Answered
Fourier series and transform of Sinc Function
Hello @cikalekli, The second and third graph are both plots of the magnitude of the sinc() function, so it would appear that th...

24 days ago | 1

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Answered
How can i plot frequency contect of the signal with TF code?
The bode() command is one way to compute and visualize the frequency response of the transfer function. doc bode

25 days ago | 0

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Answered
im trying to plot this function, y= (exp(1i.*k.*pi./10).*(1-exp(-1i.*k.*2.*pi)))./(20.*(-1+(exp(1i.*k.*pi./10))));
syms y k y= (exp(1i.*k.*pi./10).*(1-exp(-1i.*k.*2.*pi)))./(20.*(-1+(exp(1i.*k.*pi./10)))); y is complex valued, e.g. subs(y,...

27 days ago | 0

Answered
Error using subs function of Symbolic Math toolbox
Use Torsten's suggestion, or syms a b S f(a,b,S) = a+a*b + b*S; Data =[ ]; for i = 1:10 Data =[Data ; [i, f(1,2,i)] ]; ...

27 days ago | 0

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Answered
How does the division operator work with transfer function objects?
Let's solve a simpler problem "by-hand" using the zpk format to see what's happening. Define the plant model: G = zpk([-1],[-2...

28 days ago | 1

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Answered
Does Simulink compiles a model when opening it?
doc open_system

28 days ago | 0

Answered
How to programmatically distinguish between different block type?
Well, it does appear that there are several blocks in the Discrete library that all have BlockType == 'Delay' As far as I can t...

28 days ago | 0

Answered
Why is Simulink Help Going to mathworks.com and Not Using my Local Help Browser?
Swithed the preference for documentation location to "Web, on mathworks.com," clcked Apply, switched back to "Installed Locally...

29 days ago | 0

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Control systems: Labelling multiple plots dynamically based on parameter ?
Here's a way to do it with a legend. s = tf('s'); Wn = 1; for zeta = 0.1:0.1:0.9 T = Wn^2/(s^2 + 2*zeta*Wn*s + Wn^2); ...

29 days ago | 1

Answered
Solving two second order ODEs
I think there are a few mistakes in the code syms U(t) V(t) %Constants definition a = 1; w = 100; dU=diff(U,t); dV=diff(V,...

1 month ago | 1

Question


Why is Simulink Help Going to mathworks.com and Not Using my Local Help Browser?
I right click on a block in my Simulink block diagram and click on Help in the pop-up menu. Doing so opens up the doc page on ma...

1 month ago | 1 answer | 0

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Answered
Want to change Matlab current folder to be the same as Simulink
The easiest thing to do is use addpath() once to add the location of the .slx file to the search path. Alternatively, add this ...

1 month ago | 0

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Answered
why are the output simulation results of the following LTI system different by using 'lsim' command and theorical method calculations?
I suspect the problem is that lsim() is ineherently an approximation to the LTI system response. I think that lsim() generates ...

1 month ago | 0

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Answered
Feature similar to feedback command in simulink
Two separate issues. The first is that, as you've discovered, it's (almost?) always better to use the feedback() command as for...

1 month ago | 0

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Answered
How to substitute the values of two variables in an expression at the same time - Matlab
Can you define Q1sym as a symfun? % simple example syms b t Q1sym(b,t) = b + t; b1 = sym(1:5); t1 = sym([ 1/2, 11/20, 3/5, ...

1 month ago | 1

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Answered
Why does kron(D,I), with D and I both sized (nxn), not create a matrix sized (n^2 x n^2)?
Because D is not 5 x 5 x = sym('x', [1 15], 'real'); D = diag(-x(1) -x(2) -x(3) -x(4) -x(5)) size(D) Perhaps you meant D =...

1 month ago | 1

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Answered
How to equate two equations and find one of the unknown from it as a function of second unknown?
syms et etplusone R1 = 1.5; ntone = R1 + etplusone + et; %%Equation(1) nttwo = log(R1) + 2*etplusone + et^2; %%Equation(2)...

1 month ago | 0

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Answered
How to obtain orthogonal (not orthonormal) vectors from "orth" or "qr"?
I think this at least illustrates what you're trying to accomplish. It might not be (probably isn't) the best way % generate so...

1 month ago | 0

Question


Are there Any Restrictions on Latex Markup in Figure Titles?
This works fine: syms t s1(t) = exp(-abs(t)); figure; title("$"+latex(s1(t))+"$",'Interpreter','latex') But this does not ...

2 months ago | 1 answer | 0

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Question


My Experience with Live Script is Not Meeting Expectations. Does it Meet Yours?
Following up from this question ... I've only been using Live Script for a few months now, but I've been using it over three ve...

2 months ago | 0 answers | 1

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Answered
Tips on how to write a transfer function with "e" on simulink
The exp(-sT) in G1(s) represents a delay of T seconds between the input and output of G1(s) (in addition to the effect of the 0....

2 months ago | 0

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Different vector length on plotting convolution of Hanning signal with Dirac Delta signal
It's easier to make it work if the signals are defined over the same time vector. And use the full convolution. dt = 0.1; xt= ...

2 months ago | 1

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Question


Is the Result from dsolve() Justified for a heaviside() Input?
This question is a follow up to this one that I feel warrants a separate discussion. The problem is ... Solve this differential...

2 months ago | 0 answers | 0

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errors with musyn -- Plant must have at least <> inputs and <> outputs
The plant model has 4 outputs and 1 input. If you look at doc musyn you'll see that the second (nY) and third inputs (nU) are...

2 months ago | 0

Answered
Solving an equation with integration constants and boundary conditions
syms sigma_r(r) A B p_2 r1 r2 sigma_r = A - B/r^2 % eqn = sigma_r == 0; % edit: commented out after posting original answer. N...

2 months ago | 1

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Answered
solution for symbolic equation: matlab can't find a solution for my equation
Use the ReturnConditions option to see all of the solutions syms x C Mo mom mom1 mus o l J(x) =(4*C*Mo*mom*mom1*mus*sin(o)*(C^...

2 months ago | 0

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How to express a variable (function) in terms of specific variables?
syms C_S C_CS C_BS C_C C_P C_B r1 r2 r3 k_A k_A1 k_S k_S1 k_D k_D1 Ct = C_S + C_CS + C_BS r1 = k_A*C_C*C_S - k_A1*C_CS; r2 = ...

2 months ago | 0

Answered
How to normalize state variables in ODE45 each timestep.
Some thoughts: a. If you know from the application that you don't have to worry about getting close to singularities, integrate...

2 months ago | 0

Answered
Feedin vector in feedback function for mimo systems
Try an example with a known solution. A = -diag(1:4); B = eye(4); C = eye(4); D = zeros(4); sysp = ss(A,B,C,D); sysk = ss(dia...

2 months ago | 0

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Question


How Can I Extract One Period of a Periodic Function that is Defined with Mod() ?
Suppose I have a function, for example syms t real f(t) = triangularPulse(-1,1,t) Now create its periodic extension using mod...

2 months ago | 0 answers | 0

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