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Sam Chak


Last seen: Today |  2020 年からアクティブ

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multiple equations to steady-state system to transfer function
Hi @erin Part 1 of your code does not work because the tf() function from the Control System Toolbox is primarily used for crea...

約12時間 前 | 0

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Use of functions ctrb and poly
No error message generated. You should provide yours to find out the actual issue. A = [ 0 1; -1 -2]; B = [ 0; ...

約18時間 前 | 0

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How to find rise time in fractional order system, give matlab code?
Hi @SARAVANAN Once you have generated the response signals y(t) from the fractional order system, use the following syntax to d...

1日 前 | 0

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deriving a transfer fuctnion
Hi @Plato This is a homework question. However, you can use the feedback() function to compute the closed-loop transfer functio...

1日 前 | 0

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Distinguish the different curves and identify the points corresponding to each way
Hi @rana I now understand that you are seeking advice on graphically displaying the data. Here is an example of what I consider...

5日 前 | 2

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How do you use To Workspace? (DC Shunt Motor)
The To Workspace block logs the signal connected to its input port to the workspace. To access the data logged by a To Workspace...

6日 前 | 0

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Why doesn't Iref_sd = 0 when 0 is input to Tref and ωm in the ACIM control reference?
Hi @中嶋 Your and according to mathematical model of the AC Induction Motor (ACIM) Control Reference block, if the condition is...

6日 前 | 0

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how to input a function as a parameter of a function
Hi @Tony Cheng Something like this: %% Script to call 'fMin1D' x0 = [1, 1]; [x, fval] = fMin1D(x0, @quadfcn) %% Minimize...

7日 前 | 0

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How to implement an LQR controller when the system's state variables and control inputs have different units?
Hi @준호 Could you provide a simple code example involving lqr() to illustrate your concern? There should not be any issues with ...

7日 前 | 0

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Simulink physical sys is stable even the Matlab model for the same sys is unstable
Hi @mohamed If at least one pole of the closed-loop system has a positive real part, the system is considered unstable. You may...

8日 前 | 0

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How to implement MPC when the number of states is greater than the number of outputs?
Hi @준호 The MPC Controller still functions effectively even when the number of states exceeds the number of outputs. I have made...

9日 前 | 0

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Stepinfo provides wrong rise time using [0, 0.63] limits for non minimum phase systems
Hi @Ken Buckholtz Here is another approach to estimating the user-defined rise time: by defining the 'RiseTimeLimits' and ident...

9日 前 | 0

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Converting a nonlinear state equation into state dependent matrix form
Hi @Md Sabbir Haider Based on your descriptions, it is entirely acceptable to use the nonlinear state equations for simulation ...

9日 前 | 0

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Stepinfo provides wrong rise time using [0, 0.63] limits for non minimum phase systems
Hi @Ken Buckholtz Rise time is a non-standard performance measure. By default, in MATLAB, rise time is defined as the duration ...

9日 前 | 0

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please ,write a code to 3D plot this file .
I am unsure about the specific type of 3D plot you require. I reviewed your previous questions and found that you have already l...

11日 前 | 0

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How to solve Coupled Differential Equations
Hi @Lorenzo Primarily, coupled ordinary differential equations (ODEs) in additive form can be decoupled using the substitution ...

11日 前 | 0

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how can i simulate feedback system with fuzzy controller in m file without simulink?
Hi @mohamed al-asklany If the fuzzy controller (or the *.fis object) has been designed, it is straightforward to implement it ...

12日 前 | 0

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Plot the function on graph
Look up the documentation plot(). There are plenty of simple examples that you can learn to plot it yourself.

12日 前 | 0

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PSO algorithm MPPT change irradiation condition
Hi @DIMAS You are likely seeking general solutions without needing someone to guide you through the process step-by-step. The d...

13日 前 | 0

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How i can talk to support of Matlab website?
Hi @salim saeed I would like to add that when you share your scripts, code, models, or graphics, you grant forum users the righ...

14日 前 | 1

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Rotary Inverted Pendulum State Space Model PID Control
Hi @Burak Mert If no other control requirements are specified, the objective is to "freely" find any combination of gain values...

14日 前 | 0

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Evolutionary learning tools or aids
If you are looking for a built-in function for optimizing solutions based on learning principles inspired by biological evolutio...

15日 前 | 0

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Step response is not showing up in the legend of my plot
I tried plotting both to display on the same graph and inserted the legends. There's no problems so far. legend('simulated', 'e...

16日 前 | 0

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Fit a standard exponential fit to approximate data
Hi @Reji G You can use the approach described by @William Rose. Alternatively, you can use the envelope() function. The followi...

23日 前 | 1

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minimizing with genetic algorithm
Hey @dal For time-invariant real-valued univariate functions, it is recommended to plot the graph to estimate the approximate l...

約2ヶ月 前 | 0

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When plotting functions like 1/sin(x), how can I remove the vertical lines at the points of discontinuity?
Use fplot(). fplot(@(x) 1./sind(x), [-359 359]), grid on, xlabel('degree') % d = -345:30:345; % x = deg2rad(d); % y = ...

約2ヶ月 前 | 0

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how do divide like this picture by code matlab?
Hi @Vuong If this is a topic of Finite Element Analysis, then look up generateMesh() and pdemesh(). gm = fegeometry(@lshapeg);...

2ヶ月 前 | 0

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Have successfully used ode45 once in this code, but with the same size parameters am getting an error about initial conditions vector being longer than the return vector.
Hi @Raoul There is no error in organizing the code structure clearly with constants and states (variables that change over time...

2ヶ月 前 | 0

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Controllable Companion form for a MIMO system
Hi @naiva saeedia The following is the result returned by compreal: %% Original state-space Plant A = [-0.978707531551846 ...

3ヶ月 前 | 0

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Initial Oscillations in Closed Loop Control Model
Hi @Mariangela Plot the vector field, and you should be able to understand the instantaneous dynamics at each point in the phas...

3ヶ月 前 | 0

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