Community Profile

# A Jenkins

Last seen: 5 mois ago Active since 2012

All

#### Content Feed

View by

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...

presque 2 ans 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...

environ 3 ans ago | 1

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

plus de 6 ans ago | 1

| accepted

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] ...

plus de 6 ans ago | 1

| accepted

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...

plus de 6 ans 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...

plus de 6 ans 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...

plus de 6 ans ago | 0

| accepted

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

plus de 6 ans 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?

plus de 6 ans 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...

presque 7 ans ago | 0

| accepted

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...

presque 7 ans 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?

presque 7 ans ago | 1

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

presque 7 ans ago | 0

| accepted

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...

presque 7 ans ago | 0

| accepted

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

presque 7 ans 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

presque 7 ans ago | 0

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

presque 7 ans ago | 0

| accepted

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...

presque 7 ans ago | 0

| accepted

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....

presque 7 ans 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 ...

presque 7 ans ago | 0

| accepted

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

presque 7 ans ago | 0

| accepted

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

presque 7 ans 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...

presque 7 ans 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. ...

presque 7 ans ago | 1

| accepted

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...

presque 7 ans 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>....

presque 7 ans ago | 1

| accepted

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

presque 7 ans ago | 0

| accepted