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how to access variables from simout - simulink simulation running programatically
Try this %% Data sent to Workspace toWksData = out7_1_1.simout; or this toWksData = get(out7_1_1, simout);

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can't write "hat", "tilde", "bar" in the title of the figure
I have problem with the GUI in past releases. I usually type out the syntax on the Command Window. title('$\hat{\theta}_{estim}...

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How to plot and find zeros of a complex polynomial?
Hi @simran I am unsure whether a symbolic approach exists. However, to use the fsolve() function, you need to provide initial g...

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Fuel cell system efficiency increasing at increasing altitude
Hi @Vyom Desai We are uncertain where to begin in reviewing the code, as all the essential calculative steps for determining sy...

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find the minimum of polynomial.
For a two-degree polynomial (quadratic) in the form of "y = ax^2 + bx + c", the formula to find the minimum value is: min = c - ...

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Simulink summing block - how to get negative input at the top of the summing block?
Hi @Kenny Enter this:

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How to use the magicformula as a MATLAB function in simulink
There are two versions of the 'Magic' formulas. Can you mathematically derive from their outputs? If so, you can write the der...

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Finding the points where Bessel functions are equivalent
Hi @Matthew I revisited your approach using vpasolve(), but I provided an initial guess that is close to the solution, as illus...

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Finding the points where Bessel functions are equivalent
Hi @Matthew You might consider approaching the problem as finding the minimum point of a convex function. I have used both ga()...

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How to find the Linear Analysis Tool
Most likely because you haven't installed the Simulink® Control Design™ tool/software.

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Simulink Threshold with action
Naturally, I would expect that the input signal evolves over time and that the thermostat-like controller performs a switching a...

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I made it pretty far in writing the code for an assignment. However, I am struggling to figure out how to finish the code. Can anyone show me how to finish it?
Hi @Antonio I believe that your app should allow users to input their parking start date-time and exit date-time, almost simila...

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Transport delay generate to matlab function
Hi @Enes I applied the modulo operation to the triangular membership function from the Fuzzy Logic Toolbox to create the equila...

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I want to take the square root of a transfer function
Hi @Calum Unlike plotting time responses using the step() and lsim() functions, or first solving the ordinary differential equa...

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Too many input arguments
Previously, the symbolic is undefined in the z(t) function. clear all; close all; syms k t z0=2; r=0.01; K=100; u=0.75; B=1...

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plotting coordinates vs. time and i need my time to run with or without loop function repeatedly.
Hi @shane Generally, coordinates can be specified in 2D (planar) or 3D (spatial) formats. If you wish to plot the spatial coord...

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How to code a cantilever beam with lumped spring mass damper on the free end
Hi @Shrijit Generally, you can model beam dynamics using Euler-Bernoulli theory for long beams or Timoshenko–Ehrenfest theory f...

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ask intergral and derivate
Hi @승표 I used the ordinary differential equations (ODEs) from this PMSM example because they are similar to your case. Specifyi...

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multiple equations to steady-state system to transfer function
Hi @erin Part 1 of your code does not work because the tf() function from the Control System Toolbox is primarily used for crea...

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Use of functions ctrb and poly
No error message generated. You should provide yours to find out the actual issue. A = [ 0 1; -1 -2]; B = [ 0; ...

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How to find rise time in fractional order system, give matlab code?
Hi @SARAVANAN Once you have generated the response signals y(t) from the fractional order system, use the following syntax to d...

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deriving a transfer fuctnion
Hi @Plato This is a homework question. However, you can use the feedback() function to compute the closed-loop transfer functio...

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Distinguish the different curves and identify the points corresponding to each way
Hi @rana I now understand that you are seeking advice on graphically displaying the data. Here is an example of what I consider...

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How do you use To Workspace? (DC Shunt Motor)
The To Workspace block logs the signal connected to its input port to the workspace. To access the data logged by a To Workspace...

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Why doesn't Iref_sd = 0 when 0 is input to Tref and ωm in the ACIM control reference?
Hi @中嶋 Your and according to mathematical model of the AC Induction Motor (ACIM) Control Reference block, if the condition is...

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how to input a function as a parameter of a function
Hi @Tony Cheng Something like this: %% Script to call 'fMin1D' x0 = [1, 1]; [x, fval] = fMin1D(x0, @quadfcn) %% Minimize...

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How to implement an LQR controller when the system's state variables and control inputs have different units?
Hi @준호 Could you provide a simple code example involving lqr() to illustrate your concern? There should not be any issues with ...

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Simulink physical sys is stable even the Matlab model for the same sys is unstable
Hi @mohamed If at least one pole of the closed-loop system has a positive real part, the system is considered unstable. You may...

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How to implement MPC when the number of states is greater than the number of outputs?
Hi @준호 The MPC Controller still functions effectively even when the number of states exceeds the number of outputs. I have made...

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Stepinfo provides wrong rise time using [0, 0.63] limits for non minimum phase systems
Hi @Ken Buckholtz Here is another approach to estimating the user-defined rise time: by defining the 'RiseTimeLimits' and ident...

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