Community Profile # A Jenkins

Last seen: 12 mesi ago Active since 2012

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Bode Plot Display All Stability Margins
Adam Danz's method got me started, but didn't quite get me there, and I ended up using this one: (2019a) sys = rss(5); h = bo...

oltre 2 anni ago | 0

Very slow when change current directory.
I had this problem on 2017a. It took minutes to change directories. Then I closed some of the open files in my editor and it g...

circa 4 anni ago | 1

So why doesn't this work?
z=y(X(1):X(4),3)

circa 7 anni ago | 1

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getting actual numbers instead of symbolic results when using solve
Why do you say it doesn't work? I see your answers returned as a structure: >> vals vals = lambda: [1x1 sym] ...

circa 7 anni ago | 1

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Removing repeat displays in Matlab
function y = fcn(u) persistent previous_u if isempty(previous_u) previous_u=0; end if u >= 0.5 && previ...

oltre 7 anni ago | 0

How can I modify the circuit to obtain constant power?
There is bound to be some numerical error in your simulation because you are finding a <http://en.wikipedia.org/wiki/Numerical_m...

oltre 7 anni ago | 0

Runing the simulink with different step time
Use a From Workspace block with a time series, or an array of time and signal values. There are <http://www.mathworks.com/h...

oltre 7 anni ago | 0

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How can I parametrize the "From Workspace" block in Simulink?
set_param([sys '/From workspace'],'VariableName','x1')

oltre 7 anni ago | 0

how do i make this pv model work
Close the circuit. You say you have a source of current, so where does that current go? Perhaps a resistor as a load?

oltre 7 anni ago | 0

How to use message box?
msgbox(sprintf('Failure is at %d',failure)) or maybe you would rather put it on the plot directly: annotation('textbox...

oltre 7 anni ago | 0

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Issues when multipling and summing very small values in a matrix
Your code as written only sums the value of the last column of _massplume_area.*constant_. Did you mean datamatrix(:, co...

oltre 7 anni ago | 1

How to Determine the current/next Simulink TimeStep when running a simulation?
Are you looking for the <http://www.mathworks.com/help/simulink/slref/clock.html Clock> block?

oltre 7 anni ago | 1

How to plot a for loop?
change elseif x>=5 to elseif x(k1)>=5

oltre 7 anni ago | 0

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How to exit background program using MATLAB?
It would probably be better to have your program terminate itself. However, if you are on Windows you can kill it using _taskki...

oltre 7 anni ago | 0

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Solving system of 5 variable
<http://www.mathworks.com/products/sysid/ System Identification Toolbox>

oltre 7 anni ago | 0

Error using quad "Error using quad (line 75) The integrand function must return an output vector of the same length as the input vector."
There are two powers in that line and you have only replaced one. @(q,n0)((eq(q)) *^* 2+2*U*n0*(eq(q))) *.^* 0.5

oltre 7 anni ago | 0

Outputting numbers into a single array when using a double for loop?
T(n)=max(x)

oltre 7 anni ago | 0

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How to increase count for different counters in if loop.
You are comparing the entire _itemtype_ array to the numbers 1 and 2. Perhaps you want to compare just one element of the array...

oltre 7 anni ago | 0

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Simulink interpolation using 4 different vectors
As it says, (1) use coder.extrinsic to add support for _griddata_ (2) Specifiy the size of the output data of your block....

oltre 7 anni ago | 0

Invalid dimensions between blocks in Simulink
Do you want a 1x5 array of different random numbers, or the same 5 times? Either way, if you have u=[1x5] and Bd=[5x2], then ...

oltre 7 anni ago | 0

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How to create an array of numbers in simulink?
Put rand(1,10) in your constant block.

oltre 7 anni ago | 0

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The simulink simulation slows down when I use a switch, it does not give any error but it stays at .5 second indifinitely!

oltre 7 anni ago | 0

Power system reliability with renewable DGs
For Simulink, take a look at <http://www.mathworks.com/products/simpower/ SimPowerSystems>. However, I think non-Mathworks pr...

oltre 7 anni ago | 0

Crash of a single case terminates the whole optimization process
You can use a <http://www.mathworks.com/help/matlab/matlab_prog/use-trycatch-to-handle-errors.html try block> around your code. ...

oltre 7 anni ago | 1

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Major confusion for loops - precision not acquired
Play around with _vpa()_ and _digits()_ and make sure to read the help files on <http://www.mathworks.com/help/symbolic/precisio...

oltre 7 anni ago | 0

Why does this matrix have zeros for all but one of the numbers?
Be careful with <http://www.mathworks.com/help/matlab/matlab_prog/array-vs-matrix-operations.html scalar and vector operations>....

oltre 7 anni ago | 1

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When will the Student version of Matlab 2014b or 2015a be out?

oltre 7 anni ago | 0

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