Sam Chak
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Accept 5 answers given by other contributors
Awarded to Sam Chak on 10 Oct 2023
Contribute at least one answer each month for 24 consecutive months
Awarded to Sam Chak on 02 Oct 2023
100 of your answers have been accepted
Awarded to Sam Chak on 27 May 2022
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Content Feed
How to find the max Phase lead provided by a Compensator?
Hi @Gidel You can also check using the bodeplot() for visual and the bode() for finding the max angle. sys = tf([1 1], [1 3]) ...
1 day ago | 1
can someone help me with this transfer function in simulink?
Hi @BT First, you need to transform the system model from a transfer function to state-space (obtain the matrices). Then, const...
1 day ago | 0
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How to convert symbolic transfer function to state space?
Hi @Ali Almakhmari @Paul's method is to use tf2ss(). In the past, I used this approach, but now I no longer use it since learni...
1 day ago | 0
Simulink add Transferfunction as binominal equation
Hi @Gunnar Schmidt Technically, if the parameters do not change during the simulation in Simulink, then the Zero-Pole block sho...
2 days ago | 0
How to convert symbolic transfer function to state space?
Hi @Ali Almakhmari I am uncertain about your intention regarding the symbolic state-space. The state-space object from the Cont...
3 days ago | 0
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Solving 4 nonlinear equation for 4 unknowns numerical - doesn't find an answer [0×1 sym]
Hi @Faraz j Fixing the vpasolve() syntax does return some complex-valued solutions, with their real parts close to the values o...
3 days ago | 0
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How to fix such type of problem ?
Hi @Assen Beshr Correct me if I interpreted your problem incorrectly. If you want to maximize the real part of the stabilizing ...
3 days ago | 0
Time responses of the steering angle
Hi @Nguyen Finding the values to plot the graph is less useful than having a reliable algorithm to determine the steering angle...
3 days ago | 0
Second order approximation of a third order system
Hi @Keaton Looper For versions before R2023b release, use the balred() command. Now you can use the newer reducespec() command ...
3 days ago | 0
how to see training, validation and test regression lot in ANN
Hi @Sunita Here is an example using the plotregression() command. x = 0:10; targs1 = x.^2; outs1 = targs1 + 7*randn(1...
3 days ago | 0
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How do I obtain the bode plot of the given transfer function?
Hi @bebo You need to improve your skills in identifying math operators. There are many missing '*' operators % Parameters of t...
3 days ago | 0
can I ask a several question about automatic control ?
Hi @영석 윤 When a differential equation is given, modeling a system in Simulink requires converting the equation into integral fo...
3 days ago | 0
Water Storage Tank Modelling
Hi @Abdelmoniem Abomosalam Your question is quite broad, so I recommend starting with the modeling of water tank level control....
4 days ago | 0
Modeling a water tank system using h(t)
Hi @Maria The equation you showed, , is actually the analytical solution of a 1st-order linear system that exhibits an exponent...
5 days ago | 0
please help me to this error "Derivative of state '1' in block 'ex/Integrator1' at time 1.3765443114784894 is not finite. The simulation will be stopped. There may be a sing
Hi, your system is unstable and it grows without bound, thus making the simulation stops. Check the formulas of each Gain block....
6 days ago | 0
Root Locus Plot Is Way Off
Hi @Walter Roberson Based on the description from the OP, the compensated system should form a closed-loop system. The formula ...
6 days ago | 0
Root Locus Plot Is Way Off
Hi @Arpad It seems that employing the place() command is a more efficient approach to solving the pole placement problem. I wil...
6 days ago | 0
Root Locus Plot Is Way Off
Hi @Arpad I am uncertain about what your professor intends for you to learn. Initially, the problem seems akin to a standard Po...
6 days ago | 0
Tune FIS with Training Data
Hi @Ahmad Long story short, the MATLAB data file 'tunedfismpgprediction.mat' contains 2 pre-trained FIS files because this is a...
7 days ago | 1
| accepted
Please help. The first input argument of the "tf" command cannot be a string.
Hi @Melissa Variable K doesn't a specific value, I want multiply K other variables like TR2... From the root locus, it appear...
8 days ago | 0
Lotka volterra model for 3 species (1 prey - 2 predators)
Hi @José Manuel This isn't strictly a MATLAB-related question, but I believe animal behaviorists might be able to advise you. A...
8 days ago | 1
PID simulation for heating with heat pump
Hi @Branko What is the best way to simulate the system and ... If you are a newbie, I'd recommend modeling the system in Simul...
9 days ago | 1
transfer function zeros are more than poles
Hi @aiman You can try these configurations (2 methods). Both should produce nearly the same output signals.
9 days ago | 1
| accepted
Plotting issue where the curve is missing
Hi @Lutfi The reason is that Phi_b is a constant, and time is a vector. They don't have the same dimension. Phi_b = (1 - 0.930...
9 days ago | 2
Plot interval in y
Hi @Maria The ylim() command can be used to set the interval on the y-axis. x = -1:0.01:1; y = x.^3 - 0.25*x.^2 - 0.5*x; f...
10 days ago | 1
| accepted
Inverse Laplace transform of a 4 by 4 matrix
Hi @Sunday Aloke Since this is a linear dynamic system described in state-space, the output can be found using the dsolve() com...
10 days ago | 0
| accepted
particle swarm optimization code to minimize cost function
Hi @REENA Regarding the particleswarm() solver, I believe you can define constraints using the Problem-Based Optimization appro...
11 days ago | 0
How would I plot this and then achieve minimum and maximum.
Hi @Tom The cubic function does not have global extrema, but it does have a local maximum point and a local minimum point. Are ...
11 days ago | 1
ode45 errorI have
Some corrections in the ODE function (ODAYRK1) Tol = 1e-12; Tol0 = 1e-9; tspan = [0 10]; options = odeset('RelTol',...
11 days ago | 0
Find zeropoints with interpolation
Hi @malik abdelli Check this out to see if this approach, using the zerocrossrate() function, is acceptable for finding the ind...
12 days ago | 1
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