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Sam Chak


Last seen: Today |  2020년부터 활동

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How to manually simulate linear system without lsim
Hi @Valeriy Other than lsim, you have two options for solving the differential equations: you can use the built-in ODE solver o...

대략 14시간 전 | 0

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Why does my plot line appear outside the axes?
Because the xlim() command is used on the right y-axis plot. x = [0 1 2 3 4]; yl = [0 1 2 4 3]; yr = [0 2 3 1 2]; yyaxis le...

1일 전 | 0

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Why is my 3D Projectile Trajectory not being calculated properly?
Hi @Abeljohn Taking a mathematical physicist's perspective into consideration, I would recommend focusing on correcting the cod...

1일 전 | 0

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Index exceeds the number of array elements. Index must not exceed 3. HELP
Hi @Elizabeth Pickford Few places require fixes. Check out the annotated lines. S0 = 99; I0 = 1; R0 = 0; N0 ...

2일 전 | 2

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Error while multiplying 2 SISO transfer functions.
load('dataC1C2.mat') Hi @Bogdan -Ervin While I haven't been able to pinpoint the exact root cause of the issue, I can suggest ...

2일 전 | 1

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I have 2 graphs , on the Y axis I have Acceleration in graph. 1 and Speed in graph 2. And on the X axis for both I have Period (Seconds). How can I create a third chart?
How about this? figure(3) % create a 3rd graph plot(displacement, acceleration) % make the plot

3일 전 | 0

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How do I write time dependent variables in my equations of motion?
Hi @Jessica The analytical solutions and results presented in @Torsten's post are indeed accurate. Given that the system is lin...

3일 전 | 0

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Phase plane plot second order ODE
Looks correct! No issue because I checked with the built-in @odephas2 function to generate the 2-D phase plane plot. Edit: Upon...

3일 전 | 0

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How can I write a set of first order ODEs with two variables?
Hi @Lily I made some edits to enhance the annotations. Essentially, the idea is to represent the dynamic system in state-space ...

4일 전 | 1

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Curve fitting with multiple variables?
Hi @Liril Silvi, See if the polynomial surface function is acceptable tb = readtable('Book2.xlsx', 'VariableNamingRule','pres...

4일 전 | 0

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how to save only the final output of ode 45 solve
Hi @SOUVIK DARIPA I created a dummy model to test the for-loop code. Though you didn't annotate the code properly, I believe t...

4일 전 | 0

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How to write this block diagram into Matlab in feed forward control form.
Hi @Jake I have successfully utilized the 'feedback()' function to obtain the same modeling result for as presented in my prev...

5일 전 | 0

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How to write this block diagram into Matlab in feed forward control form.
Hi @Jake Around two months ago, you had a similar problem, but we didn't receive any feedback from you regarding whether the pr...

5일 전 | 0

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How can I simulate the MIMO section only?
While I'm not an expert in BPSK and QPSK, I haven't encountered any problems when running the script in the link you provided an...

6일 전 | 0

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Dot product does not work for symbolic vectors
Probably it has something to do with how MATLAB interprets 'gamma1(t)' . syms t g y real syms alpha1(t) beta1(t) gamma1(t) s...

7일 전 | 1

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Derivative of state '1' in block 'F16_Aircraft_MODEL/6DOF (Euler Angles)/p,q,r ' at time 0.0 is not finite. The simulation will be stopped.
The Error message "Division of ZERO" is clear. Most likely the input signal [V] to the Division block is zero. Please assign cho...

7일 전 | 0

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Obtaining the proportional, derivative and integral gains from a specific settling time and overshoot inputted using a Simulink block diagram
Hi @Gallad Isse The systune tool might be a viable option for tuning the Controller to achieve the desired TuningGoal as closel...

8일 전 | 0

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Find State Space Representation of Linearized non-linear System to find State Space Representation in Canonical form MATLAB
Hi @Jonathan Frutschy I have conducted a simulation of the motion for 600 masses using the ode45 solver. Please refer to the co...

8일 전 | 0

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How can I improve my voltage controller?
Hi @Pablo In general, when designing a model-based controller in conventional simulation platforms, you gain complete control o...

9일 전 | 0

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Similar results in type-1 and type-2 fuzzy logic controller applying in MIMO systems
Hi @F. Paul The reason for the similarity lies in the fact that the performance of the Type-2 fuzzy logic controller behaves ak...

9일 전 | 0

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Find State Space Representation of Linearized 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...

11일 전 | 0

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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 ...

11일 전 | 0

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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....

12일 전 | 0

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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...

12일 전 | 0

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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...

13일 전 | 1

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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...

14일 전 | 0

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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 ...

17일 전 | 1

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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 ...

18일 전 | 0

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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. ...

19일 전 | 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 ≤...

20일 전 | 0

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