Answered
How do you solve equations with multiple variables?
Hi @Ilan, some multiplication operators (*) are missing. It is working now. % List of Parameters E1f = 233; v12f = 0.200; E...

3 years ago | 2

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Answered
Application of any numerical root finding method (secant, bisection, etc.)
Hi @ABDALLA AL KHALEDI Take pride in the fact that your Bisection method yields the same result as fzero(). Cs = 0; d = 0.5; ...

3 years ago | 1

Answered
How do I solve an equation with an unknown variable?
Hi @TC Yes, there is a useful function called 'isolate()' in Symbolic Math Toolbox. If you want to do this iteratively, please ...

3 years ago | 0

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Element Wise Matrix multiplication issue (.*)
Hi @Yuvraaj Pasumarthy, Update: With the values of zeta, beta, and mu provided, you can plot something. You can try experimenti...

3 years ago | 2

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Answered
How can I show the stability graph?
Hi @Can Yilmaz, The transfer function can be rewritten as where where the characteristic equation defines the behavi...

3 years ago | 0

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Solving symbolic third order polynomial
Hi @Axel Degrande The trajectory position is chosen to be a cubic polynomial. From this cubic polynomial, the velocity can be...

3 years ago | 0

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How to simulate the forced response of a transfer function
Hi @Ali Almakhmari The 'lsim()' command is great when the Control System Toolbox is available. Here is an alternative approach ...

3 years ago | 1

Answered
How do I do a regress like this?
Hi @Leon I'm not exactly sure what you want. If you're looking to find the exact percentage drop, as @Image Analyst has shown y...

3 years ago | 1

Answered
How to find kp, ki, kd values from transfer function
The question (in the title) about finding PID gain values {, , } from an unspecified transfer function is not exactly clear. Giv...

3 years ago | 1

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slow simulation because of integrator
Hi @Magda Since no details are provided to describe why the simulation is slow, I can only guess that the system is stiff. To a...

3 years ago | 0

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How can i solve this.
@Nia, You can look up some examples here: https://www.mathworks.com/help/signal/examples.html More importantly, could you pl...

3 years ago | 0

Answered
how to find stable and unstable spiral point?
@Yixuan Qi, This is actually the Rayleigh Differential Equation. I assume you would like to utilize a graphical approach, as the...

3 years ago | 0

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Integral MPC in Simulink
Hi @Ale_798 Thank you for clarifying the problem. I'm not an expert in MPC, but after reviewing your comment, I believe you can...

3 years ago | 0

Answered
LMIterm problem: Error using lmiterm, Complex number, NaN or Inf not allowed in A, B.
Hi @Syue-Cian The code looks okay. Can you show the matrix A_F? Performing Test #1: % Test #1 A_F = eye(2) setlmis([...

3 years ago | 0

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wheeled mobile robot dynamic equation
HI @BINOY I don't see any specific question. Perhaps this is your first time asking a question in this forum. If you are not hi...

3 years ago | 2

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Queries regarding PID Tuner app?
Hi @ABTJ The PID Tuner app assists designers in automatically tuning the PID control gains for a SISO plant to achieve a balanc...

3 years ago | 0

Answered
How to detect data that does not follow a bell curve?
Hi @Miguel Not sure if you can try it this way to compare the R-square value. Data that follows the bell curve tends to have a ...

3 years ago | 1

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Answered
why my “pid” parameters(Kp,Ki and Kd) values are not showing up in pidtuner tool?
Hi @ABTJ, The command pidtool(B, 'pid') launches the PID Tuner app and designs a PID controller for plant B. However, plant B i...

3 years ago | 0

Answered
watching PID controller output value at perticular point
@rathod ujjval rameshbhai, Since no performance requirements are specified, the pidtune() command can be used to automatically s...

3 years ago | 0

Answered
I need Ant lion Optimization Matlab code for controller design for Four Tank System to contimue my research work.
@Praveen Kumar, You can find the Ant Lion Optimization (ALO) algorithm implemented in MATLAB on File Exchange. However, please ...

3 years ago | 0

Answered
Please help me solve this material balance
Hi @Rachael @Torsten has shown you how to solve PDEs in MATLAB. From the PDEs, you need to rearrange and rewrite the equa...

3 years ago | 2

Answered
solve ode with ode45
Hi @Lan If I'm not mistaken, 'dr' stands for 'damping ratio.' You probably want to observe how the response dampens over time. ...

3 years ago | 0

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Answered
How to simulate multiple doses and generate only one plot?
Hi @Lo Are you looking to plot something like this? m1 = sbiomodel('onecomp'); r1 = addreaction(m1,'drug -> null'); k1 = a...

3 years ago | 0

Answered
ode45 solver argument error
Hi @Andria If you start the simulation from , then a singularity will occur due to the division-by-zero term '...*v/x'. However...

3 years ago | 0

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how do i solve the attached system of ODEs?
Hi @Gabriel Samaila This is an analysis of the behavior of such that the states in Eq. (13), { and }, approach 0 as approache...

3 years ago | 0

Answered
Simple Question: How to Plot a Function over an Interval (Details in Body)
Hi @Michael Meyne Alternatively, you can also use fplot() to symbolically plot the function over the specified interval for ....

3 years ago | 0

Answered
Where is the mistake in (x.^2-y.)^2?
Hi @Shelsyn, Either the dot was misplaced, or f1 = @(x, y) (x.^2 - y).^2; % <-- the dot is outside of the parentheses figure...

3 years ago | 1

Answered
How to convert linguistic variables into fuzzy values?
Hi @Najat Ali Khalifa The fuzzy membership functions for the linguistic variables VeryCold, Cold, Warm, Hot can be created usi...

3 years ago | 0

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fmincon with handle function input
HI @giacomo, I'm unsure if this is what you want to minimize using fmincon(). This is just a simple example without constraints...

3 years ago | 3

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Answered
What is wrong with this code.
Hi @ZAINULABADIN ZAFAR Update: Thanks to @Walter Roberson for finding the source (PDF). The MATLAB functions stabilitaetsanalys...

3 years ago | 0