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tuning PID controller in simulink with actual hardware equipments
Hi @aakash dewangan If the transfer function is unknown, and the system is relatively simple, perhap the model-free extremum-se...

oltre 3 anni fa | 1

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Help with formulating conditional logic.
Hi @Jeffrey Lewis There are a few ways to do it. But since you have written the data into the code, I think probably the simple...

oltre 3 anni fa | 1

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State-Space Matrices
Hi @Aysel Alimirzayeva It's because of negative feedback. The LQR function only computes . Making a substitution

oltre 3 anni fa | 2

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runge kutta for 2 order ODE
Hi @Rio Bratasena Assuming that the symbol is the Dirac impulse. please check if the following responses are expected wh...

oltre 3 anni fa | 0

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Calculating system bandwidth using Function "bandwidth"
Hi @Alireza Aghdaei The function can distinguish from the input type. One requires a Dynamic System Model, the other requires a...

oltre 3 anni fa | 1

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how does matlab simulate electric field
Hi @abdullah Typically, the quiver() function can be used. You can also find a very good example on the simulation of Electri...

oltre 3 anni fa | 3

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Solve system of equations graphically
Alternatively, you can also do like this: Solve or plot this polynomial: x = -2:0.01:2; y = x.^4 - 6; plot(x, y), gr...

oltre 3 anni fa | 0

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What block is hydraulic/liquid on/off valve in Simulink?
Hi @Busuyi 2nd Edit: Based on your sketch, it should be a Gate Valve. https://www.mathworks.com/help/hydro/ref/gatevalve.html...

oltre 3 anni fa | 0

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i need help to find impulse response of system h(t) at time t
Hi @Rushit Bhavsar I used the impulse() method. but you can try using the expm() method. Look up the example and verify with th...

oltre 3 anni fa | 0

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Does the fuzzy inference system (Mamdani) use Forward Chaining or Backward ?
Hi @Sarah IF you understand that the Fuzzy System provides means of reasoning by inference in order to decide the truthness of ...

oltre 3 anni fa | 0

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Can anybody give me the idea for implementing PID control for dc motor using state space equations through ode45 solver?
@MOHAMED ASWER Not sure how your DI/dc motor system, but I think the following example should give you the basic idea. tspan ...

oltre 3 anni fa | 0

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Find AIC, AICc, BIC for ODE system
Hi @TrevorR You can try using this command [aic, bic] = aicbic(). For more info, please check: https://www.mathworks.com/help/...

oltre 3 anni fa | 0

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How can I obtain the State space from the Mass,stiffness,damping matrices
Hi @aiman If the matrices are known, then you can apply these formulas: A = [zeros(n) eye(n); M\K M\C]; % to get the State...

oltre 3 anni fa | 1

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How to tune PID controller from time constant and static gain?
@Bruno Araujo, Not sure if you are looking for some manipulations like this: Kp = 72.402; Tp = 639.24; Gc = pid(Kp) Gf = tf(...

oltre 3 anni fa | 0

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Cost function to minimize variance of error
@Rishabh Pachchhao, Since you didn't provide info about your system. here is an example that you can study. However, I don't t...

oltre 3 anni fa | 0

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How to solve this equation
@Raef, you are a good son and took up a filial duty to help your father. n = 1; y0 = 1; % intial value F = @(t, y) - (1...

oltre 3 anni fa | 2

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Can anyone help understand what the blocks in this figure are and where to find them in Simulink library?
Hi @Busuyi If you compare with the generic symbols in a Piping and Instrumentation Diagram (P&ID), they are manual-operated Gat...

oltre 3 anni fa | 0

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Find the local and global maxima and minima for the function (x+1)^2/(1+x^2) x belongs to [-5,5].Showing local min value something different than zero and how get local values
@Aashay, your code works. So, what exactly is the question for the math problem? syms x f(x)=(x+1)^2/(1+x^2); I=[-5,5]; fl(x...

oltre 3 anni fa | 0

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Fossen's dynamic AUV model implementation
Hi @John Terry You can follow a few examples on this link and apply the [V, S] = odeToVectorField(eqns) command. https://www.m...

oltre 3 anni fa | 0

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Solving a State Space Model using Runge Kutta method, Mid Point or Heun Method to view system response
Hi @Anas Rehman If you still keep the old versions of MATLAB (R2012 and older), you can find the requested ODE solvers in the l...

oltre 3 anni fa | 0

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Using fminsearch and then using the output of fminsearch in cost and ode function.
Maybe like this: [lambdas, cost] = fminsearch(@Q1_cost, -100) [interval, sol] = ode45(@Q1_ode, [0 10], [0.5 lambdas]); plot(i...

oltre 3 anni fa | 1

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How can I obtain a equation from my fuzzy or ANFIS model done using tool box?
Hi @Lilly Mercy and @Tony Castillo Not sure if this simple example really answer the queries for a 5-input, 1-output system. He...

oltre 3 anni fa | 1

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having trouble optimizing a NPV
Hi @jxl The function tsk(r) seems to be converging asymptotically to zero as . r = linspace(0, 1000, 10001); plot(r, tsk(r)),...

oltre 3 anni fa | 0

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how to plot a periodic function fro negative to positive?
Hi @Daniel Niu Are you looking for this? Edit: Made changes as per shown in your diagram. Because the amplitude is unknown, th...

oltre 3 anni fa | 1

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How to plot function f(x,y,z)=c ?
@Duong Nguyen Not how it looks. Are you expecting something like this? c = pi/2; z = @(x, y) acos(c - cos(x) + cos(y)); fsur...

oltre 3 anni fa | 0

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I'm not getting the correct result for the u, i want it in degree but the ans is not right, the plot is not smooth.
To understand why it is not smooth, you need to see what causes the singularity (division-by-zero) at around . ni = 1; nt = 1....

oltre 3 anni fa | 0

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function that applies the parabolic interpolation method
Hi @Miftahul Jannah, Can you provide the parabolicmin.m file? help parabolicmin By the way, you should be able to visually de...

oltre 3 anni fa | 1

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How to convert the following mathematica code to Matlab?
Hi @Md Fayaz Ahamed Identify the type of problem at first. If the problem is non-stiff, use ode45. Miscellaneous examples are p...

oltre 3 anni fa | 0

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How to find position function with acceleration function using matlab
Hi @ijsonvjksrefdsb This ordinary differential equation is a linear type. So, it is actually a kind of eigenvalue/eigenvector p...

oltre 3 anni fa | 0

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How do you design an adaptive PID controller/compensator for a Gimbal System? (taking in angle, accel, torque from reference)
Hi @Michael Ray Maligro If you asking how to design PID in MATLAB or Simulink, you need to have the mathematical model of the G...

oltre 3 anni fa | 0

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