# Birdman

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

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**Feeds**

Plotting a discrete impulse in Simulink

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

mer än 3 år ago | 0

| accepted

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 ...

mer än 3 år 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;...

mer än 3 år ago | 0

| accepted

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; ...

mer än 3 år ago | 2

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=...

mer än 3 år ago | 0

| accepted

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 ...

mer än 3 år ago | 0

Simulink stateflow condition for single pulse input

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

mer än 3 år ago | 0

| accepted

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...

mer än 3 år ago | 1

| accepted

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)...

mer än 3 år ago | 0

| accepted

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...

mer än 3 år ago | 2

| accepted

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]; ...

mer än 3 år ago | 0

| accepted

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...

mer än 3 år 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,...

mer än 3 år 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...

nästan 4 år 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...

ungefär 4 år 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))

ungefär 4 år 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...

ungefär 4 år ago | 0 answers | 0

### 0

answersHow is derivative made in Matlab ?

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

ungefär 4 år ago | 0

| accepted

Replacing characters in a string

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

ungefär 4 år ago | 1

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...

ungefär 4 år ago | 0

Function like "find" but for lines

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

ungefär 4 år 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.

ungefär 4 år ago | 0

| accepted

Solving non linear 2nd order differential equation

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

ungefär 4 år 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(...

ungefär 4 år 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...

ungefär 4 år 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...

ungefär 4 år 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; ...

ungefär 4 år ago | 0

| accepted

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(...

ungefär 4 år ago | 0

| accepted

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...

ungefär 4 år ago | 1

| accepted