Answered
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...

21 days ago | 0

Answered
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 - ...

21 days ago | 0

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

22 days ago | 1

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Answered
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...

22 days ago | 0

Answered
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...

22 days ago | 0

Answered
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()...

22 days ago | 0

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

23 days ago | 0

Answered
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...

24 days ago | 0

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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...

24 days ago | 0

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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...

24 days ago | 1

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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...

24 days ago | 0

Answered
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...

25 days ago | 0

Answered
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...

25 days ago | 0

Answered
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...

25 days ago | 0

Answered
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...

26 days ago | 0

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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...

27 days ago | 0

Answered
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; ...

27 days ago | 0

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Answered
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...

27 days ago | 0

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Answered
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...

27 days ago | 0

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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...

1 month ago | 2

Answered
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...

1 month ago | 0

Answered
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...

1 month ago | 0

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Answered
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...

1 month ago | 0

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Answered
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 ...

1 month ago | 0

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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...

1 month ago | 0

Answered
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...

1 month ago | 0

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Answered
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...

1 month ago | 0

Answered
Converting a nonlinear state equation into state dependent matrix form
Hi @Md Sabbir Haider Based on your descriptions, it is entirely acceptable to use the nonlinear state equations for simulation ...

1 month ago | 0

Answered
Stepinfo provides wrong rise time using [0, 0.63] limits for non minimum phase systems
Hi @Ken Buckholtz Rise time is a non-standard performance measure. By default, in MATLAB, rise time is defined as the duration ...

1 month ago | 0

Answered
please ,write a code to 3D plot this file .
I am unsure about the specific type of 3D plot you require. I reviewed your previous questions and found that you have already l...

1 month ago | 0