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hey. I keep getting an error for this code. If anyone could help me it would be greatly appreciated.
Should num also use poly2sym? Otherwise, gs is 1 x 2 transfer function matrix, which may be what you want, but maybe not. If y...

4 years ago | 1

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ilaplace gives time limited result
Sometimse fplot() gets confused. Does regular plot() show the expected result? syms s syms t real A = 20e3; B = 10e3; C= 4...

4 years ago | 0

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Why Matlab do not respect the exponential matrix property \exp^{YXY^{-1}}=Y\exp^XY^{-1}?
The identity holds for the matrix exponential, which is implemented with expm(), not exp() (which is the element-wise exponentia...

4 years ago | 1

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Simulink - saw tooth signal minimum counter
Assuming that your signal has sharp corners .... One approach may be to: Input the signal into a Detect Increase block. The out...

4 years ago | 0

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Transform or eliminate states of mechss object
Even garden variety ss objects can't have the system matrices changed one by one sys = rss(4,2,2) % model with four states, tw...

4 years ago | 0

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Initializing parameters from an mfile function to a simulink file
If I understand your workflow correclty, it looks something like this: function simout = myfunction(inputarg) simparam1 = 5*...

4 years ago | 0

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How to delay a loop in a function block?
I tried this in 2019a and it worked exactly as expected. The effect of the pause(1) is to make this (simple) simulation take 12 ...

4 years ago | 0

Question

What's the Best Way to Symbolically Define the Periodic Extension of a Finite Duration Signal?
Suppose I have a finite duration signal: syms s(t) s(t) = triangularPulse(0,1,1.5,t); fplot(s(t)) Now I want to define the p...

4 years ago | 1 answer | 0

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ODE45 producing NaN values for a set of differential equations
One problem appears to be that the initial condition of x(5) is 0, which results in a divide by zero in the computation of theta...

4 years ago | 1

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Unique Block Parameters for Multiple Instances of the Same Referenced Subsystem or Custom Library Subsystem?
Parameterize Instances of a Reusable Referenced Model might be useful doc page, if I understand the question correctily.

4 years ago | 0

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Calculate the complementary bivariate normal.
I think you can use mvncdf as: Cb = mvndcf([alpha alpha],[inf inf],[0 0],[1 rho;rho 1])

4 years ago | 1

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In 3 axis gyroscope the output (Wmeas) contains error or the output is without error?
Are you asking about a speciic gyro model provided in Matlab or is this a general question? In either case, the input to the th...

4 years ago | 0

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How to write piecewise function in symbolic form?
Use &, not && syms x(t) x(t) = piecewise(-2 < t & t <= -1 , t+2, -1 < t & t <= 1, 1, 1 < t & t <= 2, -t+2, 0) fplot(x(t),'-o...

4 years ago | 0

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fft tool - amplitude dependence vs. frequency
For pure sinusoidal signals, the "expected" result is only obtained when the length, N, of the FFT satisfies N = M*Fs/F1 where...

4 years ago | 0

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How to use a matrix of 12*12 to form a matrix of 96*96?
It's too bad we can't do something like this: B = [1 2;3 4]; repeats = 2; % use a smaller example % R = blkdiag(repmat({B},1,r...

4 years ago | 1

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Simulink continue simulation from last timestep
Unclear why Matlab Function blocks would slow anything down, at least not as a general rule. Save and Restore operating points ...

4 years ago | 1

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Is there a way to input an array from the workspace into a Simulink model chunk by chunk/per simulation step?
Can you use a From Workspace block? Use your 20 x 3 array and uncheck the box for Interpolate Data.

4 years ago | 0

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Can someone help me implement my Heaviside function into my Kuramoto model please?
The function H seems to do the opposite of what you want it do, i.e., it's zero over the desired range and one outside that rang...

4 years ago | 0

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how to plot the result of convolution? ; used conv()
I assume you meant x(t) = sin(pi*t) (not sin(pi*x)). Let's rewrite: x(t) = sin(2 * pi / 2 * t). So x(t) has period T = 2 as ...

4 years ago | 0

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designfilt and get the numerator and denominator coefficients of my filter
Trying to convert such a high order filter to a tf representation is likely not going to work well. Maybe consider implementing ...

4 years ago | 1

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pulse train with gaussian pulses in an irregular interval
Can't the d input to pulstran be set to whatever offsets you want, random or otherwise? Taking the example from the pulstran do...

4 years ago | 0

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Unable to find explicit solution to a very simple equation
The equation in the question is an inequality, but the supposed solution posed in the question is for an equality: syms x real ...

4 years ago | 1

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How to load matlabFunction output into Simulink
matlabFunctionBlock can be used to generate a block directly into the Simulink model from the symbolic expression. It will only...

4 years ago | 1

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Solving nonlinear system of ode in Simulink
The best way IMO is to get the equations in the form xdotdot = f(p,u,x,xdot), which you already did. But what did you mean by "...

4 years ago | 0

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How to count number of pulses in a signal in Simulink
Similar problem addressed in this link.

4 years ago | 0

Question

How do I get an Expression to Use the Value of a Variable that was Assigned after the Expression was Defined?
Suppose I assign to a sym as follows: syms z f g Define f in terms of z f = 2*z Now assign a value to z z = sym(2)*1i; But...

4 years ago | 1 answer | 0

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How to change Axes values to 'String' instead of 'numbers' on Simulink Scope?
Make the signal input to the scope a Simulink Enumeration type.

4 years ago | 1

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How to create a vector of symbolic variables with specific labeling
v = [1 2 3 5 7 9 10 12 18 29]; vsym = sym('x',[v(1) v(end)]); vsym=vsym(v)

4 years ago | 0

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speed up integrating the same function over many overlapping intervals?
In your question you said that fn is continuous. If it's sufficiently smooth, ideally with continuous first derivative, you can ...

4 years ago | 0

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Fourier Transform in terms of frequency instead of angular frequency
WRT to the first part of your question, the answer is yes. The parameters of the Fourier transform can be set via sympref syms ...

4 years ago | 0