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# Birdman

##### Last seen: 7日 前
1,099 2017 年以降の合計貢献数

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

#### Birdman's バッジ

TMS320F28379D: Code Generation Error while Using CLA Task Trigger block in Simulink
Hello, I am using Launchpad F28379D in Simulink. I have a problem while generating code for a CLA Task triggered subsystem whic...

2ヶ月 前 | 0 件の回答 | 0

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Numerical Integration from -Inf to Inf
Try the symbolic approach and consider the problem as follows: syms x F(x)=x*(x+0.1)^2*exp(2*(x+0.1)^2*3^2)*exp(-x^2); After ...

3ヶ月 前 | 0

Helping solving two variables in an equation
Try the following: Kt=[12 -1; -1 3]; I=[1 0;0 1]; lambda1=2.8902; w1=1.7001; V1=sym('V1',[2 1]); eqn=((Kt-lambda1*I)*V1)==...

3ヶ月 前 | 1

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Error when compiling with CLA on TI C2000 MCU in Simulink. Can't find "cla_header.h"
How did you solve this problem?

3ヶ月 前 | 0

Looping a matrix to find determinant
Following way can be a starting point: A=randi([1 5],8267,4);%%random data for i=1:max(size(A))-3 DetVal(i)=det(A(i:i+3,1...

11ヶ月 前 | 0

How to extract two equal maximum values at different index
index=find(A==max(A)) This should give you the indexes.

11ヶ月 前 | 0

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Strange behavior of diff function with symbolic variables
Hello everyone, There is a strange behavior that I encountered while using diff function with symbolic variables, not functions...

12ヶ月 前 | 1 件の回答 | 0

### 1

Assign different value of step response to a transfer function at different time intervals
You can do it with a Signal Builder. I attached the Simulink model. Take a look.

how to plot constant gain with bode
To plot Bode of constant, define it as a transfer function but in the following way: Gs=tf(R1/(R1+R2),1); bode(Gs);

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How to write time dependent exponential with simple Simulink blocks
Try this attached model.

"solve " function returns inaccurate solutions
Try this: syms x assume(x,'real'); solx=vpasolve(x-sqrt(x+1)-sqrt(x-1)==0,x) or syms x assume(x,'real'); solx=vpa(solve(x...

matching from multiple arrays
One way: Result=double(ref & (ref==a{1} | ref==a{2} | ref==a{3}))

Just wondering how to I plot these functions into Matlab?
Try this: syms x(t) h(t) x(t)=piecewise(t>=-1 & t<=1,1,t<-1 | t>1,0) h(t)=rectangularPulse((t-1)/4) t=-5:0.01:5; ...

1年以上 前 | 0

How to construct a vector from specific elements in a matrix
B=[A(1,2);A(2,3);A(3,1)]

1年以上 前 | 1

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differentiation for a function
syms y(x) diff(diff(y,x)==x-y^2)

1年以上 前 | 0

How to delay a boolean signal by an amount of time?
Simply, use a *Delay* block. See the attached pictures for details.

1年以上 前 | 0

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I can I do logical indexing on a column
Is it possible for a value to be smaller than -8 and greater than 8 at the same time? Check your logical operator. You need _OR_...

1年以上 前 | 0

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Of course it can be done. Check the attached files.

1年以上 前 | 1

NEED HELP IN MATLAB GUI FOR FOLLOWING CODE
Check the attached zip file. In screenshot, you will see how to enter x and y vectors and you will see that you obtain the resul...

1年以上 前 | 0

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Can I get the formula from the result value?
You may use *Curve Fitting Toolbox* for adapting formula(or function let's say) for your input and output values. There are seve...

1年以上 前 | 0

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I have a row vector consisting of 200 engine speeds. I want to feed one value at a time into an alternator block. How do I do it?
Use *From Workspace* block. Define your data at your workspace, and also define a time vector. These two vectors should be nx1, ...

1年以上 前 | 0

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Stuck with symbolic variables
You need to also convert your numerical array into *symbolic* so that things will be possible. For instance: c=sym(c) c(...

1年以上 前 | 0

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function [CM KG]=STtosi(In,Ib) It is not working
Since you did not mention why the function is not working, it may have two reasons: - Firstly, you need to save your function...

1年以上 前 | 0

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Why do I receive an error message about output arguments for my Embedded MATLAB Function in Simulink?
Simulink wants to know the initial value and size of your output at the very beginning of the simulation. Therefore, add D=0...

1年以上 前 | 0

Summing the diagonal of a matrix "the other way"?
This can be done as follows: res=[sum(diag(fliplr(A),3)) sum(diag(fliplr(A),2)) sum(diag(fliplr(A),1)) sum(diag(fliplr(A)))]...

1年以上 前 | 1

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Error states 'Subscript indices must either be real positive integers or logicals' when trying to complete this for loop?
You can not subscript *element zero* of an array. Change your for loop to for i = 1:numel(range) Ti_in(i) = Ti_in -((I...

1年以上 前 | 0

can anybody help me with the error?
Make sure that _TrainFeature_ (I assume it is a function) is located in your current working directory.

1年以上 前 | 0

How to generate values between 5 and 4 with difference 0.1 without subtract symbol?
5:-0.1:4

1年以上 前 | 1

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How do I perform Partial differential equation by Simulink?
You can't. Only numerical derivatives with respect to time can be calculated in Simulink.

1年以上 前 | 0

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What does 'y:' stand for in plot command?
It means a _dotted yellow line_. For that, you may check the documentation of *plot* command. That third input argument decides ...

1年以上 前 | 0

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