Answered
Generate waveform using basic matlab code
Hi @Abhibrata Adhikary The given waveform is a piecewise smooth function, and it can be constructed as follows: t = 0:0.1:2000...

4 years ago | 1

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Answered
How we can give input to ANFIS
Hi @Gagandeep Kaur Maybe you can try something like this: IN = [in01(:) in02(:) in03(:) in04(:) in05(:) in06(:) in07(:) in08...

4 years ago | 0

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How to build the sensor subsystem in SIMULINK like this video ?: https://www.youtube.com/watch?v=qhIjIu-Zk10&list=PLn8PRpmsu08pQBgjxYFXSsODEF3Jqmm-y&index=6
Hi @Nam Nguyen I guess the video in the YouTube link is removed. It is not the end of the world if you can't model a sensor sys...

4 years ago | 0

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How to reduce the simulation running time when fuzzy block gets included?
Hi @MALARVILI S I guess that your designed Fuzzy System is a Mamdani-type FIS, and it has too many Rules for the program to eva...

4 years ago | 1

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Answered
How to combine two fuzzy inference system in Simulink?
Hi @Swathi T I don't know how your Rules and FIS work, but you can try combining both FIS blocks in the additive way: Also, ...

4 years ago | 1

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Answered
How to Code Math Equation in Matlab.
Hi @bob Do you wish to learn only the specific code for solving the Heat Equation? Or, do you want to learn MATLAB from scratc...

4 years ago | 1

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Answered
i have unstable second order system and trying to make it follow square wave using reinforcement learning but the agent doesn't converge
@farouk I don't know how many iterations your RL will take to stabilize the system and track the square wave. But you can proba...

4 years ago | 0

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Trying to code a state space modelling for thrust vector control of a rocket. I keep getting Error using plot, Invalid Data Argument, please help
@Chinmay Kundapur, alternatively, you can directly write the color code straightaway. Iyy = 2.186e8; m = 38901; ...

4 years ago | 0

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how to draw graphs for optimal control
Hi @mallela ankamma rao Do expect plots like these? test = -1; % Test variable; as long as variable is negative ...th...

4 years ago | 0

Answered
How to solve system of Coupled nonlinear 2nd order ordinary differential equation in MATLAB?
@Sandip, Rearrange the equations in these forms and then substitute Eq. (3) into Eqs. (1) and (2). Try settle the math ...

4 years ago | 0

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How do I solve this system of equations using matlab
Hi @Ryan Boulden Unable to solve because there are 8 variables, but only 4 equations. , , , , , , ,

4 years ago | 0

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Multiple degree of freedom spring mass damper system using ode 45
Hi @Ryan Boulden The simulation runs. t = linspace(0, 10, 1001); ic = [0, 1, -1, 0]; [t, x] = ode45(@(t, x) odefun(t, x), t...

4 years ago | 0

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PID controller and PID tuner for a SIMO system
Hi @Mikel Your system is . If you algebraically design as , then the closed-loop becomes . Since you didn't specify the...

4 years ago | 2

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Answered
Alternative to the Differential block
Hi @Joe Jones You can try the Robust Exact Differentiator Block: http://www.reichhartinger.at/

4 years ago | 0

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plotting predator-prey model and its phase portrait
Hi @Krtin Kala If you want to plot the phase portrait, you can try using the numerical approach. % Parameters A = 2/3; B = 4...

4 years ago | 2

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Answered
How to show plot in interval of 3?
Hi @Ara Here is an example to use ax.XTick: x = linspace(0, 24, 2401); y = 30*(sin(2*pi/24*x) + 1); plot(x, y, 'linewidth', ...

4 years ago | 2

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Answered
How I can give condition & plot the solution of this differential equation. . . . . . . Please Guide
Hi @DEEPAK KARARWAL Giiven the parameters, it seems that if you select initial values and , the boundary values are satisfied....

4 years ago | 0

Answered
Can anyone help me in getting this graph using the attached equation (16).
Hi @Nudrat Sufiyan Guess you need to type out this equation and insert the parameters Example only, not true equation. ...

4 years ago | 2

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Answered
Can Someone help me with this Size error? I am working on Fuzzy Logic controller of Fuel cell and when i place Fuzzy Logic on Voltage it gives me this error
@Muzammil Naeem Update 26 Jul 2022: There are two inputs going into your FINALFANFUZZY.fis However, you connect the inputs...

4 years ago | 0

Answered
State and Output Function of a nonlinear dynamics to use is NMPC
Hi @seyyed Erfan ghoreyshipour The axial-flow pump system is governed by this equation: . So, the State variable in this equa...

4 years ago | 0

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Answered
How to Get Second Derivative in ode45 solver?
Hi @ercan duzgun You don't need to..., because you can see the elephant in the room (not sure if this is the correct metaphoric...

4 years ago | 2

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Answered
How can I numerically solve an equation with a sum of exponentials with parameters to the exponent?
Hi @IRENE TRENTA Let's test if this numerical method is simple enough or not. This method requires an initial guess. fcn1 = @(...

4 years ago | 2

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Answered
How to use switch case with PID controller?
Hi @nisha bhatt I think the switch looks like this: Since there are two 's, I guess you will need two PIDs.

4 years ago | 0

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how can i build logic in simulink model when statement is if output >=1 then the input should change its value to 0. by using feedback control loop system?
Hi @Rakesh Singare I see the piecewise function as the mathematical equivalent to the logic. For example: x = linspace(-3, 3, ...

4 years ago | 0

Answered
solving a differential equation using ode45 but the problem is i didn't get what i expected.
@SAHIL SAHOO Nothing wrong with code. The ode45 produces the solution based your given equation and input parameters. However,...

4 years ago | 1

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Answered
Ordinary differential equation, transforming into a single ODE
Hi @greg I copied the code from https://www.mathworks.com/help/matlab/ref/ode45.html#bu3uj8b and pasted here. After some modi...

4 years ago | 0

Answered
How to plot a special plane x-y=5 with surf function
HI @Wei Wei, not exactly sure about the "special" thing. Do you expect something like this? [X, Y] = meshgrid(-1:2/40:1, -5:5/4...

4 years ago | 0

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I need to know the order of solution vector i-e how solution is stored in solution vector of coupled 2nd order differential equations
@Haseeb Hashim, Aha, I see. You will have to remove the semicolon at the end of this line [VF,Subs] = odeToVectorField(Eq1, E...

4 years ago | 2

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Answered
How to find x values of specified y point on the graph ?
Hi Zack, You can use <https://www.mathworks.com/help/matlab/ref/interp1.html interp1> technique.

4 years ago | 0

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solving a single differential equation by using ode45, but it can't solve should I write something else.
@SAHIL SAHOO, based on the ODE in this image the output probably becomes like this: ti = 0; % inital time tf = 1...

4 years ago | 1

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