model you want to fit to the data. This does a linear regression — A = [-27.9887180593615 -1340.7554656...
Fitting a curve (not a surface) for set of 3d points
I have no idea what model you want to fit to the data. This does a linear regression — A = [-27.9887180593615 -1340.7554656...
5期前|0
|公认
Answered
Using plot with dates stored in a cell array
I get a different result — i = 1; dates{i} = '1/22/20'; dtv = datetime(dates{i}, 'InputFormat','MM/dd/yy') That appears to ...
Using plot with dates stored in a cell array
I get a different result — i = 1; dates{i} = '1/22/20'; dtv = datetime(dates{i}, 'InputFormat','MM/dd/yy') That appears to ...
5期前|0
|公认
Answered
How do I save multiple PCA results in a cell array? Error: Brace indexing not supported
I am not certain what the problem is. This runs without error for me, and produces the appropriate result — LD = load('pre...
How do I save multiple PCA results in a cell array? Error: Brace indexing not supported
I am not certain what the problem is. This runs without error for me, and produces the appropriate result — LD = load('pre...
5期前|0
|公认
Answered
Needing help using ode15s to solve an equation.
我发现让符号数学工具箱完成所有繁重的举重最容易 - syms c（t）c_in c_in c_in q_in q_in q_out t v_0 y de =（v _...
Needing help using ode15s to solve an equation.
我发现让符号数学工具箱完成所有繁重的举重最容易 - syms c（t）c_in c_in c_in q_in q_in q_out t v_0 y de =（v _...
5期前|1
|公认
Answered
help plot of function using handle
Call ‘G’ with its argument — b1 =1 b2 =2 b3 =3 b4 = 4 % Replace Missing Value %------...
help plot of function using handle
Call ‘G’ with its argument — b1 =1 b2 =2 b3 =3 b4 = 4 % Replace Missing Value %------...
6期前|1
|公认
Answered
Numerical Fourier transforms of matrix?
I have no idea what you want. I would not suggest integrating the individual sine and cosone coefficients using numerical integ...
Numerical Fourier transforms of matrix?
I have no idea what you want. I would not suggest integrating the individual sine and cosone coefficients using numerical integ...
6期前|0
Answered
Can I use an anonymous function as an input to a regular function
我不确定你在做什么。尝试一下 - anon = @（x）x+3;y = hello（3，anon）函数y = hello（input1，fcn）...
Can I use an anonymous function as an input to a regular function
我不确定你在做什么。尝试一下 - anon = @（x）x+3;y = hello（3，anon）函数y = hello（input1，fcn）...
6期前|0
