# Birdman

Someone who is interested in Mathematics, Control and Engineering. Also, music as a hobby.

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**Content Feed**

Plotting a discrete impulse in Simulink

Try the attached model. See if it works for you. You can modify it.

8 months ago | 0

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how to change a variable value in the middle of simulation in simulink

Try the attached model. Copy the structure and replace it with the pulse generation block. It should work. Instead of writing p ...

8 months ago | 0

How can I save and plot all values of x and y for each value of C? x and y values are in the vertical axis and C in the horizontal axis in the graphic. I need to use the function "solve"

Try the following code: clear;clc; V=[1 2 3 4]; A=3; for i=1:numel(V) C(i)=A*V(i); syms x y eqn1=C(i)*x+y==2;...

8 months ago | 0

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finding an equation of the tangent line to a curve at the given point in MATLAB

Actually, it is quite simple to do. For instance, let's define the equation symbolically in MATLAB: syms y(x) y(x)=4*x-3*x^2; ...

8 months ago | 0

Solving differential equations with Simulink

If you consider the ramp imput as a function r(t)=t; then the equation becomes If you code this in MATLAB: syms x(t) eq=...

8 months ago | 0

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External Mode Error in Simulink - Using TI Piccolo F2803x

The main thing about External Mode is that you need to make sure that the code is running on the hardware before you try to run ...

8 months ago | 0

Simulink stateflow condition for single pulse input

Try the attached model. Note how the inside of Stateflow is built.

8 months ago | 0

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Square approximation with a second degree polynomial, function determine.

Simply, you need to use Curve Fitting app for this purpose. Define your Xi and f(Xi) vectors in MATLAB workspace. Then open Curv...

8 months ago | 1

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How to have a implicit function of a symbolic variable in our expressions and calculations

Simply, you can define symbolic functions just like symbolic variables: syms x y z f(x) A=(3*x+5*y+3*z+5)*(f(x)+z); diff(A,x)...

8 months ago | 0

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How to Find Kp,Ki for PI controller from Gain and Time Constant value Given

Simply, the conversion is as follows(Let K denote gain and Ti denote time constant): K*(1+1/(Ti*s)) is equal to Kp+Ki/s If y...

8 months ago | 0

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computing a sequence of vectors

Try the following code: n=1;L=1;d=1;q=1;%randomly given syms alpha C=0.5*q*sin(alpha)*[L+d]; D=0.5*q*sin(alpha)*[L^2/d]; ...

8 months ago | 0

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How to analyze signal and make proper filter?

If you want to have a starting point, following code basically takes the psd of the signal, so that you will be able to obtain t...

8 months ago | 0

How to put max function in symbolic function

Why would you try to name it as max? Simply, piecewise function in Symbolic toolbox would help you: syms x f(x)=piecewise(x<0,...

8 months ago | 1

Question

Receive Raw Ethernet Packet via Simulink

Hello, My question is simple: I would like to use Simulink, just like Wireshark, to capture and display raw ethernet packets. I...

1 year ago | 1 answer | 0

### 1

answerDerivate a function with two variable dependent of time

The following might help: syms r(t) theta(t) f(r,theta) f=r^2+0.2*cos(theta)-0.03 To take partial derivative, use functionalD...

1 year ago | 0

define tau in transfer function

The following might help: syms s t tau Cs=(1/s)*(1/(tau*s+1)); c(t,tau)=ilaplace(Cs) T=0:0.01:1; plot(T,c(T,0.1))

1 year ago | 0

Question

Capabilities of Building Standalone Simulation Applications in App Designer with Simulink Compiler

Hello everyone, For those who do not know, MATLAB released Simulink Compiler with 20a release which helps to build and deploy s...

1 year ago | 0 answers | 0

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answersHow is derivative made in Matlab ?

syms v(t) v(t)=t.^3-6t.^2+7; a(t)=diff(v); result=a(3.5)

1 year ago | 0

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Replacing characters in a string

One example(use regexprep): s="Yao Ming"; regexprep(s,{'Y','M'},{'J','Q'})

1 year ago | 0

How to update a variable in a function after every 5 seconds?

Run the attached model and see the results. You can change the Ramp block's Slope value and store different numbers. Output of t...

1 year ago | 0

Function like "find" but for lines

B=reshape(A.',1,[]); C=(1:numel(A)).*(B~=0); C=C(C~=0)

1 year ago | 0

Matrix with numeric values

N=4 A=1:N; B=char(64+A) 'ABCD' B(1) 'A' B(2) 'B' . . and so on. Change N and observe the results.

1 year ago | 0

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Solving non linear 2nd order differential equation

Try this: clear syms t Y0= input('wave amplitude ') ; %Wave ampli...

1 year ago | 0

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y[n] = x[n] - x[n-1] x[n-2] I need to find a) Find the transfer function. b) Give the impulse response. d) Sketch the frequency respo

Try this: z=tf('z',0.001); Gz=1-z^-1+z^-2; %%transfer function Gs=d2c(Gz,'tustin') %%impulse response figure(1); impulse(...

1 year ago | 0

How can I remove identical cell entries containing small arrays

The following code should simply do the job for you: unique(cell2mat(connect_group),'rows') After this, you can regroup the ar...

1 year ago | 0

Simulink-Sawtooth Decrease Counter

Try the attached model. Note that I didn't use Pulse Generator or Detect Decrease or Sum or Memory block. The model is very simp...

1 year ago | 0

how can I do this in mat lab

syms u(t) x(t) h(t) u(t)=piecewise(t>=0,1,0); x(t)=cos(pi*t)*(u(t)-u(t-1)); h(t)=1.5*(u(t)-u(t-1.5)); %%plot t=0:0.001:5; ...

1 year ago | 0

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Plotting the derivative of an "switch-funktion"

You may use Symbolic Toolbox and its beauties for this case :) Here is the code: syms y1(t) y2(t) y3(t) y4(t) y1(t)=piecewise(...

1 year ago | 0

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How can i fix the error 'Index exceeds the number of array elements (51)'

You need to apply elementwise division: x = [0:0.1:5]; y = sin(x)./x; plot(x, y), xlabel('xi'), ylabel('Theta'), title('Solut...

1 year ago | 1

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