Sam Chak
Statistics
0 Questions
743 Answers
RANK
94
of 271.205
REPUTATION
1.382
CONTRIBUTIONS
0 Questions
743 Answers
ANSWER ACCEPTANCE
0.00%
VOTES RECEIVED
158
RANK
of 18.292
REPUTATION
N/A
AVERAGE RATING
0.00
CONTRIBUTIONS
0 Files
DOWNLOADS
0
ALL TIME DOWNLOADS
0
RANK
of 119.793
CONTRIBUTIONS
0 Problems
0 Solutions
SCORE
0
NUMBER OF BADGES
0
CONTRIBUTIONS
0 Posts
CONTRIBUTIONS
0 Public Channels
AVERAGE RATING
CONTRIBUTIONS
0 Highlights
AVERAGE NO. OF LIKES
Contribute at least one answer each month for 12 consecutive months
Awarded to Sam Chak on 02 Oct 2022
Accept 1 answer given by other contributors
Awarded to Sam Chak on 19 Jun 2022
100 of your answers have been accepted
Awarded to Sam Chak on 27 May 2022
Answer 1 question that was unanswered for more than 30 days
Awarded to Sam Chak on 08 Jan 2022
Provide your first answer ever to someone else's question
Awarded to Sam Chak on 31 Jul 2020
Content Feed
Plot several solution curves to y'(t) = y(t) - t
Hi @Carla Roos You can create an anonymous function of t and y. fun = @(t, y) y - t; % <--- Type like this % solve f...
ongeveer 2 uur ago | 0
| accepted
How to import my state space Modell into Simulink
Hi @Ann-Christin Schlupek You will need to import the identified model from the MATLAB workspace into Simulink. Follow the step...
ongeveer 7 uur ago | 0
Closed-loop parameters identification
Hi @Andrea Carlo Giorgio Gottardini I see. You need the mathematical model to perform tuning on the PID. Since the Simulink mod...
ongeveer 7 uur ago | 0
is there any way to train a model to learn a matrix and all variables in it then generate same matrix
Hi @hessam asadi The answer is generally yes, it is possible to train so long as it is a non-singular (invertible) matrix. Fir...
ongeveer 7 uur ago | 0
Why the controller block diagram is not working (while tracking the reference and water level in tank 2 at specific level)?
Hi @Sana Mohamed It seems that your equation for causes the level of Tank #2 to dip below 0, thus term sqrt(x(2)) returns an ...
ongeveer 8 uur ago | 0
defining state matrix as anonymous function
Hi @Nicole The input should be defined for in order for the anonymous function to work properly in MATLAB. % parameters m ...
ongeveer 15 uur ago | 0
2-DOF Damped Unforced System. Finding Natural Frequences/Damping ratios. Receptance Matrix.
Hi @Nikolaj Gatijatullin I don't have sufficient knowledge about System 2 (2-DOF). If you can show how you normally use Mathema...
3 dagen ago | 0
Plot step response for control signal (u1 u2 ...) in a MIMO system with feedback
Hi @Cesar Adolfo Cruz Vargaya The original plant is a coupled 2nd-order MIMO system. If the desired closed-loop transfer functi...
4 dagen ago | 0
PID implementation using code
Hi @Sanjeet Kulkarni Wouldn't it be simpler if you obtain the signal directly from the Integrator block, and then feed it into...
5 dagen ago | 0
Optimizing simulink parameters from matlab code
Hi @Jasmin Falconer Put it another way around, you can fminunc() to directly optimize the gains from the Simulink model and th...
5 dagen ago | 0
conversion from fmincom to NSGA -II
Hi @basit mujtaba If you have written your own NSGA-II algorithm in a MALTAB function file, for example, called nsga2.m, then y...
5 dagen ago | 0
Find likelihood from state space with Kalman filter
Hi @Rob Perhaps you are looking for the likelihood() function. help likelihood
6 dagen ago | 0
| accepted
Driving force of driven damped harmonic oscillator missing
Hi @Jerry Yeung Basically, there is nothing wrong with your original code. The reason that the spring response is not affected ...
7 dagen ago | 0
I need cost function for tuning PID controller help me
Hi @Yazeed Ali Not sure what your system is, but I think you can try the one of the simplest cost function probably looks like ...
7 dagen ago | 0
nonlinear variable state space observer pole placement
Hi @Bernd Pfeifer Long time I didn't solve math puzzles like this one. Generally, you should be able find the analytical soluti...
14 dagen ago | 2
finding the distance between two points
Hi @Natali Petani You can try the function: pdist2(). https://www.mathworks.com/help/stats/pdist2.html help pdist2
18 dagen ago | 0
Input Signal from state space model
Hi @Justin You can try using the lsim() function. Search Google/Documentation for details. Example is shown below: A = [ 0 ...
18 dagen ago | 0
My Simulink Model takes hours to complete 1 second, and I need to run it for 5,000 second. I tried to change the minimum time step, but Matlab keeps giving erros when I do so.
Hi @janna roberts The typical satellite attitude dynamics are not stiff. You can try, but I think changing it to a stiff solver...
18 dagen ago | 0
How to verify if my system (Z-domain) is stable in MATLAB
Hi @Rafael Most probably because you did a "positive feedback". Try do this impulse(feedback(K*TF, 1)) instead of impulse(f...
19 dagen ago | 0
How to make the linear function
Aha, I see... If you want to get rid of spikes and want a smooth transition, but not strictly linear, then you can consider addi...
20 dagen ago | 0
Creating custom Transfer Function with more learnable parameters
*Edit*: This article contains information about creating custom functions for NN. https://www.mathworks.com/help/deeplearnin...
20 dagen ago | 0
What algorithm to use for collision avoidance of a robot?
Hi @Farzad Torabi I'm unsure. Maybe you intend to tell the robot to "back down" or retract the arm? Conventionally, RRT is an ...
21 dagen ago | 2
| accepted
PID for fixed distance
Hi @Andrea Tonelli I think your control design part is okay. But the divergence issue is probably related to the way you setup ...
21 dagen ago | 0
Why does matlab plot the unit step like a straight line?
Hi @Mark S System 1: s = tf('s'); sys1 = 1/s; % integrator system step(sys1) System 2: sys2 = zpk([], [...
22 dagen ago | 1
| accepted
Minimization of cost function on MPC
Hi @Chandrakanth Pavanaskar You have a system model sys and I presume that you have written your own code for the ODE_solver to...
23 dagen ago | 0
How can i get smooth sine wave in MATLAB R2020b with any frequency.
Hi @Rohit To get a smooth sine wave, you are suggested to use this Sine Wave Function block: https://www.mathworks.com/help/...
23 dagen ago | 0
Implement these expressions in OCTAVE and plot on the same figure, the two functions: f=3t2 +2t-0.5 , g=2t cos(t) where the variable t varies from 0 to 10 with step 0.5.
@Jignasa, I typed exactly the same equations as you knowingly put on the description. But it gives error. Please check if the...
24 dagen ago | 0
PID Tune: Plant cannot be linearized
Hi @Arash Most likely your PV system has components that contain discontinuities. Thus, the Plant cannot be linearized. Howeve...
24 dagen ago | 0
| accepted
State-Space Matrices
Hi @Aysel Alimirzayeva I added a simple example to show you. If you like this example, consider voting 👍 the Answer. Thanks! S...
25 dagen ago | 1
Plot step response of transfer function
Hi @Ye Ken Kok It is a input-output difference equation. Thus, you cannot use the continuous-time Laplace transform. Since the...
26 dagen ago | 0
You can also select a web site from the following list:
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)
Asia Pacific
- Australia (English)
- India (English)
- New Zealand (English)
- 中国
- 日本Japanese (日本語)
- 한국Korean (한국어)