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Paul


Last seen: Today |  Aktiv seit 2011

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Beantwortet
How to get z transfer function from difference equation?
Hi Vivianne, One workflow would go like this: Define the variables and signals. Note that x is a function of k syms y(k) z x(...

etwa 10 Stunden vor | 0

Beantwortet
Sliding mode control simulink
Hi KAI, Do any of the integrators have a non-zero initial condition? Also, might want to consider using a variable step solver...

ein Tag vor | 0

| akzeptiert

Beantwortet
Having symbolic in a Matrix
Hi Felis, I didn't run the code because I don't know what inputs to provide. Does changing Z2 to a sym object solve the problem...

4 Tage vor | 0

| akzeptiert

Beantwortet
Find a specific characters in a string
Hi Miriam I'm not quite sure what you're looking for. However, transforming everything to strings might offer a path forward vi...

4 Tage vor | 0

Beantwortet
How to find index of string inside a structure of cell arrays
Hi Andrew, Is this what you're looking for? load(websave('MyStruct.mat','https://www.mathworks.com/matlabcentral/answers/uploa...

4 Tage vor | 0

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Beantwortet
Display Block shows truncated data
Hi Gajana, The warning is not telling the full story and may actually be incorrect. Fron the Display block doc page: "The Disp...

5 Tage vor | 0

Beantwortet
How to find number of input and output ports of an unknown simulink model ?
Hi Shiv, I started out with this model with three subsystems. Then I ran this code: % Handles to the subsystems subsystems...

6 Tage vor | 1

| akzeptiert

Beantwortet
How to find cumulative distribution function from a given data set(vector)
Hi Shankul, I'm not sure what "I want the cdf vector" means. If that means the data that forms the cdf plot on the graph, then ...

6 Tage vor | 0

| akzeptiert

Beantwortet
Problem passing sine wave through if statement
Hi Matthew, The "Port 1" referenced in the error message is the first output port, not the input port. All output ports from th...

7 Tage vor | 0

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Beantwortet
What is the physical interpretation of sos in Zp2sos function?
Hi Andi, Addresing the second part of your question: " why we need to do this" filtfilt will accept either transfer function (...

7 Tage vor | 0

Beantwortet
why does my data kick up at the end after doing ifft(X)
Hi Joanne It will be easier for people to help if you post the data. Use the paper clip icon to attach it to your question as a...

7 Tage vor | 0

Beantwortet
How to vectorize a complex function?
Hi Babak, Here is a one line solution. Whether or not it's more efficient/effective/clearer than the loop is an open question. ...

7 Tage vor | 0

Beantwortet
Reduce length of sum of products of symbolic variables
Hi Moritz, Would you mind explaining why it's necessary to get the expression into a particular form? Recreating the expressio...

9 Tage vor | 0

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Beantwortet
Not able to use the if condition as desired in simulink
The outputs of an If block can only drive If-Action subsystems. At a minimum, the limiter blocks need to be wrapped inside If-Ac...

9 Tage vor | 0

Beantwortet
Plotting the frequency response of a bandpass filter around a frequency fc
The code as implemented uses the form of freqz with the w input in normalized frequency in units of rad. The w vector on input r...

9 Tage vor | 1

| akzeptiert

Beantwortet
How do I use methods from a class that works in matlab and use it in simulink?
How will the object instances be used in Simulink? This blog post and its follow-ups may be of interest.

10 Tage vor | 0

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Beantwortet
Is there a zpk block in simscape?
Zero-pole-gain block in Simulink, don't know if there is a specialized or alternate version in Simscape.

11 Tage vor | 1

| akzeptiert

Beantwortet
Offset in filtered data when using filtfilt() Function
Thanks @Jan The filter, d, does not have unity gain at dc. fc = 0.4; d = designfilt("lowpassfir", 'PassbandFrequency', fc, 'S...

11 Tage vor | 1

Beantwortet
complex ifft output for hermitian input
Hi Md. I didn't inspect the whole code, but did notice that the calcuation of timeResp seemed to have the ifft/ifftshift operat...

11 Tage vor | 1

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Beantwortet
How can I evaluate a complex definite integral?
Hi Valentin, Shouldn't the lower bound on the integral be fg2, not 0? Don't see how the reult will be 0.2952. The integrand is ...

11 Tage vor | 1

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Beantwortet
minreal tolerance not respected
Hi Daniel, As best I can tell after sifting through the code, tol is generally compared to the distance between the zero and po...

11 Tage vor | 1

Beantwortet
Energy and Power of a Piecewise Function
Hi Iakovos, Try using piecewise to simplify things. syms t real x(t) = piecewise(-3 <= t <= 0, cos(sym(pi)*t),0 < t <= 2, 2, ...

12 Tage vor | 1

| akzeptiert

Beantwortet
DC gain for FIR high-pass filter using fir1
Hi Masao, Let's try the proposed methods. High-pass fir1 filter bhigh = fir1(500,5/750,'high'); [h0,w] = freqz(bhigh,1,0:.00...

12 Tage vor | 0

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Beantwortet
Plotting sin (x/x) function in terms of Mag(dB) over Frequency
Hi IFECHUKWU, sin(x)/x can take on negative values, for example x = 5*pi/4; sin(x)/x Taking the log10 (as neeed for dB, not ...

12 Tage vor | 0

| akzeptiert

Beantwortet
DSP/IIR filter butterworth
Hi Steven, Here is the original code (with minor changes) fpass = 2500; fstop = 4000; As = 95; Rp=3; fs=44100; %Data wp=(fpas...

13 Tage vor | 1

| akzeptiert

Beantwortet
nonlinear variable state space observer pole placement
Hi Bernd, Matlab assumes by default that all sym variables are complex, and this assumption can sometimes lead to unexpected re...

14 Tage vor | 1

| akzeptiert

Beantwortet
How to mean data of second column with respect to the similar element in the first column
Check out splitapply. Applies directly to this problem.

16 Tage vor | 0

Beantwortet
Problem with factoring a symbolic variable
If only one term contains Td_s, then syms T_u T_t T_s tau_u Tdd_u Tdd_t Tdd_s Td_u Td_t Td_s; eq = sin(T_s - T_u)*Td_s^2 + sin...

16 Tage vor | 0

Beantwortet
MATLAB Answers Wish-list #5 (and bug reports)
I wish that the Categories feature be much more useful. Check out hte categorization of this Question: Scroll over the right ...

17 Tage vor | 0

Beantwortet
Use Matlab Function Block to plot into figure created by Matlab Script
Hi Jannis, I got this model to work The code in the Matlab Function block is function y = fcn(u,t) persistent ax1 if ...

17 Tage vor | 0

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