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Peter O


Automotive Industry

Last seen: 23 giorni ago Active since 2011

Primarily specializing in electrical systems and optimization for MATLAB and Simulink.

Programming Languages:
Python, C++, C, Javascript, MATLAB, HTML, CSS, Arduino, Shell, Fortran

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The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

3 mesi ago

Answered
How to plot recursive definition in Matlab/Simulink?
Sure. Use a while loop and call functions for each. However, for this problem, consider using a for loop. It will be much more e...

4 mesi ago | 0

| accepted

Answered
How to simulate a limit switch in SIMULINK?
Try something like this. It's a little quickly done, so I'm sure there's room for optimization or elegance, but this works. You...

4 mesi ago | 1

| accepted

Answered
How to create pulsed sine waves in SIMULINK - that turns off at intervals?
Assuming that the sine wave is allowed to restart at an arbitrary position, I think the cleanest way might be route the sine wav...

4 mesi ago | 0

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Answered
random select n elements from n arrays
With a little programming and a for loop you can handle all possible combinations. If you want to be able to draw repeated ele...

4 mesi ago | 0

Answered
I am not able to understand how to implement this into simulink.
Fortunately, that current map looks very smooth. Consider using the 2D lookup block: https://www.mathworks.com/help/simulink/slr...

4 mesi ago | 0

| accepted

Answered
how to do model prediction using python in matlab
So it looks like it's launching into Python fine. A couple things to try: Standard Python or Anaconda? Sometimes Anaconda doesn...

5 mesi ago | 0

Answered
Derivative of state '1' in block 'model4/PMSM /Integrator' at time 1.09996 is not finite
This error can occur when the feedback loop creates positive feedback. As you step through time your derivative input into the i...

5 mesi ago | 0

Answered
Multi phase motor with more than one FEM-Parameterized Rotary Actuator ?!?
Federico. A two or three phase machine is better expressed using a machine model such as the ones found in the Simscape Electri...

5 mesi ago | 0

Answered
Problem with fmincon in case of using variables have various order
Ghost, Good observations. Yes, c has the greatest sensitivity. Sometimes it's possible to get a better fit by massaging the in...

5 mesi ago | 0

Answered
Segmentaion fault while calling Python script using system()
A couple thoughts: Regarding your python call: are you on a recent version of MATLAB? You can call the script directly using MA...

5 mesi ago | 0

Answered
How to fit integral function
Hi, A couple things I notice: integral2 expects max and min bounds, but you're passing it the entire grid. Instead of x and y,...

5 mesi ago | 0

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Answered
store data from different structures into one variable
Hi, Yes this is very possible to do. Are are 320 values stored as a vector in the acc field? If so, try using the arrayfun to l...

5 mesi ago | 0

| accepted

Answered
Move diary in file to newfolder
Hi Armin, Try this at the start of your code. You may need to ensure the path exists before creating the diary file. You should...

5 mesi ago | 0

| accepted

Answered
Start Simulink Simulation non-blocking with outputs
Hi, Yes sim is a blocking command. You can configure a simulation to dump its output to the workspace and access it from there....

5 mesi ago | 0

Answered
Detecting a local minima within a specific splice of data
I'm very unfamiliar with ECGs. Two ideas: Is the Q peak always the "lowest"? Flip/Invert the signal to search for the peak of Q...

5 mesi ago | 0

Answered
Hi, I'm having trouble solving a non-liner 2nd order ODE, could someone help me? I'm not able to assemble the code.
Ah, this is a nice heat transfer homework problem! The function you're looking for in MATLAB for coding up the solution is calle...

5 mesi ago | 0

| accepted

Answered
Increasing datatip display precision (MATLAB 2019a)
Quick and dirty way (works in 2021, I think should still work in 2019): Create a data tip and right-click on it. Edit content a...

5 mesi ago | 0

| accepted

Answered
missing parameter to change fixed step size via code
CurrentTimeStep = get_param(gcs, 'FixedStep'); set_param(gcs,'FixedStep','0.1') gcs is a MATLAB call for "get current system"....

5 mesi ago | 0

| accepted

Answered
From workspace does not receive data properly.
Are you using the auto solver? What is the smallest timestep taken at the start? It's possible that the solver needs to be confi...

5 mesi ago | 0

Answered
Accessing specific values in every matrix in a cell array
Sure, use cellfun: A = {[1,2,3],[4,5,6],[7,8,9];[10,11,12],[13,14,15],[16,17,18]}; B = cellfun(@(x) x(3), A) disp(B)

5 mesi ago | 1

Answered
Use EV Battery Cooling System
It sounds like the file is not on MATLABs search path. https://www.mathworks.com/help/matlab/matlab_env/what-is-the-matlab-searc...

5 mesi ago | 0

Answered
How do you create a matrix Aij where each value is determined by a formula?
It sounds like a for loop would build your matrix nicely: n = 2000; sz_i = n; sz_j = n; A = zeros(sz_i, sz_j); % Preallocate...

5 mesi ago | 0

Answered
Simulink asynchronous generator voltage input clarification
Hi Abd, For an induction machine to operate, you must be able to generate a rotating field on both the rotor and stator. The fi...

5 mesi ago | 1

| accepted

Answered
What is the difference between in64, int32, and int8. Are there anymore 'int' functions? (int means integer right?)
Difference between %d, %f, or any other %? These are formatting control codes. %d prints a number in decimal (base 10) format, ...

circa un anno ago | 0

| accepted

Answered
How to display a Y value
For interactive use of the graph, consider use of the datatips functionality. In R2018 and above, if you hover your cursor over ...

circa un anno ago | 0

| accepted

Answered
index exceeds matrix dimensions and the toolbox code error
I'd guess that n is larger than the size of P. In the first couple lines it seems that P only gets allocated if the swing angle ...

circa un anno ago | 0

Answered
How to apply modifiers to error messages
You've almost got it. The TeX formatting is correct. You need to include the interpreter and modality of the window in a struct ...

circa un anno ago | 1

| accepted

Answered
How to impulse response including unit step function
The Heaviside step function is defined Substitute a logical check on t for u(t). Should be extendable to a shifted step fu...

circa un anno ago | 0

Answered
How Do I Determine which Group Variables Correspond to the Results of SplitApply
Consider using the second argument output from findgroups? [G,ID] = findgroups(A) also returns the unique values for each group...

circa un anno ago | 0

| accepted

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