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Solving a System of Trig Equations
Hi @Michael Boyte Back to the basics when solving the inverse kinematics problem. The kinematics of a 2-link robot arm (where t...

alrededor de 4 años hace | 1

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Optimization of Logistic Function Variable K for multiple Inputs Simultaneously
Hi @Ezra Sutter Is it allowed to fit using other type of function? promAngles = [146.7589 115.7733 98.1666 66.8909 41.9...

alrededor de 4 años hace | 1

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How to generate following signal using MATLAB script file? signal s(t) is changing its value in every 20 seconds
Hi @Pritesh Patel, This puzzle needs a little mental calculation to think. Not sure what happens after 80 s. syms t u00 = hea...

alrededor de 4 años hace | 0

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ode45 for Higher Order Differential Equations
Hi @d A little fix on the system of 1st-order ODEs. f = @(t, x) [x(2); x(3); x(4); 1 - x(1)^2 - 6*x(3)]; tspan = 0:0....

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Lyapunov exponent function submitted by community
Hi @Don If your experimental data is not large, then you can test lyapunovExponent() here to see if it works for your case. ht...

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I wonder what is difference between SISO and MIMO.
Hi @Junu Lee SISO is the acronym for Single-Input and Single-Output. MIMO is the acronym for Multiple-Input and Multiple-Outpu...

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How can I force Gaussian profile to fit peaks completely?
Hi @Naif Alsalem You can try specifying the bounds in fit options to help the algorithm to fit better... options = fitoptions(...

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Can you help me with this task?
@Saba Bukhnikashvili As a beginner, maybe you can do something like this in just 3 simple steps: Write a system of first-order...

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how to solve this
The Area computed by MATLAB is as correct as the radius given by you. r = pi^1/3-1 A = pi*r^2

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Solve analytically an system of coupled diffrential équation with Matlab
@Thomas TJOCK-MBAGA, not sure why you want to look for the analytical solution, especially with the given initial condition. Sin...

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genetic algorithm code with more than three variables
Hi @huda nawaf Maybe this example would give you the basics of using the genetic algorithm (GA) to minimize a multivariate func...

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How to determine the start time and the end time of the signal
Hi @Yew Jen Chong Alternatively, try this. The findchangepts function actually works. T = readtable('https://www.mathworks.com...

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how can i write the RLC equations? (image)
Hi @Lizeth Armida García Valle You can get the required RLC equations using odeToVectorField function. However, for education p...

alrededor de 4 años hace | 0

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How do I design a close-loop controller on my simulink of piezo bender of energy harvester
Hi @Fajwa Noor Generally, the optimization should come later once you have successfully designed the basic structure of the mat...

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Minimize problem using PSO
Hi @Reji G It seems that the function does not have any global minima. [X, L] = meshgrid(1:3/40:4, 0.1:0.3/40:0.4); Y = (20...

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I couldn't do the 2nd question in my project homework
You should at least provide the model of the harmonic drive in order to work on Q2. If you do it properly, then it is possibl...

alrededor de 4 años hace | 0

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DGL of a centrifugal governor
Hi @Alexander Reiff Equilibrium positions Phase portrait: [X, Y] = meshgrid(-3*pi/2:3*pi/14:3*pi/2, -2*pi:4*pi/14:2*pi)...

alrededor de 4 años hace | 1

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Luapunov exponent for days
Hi @Don Have you tried the built-in lyapunovExponent(X,fs) function on your experimental data? One example is provided in the ...

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fuzzy logic designer expert is required.
Wa-Alaikum-Salaam @mansoor khan. If this is about Multi-Criteria Decision-Making (MCDM), then you can try applying the TOPSIS ...

alrededor de 4 años hace | 0

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Plot distance difference between two orbits
Hi @Jes Found the Haversine formula which I think you can apply to calculate the distance between them. Both asssi.mat and gff...

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How to solve a second order nonlinear differential equations with two other function in it
Hi @Sudipta Mukherjee 3rd Edit: The simulation. I re-scaled and so that you can see the inputs and options = odeset('Event...

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How to draw a 3D circle that is tangent to two lines
Hi @hadis ensafi This problem needs a little mathematics if there is no built-in function to find that. If the two tangential p...

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Please my Simulink result graph fluctuates but it always ends up constant at 1 with or without an actuator force or even when I change some parameters. What can I do?
Hi @Tobechukwu The response is most likely caused by the two factors: the Unit Step function, generated by the Step block. th...

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Asking about help in Fuzzy inference system?
@Abdelrahman Samy Most likely that the input trnX that you passed into the evalfis function is of some other class (not double ...

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Using normrnd for generating natural values (without decimal values)
@Sahar khalili How about this data set {25, 26, 27, 27, 28, 29}? A = [25, 26, 27, 27, 28, 29] M = mean(A) S = std(A)

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How to plot a vector map for a differential system(in ode45) with a switch condition ?
Hi @Vignesh Ramakrishnan Since you didn't provide the code, the following involves some guesswork in an attempt to reproduce/du...

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How would you make a rectangle input?
@Matthew Pollard Ah... That is not strictly a rectangular signal, but is more like a staircase signal, which can be a little tr...

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How to solve a second order nonlinear differential equations with a step function
Hi @Sudipta Mukherjee Edit: The is not signum-based, and the constraint for the velocity is defined in an Event function call...

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Problem with Nonlinear Least Squares fitting
@Jason Yee I don't see anything technically wrong with code. Probably the choices of the lower and upper bounds are 'too vast'....

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Nonlinear Differential Equation Solving
Hi @Nuri Efe TATLI The analytical solution probably does not exist. syms y(t) A B C D eqn = A*diff(y,t,2) - B*y + C == D*cos(...

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