Answered
Numerical error in simulink
Hi Junghyo Kim, Your question references "division by 0" but the error message has nothing to do with division by zero. The er...

2 years ago | 0

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Answered
Different integration results from int method in symbolic math toolbox
Looks like a bug in the computation of F2? syms x w; assume(x,"real"); assumeAlso(w,"real"); % integration y1=exp(-1i*w*x-x...

2 years ago | 1

Answered
Magnitude response of allpass filter - group-delay equalization of an IIR filter
Hi Jay, Here is the filter [be,ae] = ellip(4,1,40,0.2); f = 0:0.001:0.2; g = grpdelay(be,ae,f,2); % Equalize only the pass...

2 years ago | 0

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Answered
Converting 4th order IIR filter to SOS (second-order sections)
Does tf2sos provide the desired result?

2 years ago | 0

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Answered
Why is there no Integrator with data type single ?
How about using a Discrete Time Integrator?

2 years ago | 0

Answered
How do create a simulink filter if I have the impulse response
Hi Joe, Why not derive the transfer function H(s) as the Laplace transform of h(t), and then implement H(s) in the Transfer Fcn...

2 years ago | 0

Answered
Compute conditional mean from distribution
Hi Fredrik, If you just want to compute the conditional mean, why not just use the third expression for Conditional Expectation...

2 years ago | 0

Answered
Simulating a plant in Simulink
The Zero-Order Hold block with Sample Time parameter set to an expression that evaluates to the sampling period T does the sampl...

2 years ago | 0

Answered
Lookup Table in Simulink
Hi wafaa, If the area and volume are both represented by by 2D arrays of the same size, and if the length and width input break...

2 years ago | 1

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Answered
How to convert time varying state matrix to ss ?
ss and other dynamic system models in the Control System Toolbox only support linear, time-invariant, systems, so the A-matrix i...

2 years ago | 0

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Does the 'sigmaplot' function plot the minimum or the maximum singular values of a MIMO transfer function?
I think it plots all of the singular values that are not identically zero, unless the MagUnits property is set to 'abs', in whic...

2 years ago | 0

Answered
how to zero pad a vector to have the same amount of data as a vector with more data?
As of R2023b: paddata in_padded = paddata(in,numel(verb));

2 years ago | 2

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Why does C{1}(1) work but C(1){1} results in an invalid array index error in MATLAB?
C is 1x2 cell array C = {[1,2],'abc'} Curly brace indexing here "pops-out" the first element of C as an ordinary 1x2 vector C...

2 years ago | 0

Answered
How to interpret the frequencies on a symmteric FFT plot.
Hi John, The very short, and loose, answer to your question is as follows. Suppose we have a signal, like x[n] = cos(2*pi/N*k*n...

2 years ago | 0

Answered
What New Functions or Features in R2023B are of Interest?
New function svdappend sounds interesting. I wonder what typical use-cases might be? @Christine Tobler

2 years ago | 0

Question

What New Functions or Features in R2023B are of Interest?
I was reading this question where Steve Lord suggested using a function expmv that is new in R2023B. I went over to the Matlab R...

2 years ago | 2 answers | 0

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answers

Answered
What do the states in a series connection of a plant with time delay (approximated by pade approximation) represent ?
Hi Janki, "What do the first 2 states here represent? " Each state is the state variable of the state space realization of the...

2 years ago | 0

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Answered
Best practice: should a function return a row vector or a column vector
I just ran into a case where I had to make sure the output vector from a function had to have the same dimensions as a vector in...

2 years ago | 2

Answered
I want to perform inverse Laplace transform but my code does not seem to work
Hi Carlos, ilaplace assumes that all signals are causal, which wouldn't be true in this case if a < 0. Add the appropriate ass...

2 years ago | 1

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Answered
Bode plot of a 157 order transfer function
Hi Dongxu Guo, That's quite a filter! Using a tf for a for such a high order filter is not likely to work due to large roundin...

2 years ago | 0

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Answered
The normal "state space" and "discrete state-space" block in Simulink have different results
Hi Christian, If the simulation step size is fixed at 1e-6, then the inherited Sample Time of the Discrete State Space block is...

2 years ago | 0

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Answered
Proper way to call designfilt for filtfilt
The example above is a low pass, linear phase FIR filter. Maybe a simple delay as is implemented in lowpass is acceptable? Cuto...

2 years ago | 1

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Answered
MATLAB telling me there are no real values to my step response when there are
Hi Sophie, It looks like that message will come up when calling step with a tf input with complex coefficients h = tf(1,[1+1i,...

2 years ago | 0

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How to Obtain State Space Model from Bode Plot Data
Hi Muhammad, Here is the first part of the code: T2 = readtable('E7i_CSV.csv'); ...

2 years ago | 1

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Answered
Getting an equation from a signal transfer function
Hi Sifiso, Here is an example that might be helpful. Generate an input signal inputAudio = sweeptone(6,0.1); Fs = 44.1e3; N...

2 years ago | 0

Answered
How to avoid defining variable value with simulink.
No, this can't be done in Simulink, nor in the Control System Toolbox. With G1(s), G2(s), and H(s) define as symfun objects, you...

2 years ago | 0

Answered
Why I am not getting sample time in the discrete transfer function block.
Hi Gokula, The Discrete Transfer Fcn block is one of the Blocks for Which [Setting] Sample Time Is Not Recommended. Instead, Si...

2 years ago | 0

Answered
The problem is to obtain the eigen einergies of the Schrodinger equation for an array of l = 0:1: 5 and del = linspace(0,1,N)
hbar = 1; mu = 1;e = 1;De = 1;re = 1;alp = 0.01;N = 100; l = 0; del = 0; L = l.*(l+1); r = linspace(1,1.2,N);dr = r(2)-r(1); ...

2 years ago | 0

Answered
How do we choose matrices in state feedback control?
Hi Luc, For lqr, the B matrix multiplies the control input. As I don't know what the variables mean in your problem, I can only...

2 years ago | 1

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Answered
Why am I getting this error "Conversion to logical from sym is not possible." in line 18?
syms x syms y %f(x,y) = input("Enter the function of f(x,y): "); f(x,y) = x^4 + y^4 -2*x^2 + 4*x*y - 2*y^2; df_dx = diff(f(x...

2 years ago | 0

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