Community Profile

# Sam Chak

Last seen: Today 自 2020 起处于活动状态

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#### Feeds

Find State Space Representation of non-linear System to find State Space Representation in Canonical form MATLAB
Hi @Jonathan Frutschy Given that no original MATLAB code for the nonlinear system is provided, I believe it would be more effic...

8 hours 前 | 0

Ramp block having reset option
Hi @Andraz If you have a good understanding of the fundamental mathematics behind a line graph, then theoretically, you should ...

1 day 前 | 0

need name of the block in simscape tools
Hi @Hamid Ullah It appears to be a Simscape block diagram. Simscape components cannot be connected directly to the Scope block....

1 day 前 | 0

Trying to determine roots of this polynomial (Det)
k = [1750 -750 0; -750 1250 -500; 0 -500 500]; m = [75 0 0; 0 75 0; 0 0 50]; D = inv(m)*k; syms x I = [x,0,0;0,x,0;0...

1 day 前 | 0

a nonlinear system and its control input in simulink
Hi @controlEE The control signal plotted in your comment is incorrect. Since you have completed the learning tasks and are capa...

3 days 前 | 1

I want to find two missing parameters in an ODE system of equations using regression/optimization in MATLAB
Hi @naiva saeedia I have prepared a simple demonstration below to illustrate that the fmincon optimization solver can be utiliz...

4 days 前 | 0

integrate for long equation
Hi @GUILU You can DIVIDE the integrand and then CONQUER it. Once you've done that, you can validate the result by comparing it ...

6 days 前 | 1

How do I solve the following Algebra equation?
Algebraically speaking, since there is no equal sign '', it is not an equation and there is technically nothing to solve in the ...

8 days 前 | 0

Particle swarm algorithm in Fuzzy Logic Designer is breaking unity sum property of membership functions, how can I stop this?
Hi @Ben Hatrick I have rarely used PSO to tune fuzzy systems, and I hadn't realized this phenomenon until you brought it up. ...

9 days 前 | 0

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hi how can i evaluate the function below from x=1,x=2 into a step of 0.1 y=x/(x2+1)
syms x y = eval('x/(x^2 + 1)') % <-- check if the function is correct xa = 1; % start point of [xa ≤ x ≤...

9 days 前 | 0

How to expand this formula in Matlab/simulink
If the symbol is related to the complex variable as defined in the Laplace transform, then you can use the Transport Delay bloc...

9 days 前 | 1

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Plotting a 3-value graph
Refer to the examples in yyaxis documentation. x = linspace(0,10); y = sin(3*x); yyaxis left plot(x,y) z = sin(3*x).*exp(...

10 days 前 | 0

How can I define a block ( Transfer Fcn) in simulink?
Hi @M1A Linear time-invariant models with more zeros than poles are not supported in Simulink. However, you can create such a m...

11 days 前 | 1

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how to add subscript into transfer function and constant block parameter
Hi @Olarewaju Update: In order to create a model block with a visually appealing display of mathematical notation, I personally...

11 days 前 | 0

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I am running into trouble answering the question asked in the description.
Hi @Jackson, You have been provided with the MATLAB script 'Project2_Q1.m' to plot the solution curves for question Q1(a). To ...

11 days 前 | 0

problem with matlab function in simulink (inpunt problem)
Hi @Alya Bostani Is this the expected result for ? Try fixing the code in the matlabFunction block. t = 0:0.01:10; P = as...

11 days 前 | 0

a nonlinear system and its control input in simulink
Hi @controlEE Great job on your progress shown in the comment. Now, I'd like to share my piecewise function formula with you: ...

12 days 前 | 1

How to get graph properties on Live script? e.g. Rise time, setting time etc.
Can use the stepinfo() command. G = tf(1, [1, 10, 20]) % the transfer function stepinfo(G) step(G), grid on

12 days 前 | 2

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Hello all, I have a little problem with my simulink model. So, I can't connect this block each other like I had in past model from old version Matlab. Do u mind, how solve ?
Hi @Bogdan The blocks you're looking for are likely still present in the MATLAB directory, although they may be hidden within s...

12 days 前 | 0

I can't see the cosine graph. How do I generate the cosine graph using 2^10 samples?
deltat = 0.001; nsamples = 2000; time =[0 : deltat : deltat*(nsamples-1)]; size(time) % for i = 1:nsamples ...

13 days 前 | 0

Solving a system of Non Linear Differential Equations
Hi @kdv0 Apart from the incorrect initial value for , which should be , the rest of the information in the code is correct. The...

13 days 前 | 0

Plotting an Inverse Laplace Function
Not exactly an answer, but rather an attempt to recreate the 'answer' that was displayed in your Command Window. It appears th...

14 days 前 | 0

How to fix my linear fit model?
Hi @Jenni Upon initial inspection, it appears that the data follows the trend of the ReLU function, which is a piecewise linear...

14 days 前 | 1

Simulation for a standalone wind turbine with a DFIG
There is an example for a wind turbine with a Doubly Fed Induction Generator (DFIG). Type "DFIG" at the Help Center to search ...

14 days 前 | 0

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Couple ODE System not enough Input arguments, Why?
Hi @Thanh Hoang I have added these four lines to your original code. The modifications made are minimal. %% ----- added these ...

14 days 前 | 0

pole zero plot of simulink
Hi @Gowtham Use this block.

14 days 前 | 0

I want to find two missing parameters in an ODE system of equations using regression/optimization in MATLAB
Hi @naiva saeedia The system identification task at hand seems to be quite challenging, as you only have two parameters to mani...

14 days 前 | 0

How do I optimize solutions of ODE?
Hi @Amito Usami-san Considering your objective of varying the force input 'Fc', it becomes necessary to create a Gain Schedule ...

14 days 前 | 1

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solve differential equations use bvp4c
Hi @lvlv sun Add these two lines to code as shown below to get the desired number of points for the solution. numpts = 5; ...

14 days 前 | 0

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hi.I have problem in spacecraft dynamic control simulation.
Hi @ali.heydari I renamed the ODE function to 'odefcn()' because 'ode' is a built-in function introduced in the R2023b release....

15 days 前 | 0

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