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Feeds
minimizing with genetic algorithm
Hey @dal For time-invariant real-valued univariate functions, it is recommended to plot the graph to estimate the approximate l...
5 Tage vor | 0
When plotting functions like 1/sin(x), how can I remove the vertical lines at the points of discontinuity?
Use fplot(). fplot(@(x) 1./sind(x), [-359 359]), grid on, xlabel('degree') % d = -345:30:345; % x = deg2rad(d); % y = ...
6 Tage vor | 0
how do divide like this picture by code matlab?
Hi @Vuong If this is a topic of Finite Element Analysis, then look up generateMesh() and pdemesh(). gm = fegeometry(@lshapeg);...
12 Tage vor | 0
Have successfully used ode45 once in this code, but with the same size parameters am getting an error about initial conditions vector being longer than the return vector.
Hi @Raoul There is no error in organizing the code structure clearly with constants and states (variables that change over time...
20 Tage vor | 0
Controllable Companion form for a MIMO system
Hi @naiva saeedia The following is the result returned by compreal: %% Original state-space Plant A = [-0.978707531551846 ...
25 Tage vor | 0
Initial Oscillations in Closed Loop Control Model
Hi @Mariangela Plot the vector field, and you should be able to understand the instantaneous dynamics at each point in the phas...
28 Tage vor | 0
PID tuning to meet conditions for settling time and overshoot while a stable system with minimum peak time and zero velocity error.
Hi @Ashaya KC Here is the solution using pidtune(). There is no direct way to input the desired settling time and overshoot per...
28 Tage vor | 0
| akzeptiert
PID tuning to meet conditions for settling time and overshoot while a stable system with minimum peak time and zero velocity error.
Hi @Ashaya KC Let's first use the ideal mathematical solution and then compare it to your solution obtained using the pidtune()...
28 Tage vor | 0
having problem plotting ramp function
Hi @Tien Yin The signal in the image is a piecewise function that consists of three sub-functions defined over different interv...
28 Tage vor | 1
How to add an s+1 block on simulink?
Hi @Julian Since you are unable to clearly define the control objective and performance requirements, I can only advise you to ...
etwa ein Monat vor | 0
Optimization Eigenvalue problem Stiffness matrix
Hi @Marina The problem has two parts. I have solved only the first part for you, which is to determine the characteristic polyn...
2 Monate vor | 0
Turning powers of hyperbolic functions to multiple arguments
Hi @Andrew At first, I thought you were describing the sum of arguments. This is certainly not a silly question. However, it re...
2 Monate vor | 1
how can I calculate euler constant
Hi @hajer Three days ago, @John D'Errico and I discussed the Gamma function in this thread. I’m not sure how to perform the num...
2 Monate vor | 2
make the execution faster
Hi @prabal datta You might as well use the built-in ODE solver, such as ode45, to solve the chaotic Lorenz system for compariso...
2 Monate vor | 1
The Newton Raphson method for p(x) = 100 .* sqrt(x) .* 0.99.^(sqrt(x)) - 0.5 .* x, problem with derivative and reasonable x value
Hi @Elina You likely want to find the value of where the maximum value of occurs, but you may have inadvertently used the New...
2 Monate vor | 0
finding altitude using matlab atmosisa given pressure
Hi @Irfan You can use this minimization approach. altitude = ga(@costfun, 1, [], [], [], [], 3.9e3, 4e3) %% Check result [~,...
2 Monate vor | 0
| akzeptiert
PID controller behaves strangely for larger Ts values
Hi @Wynand There are a few things for which you can find detailed explanations in control theory books. In short, the ideal ITA...
2 Monate vor | 1
How do I solve this differential equation?
Put the constants inside the function. tspan = [0, 1e-3]; y0 = [0.139626; 0]; [t, y] = ode45(@(t,y) odefcn(t,y), tspa...
2 Monate vor | 1
| akzeptiert
How to do this block diagram in simulink?
Hi @Tahsin If you are referring to this block diagram, there is a slight mistake in the architecture, as the Velocity Loop and ...
2 Monate vor | 0
How to properly fit the data to lorentzian curve as I am getting a few errors...
Hi @Yogesh Here is the fitting with a Gaussian model. RMS=[]; R=[]; P_threshold=[]; L=5; %[m] Fiber length V1=[1]; P0=4.7...
3 Monate vor | 0
PI controller does not have the effect I would expect from the calculations
Hi @Wynand Please see my explanations below. %% Plant K = 11041666; B = 100; M = 1019; num ...
3 Monate vor | 0
| akzeptiert
What calculation is done to find the gains (k) of the zpk function?
Hi @Rafaella Barrêto Campos Short Answer: Due to your specific state-space configuration, k(1) is derived from the first elem...
3 Monate vor | 0
Model and control state space with perturbation
Hi @CN. The discussion in the provided link does not address control design for disturbance rejection. Regarding your inquiry,...
3 Monate vor | 0
Trying to create a polynomial using data from a table
Hi @Andrei I believe the correct syntax should be [X, Y] = meshgrid(dP, PressureInlet), and the remainder of your code appears ...
3 Monate vor | 0
What optimization algorithm would work best for my network problem?
Hi @Robert Gray It may be difficult to determine which optimization algorithm would work best for your network problem. Some op...
3 Monate vor | 0
How to properly fit the data to lorentzian curve as I am getting a few errors...
Hi @Yogesh Here is how I fit the Lorentzian model: RMS=[]; R=[]; P_threshold=[]; L=5; %[m] Fiber length V1=[1]; P0=4.7960...
3 Monate vor | 0
| akzeptiert
Controlling the actuator with 5,10 mm displacement input.
Hi @Fatih The mathematical function for the reference signal (red curve) is necessary so that we can instruct the PID controlle...
3 Monate vor | 0
function zpk and linmod
Hi @Rafaella Barrêto Campos Once you have the state-space, you can apply the zpk() function to obtain the TF in zpk mode. A ...
3 Monate vor | 0
I am using the MATLAB exchange file called "A MATLAB Script for Earth-to-Mars Mission Design", getting error sunscreen is not defined
Hi @Chintan Most of the simulation projects by David Eagle require SNOPT, which stands for Sparse Nonlinear OPTimizer. If you a...
3 Monate vor | 1
| akzeptiert
How to define the output membership function in Sugeno method while using Fuzzy Logics Design app in Matlab?
Hi @Tharun Balaji Rangaswamy Selvakumar If you have a set of data, you can train the ANFIS, which produces the Sugeno Fuzzy Sys...
3 Monate vor | 0
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