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how to define x-vectorm in M S-Function
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Hi a question
i cant understand how defined x-vector in m s-function (in simulink loop) ... and what process done on input in my sample m s-function code. input is a step function.my sample code is below
help please
function [sys,x0] =FT_Ball(t,x,u,flag)
%global kb
kb=12;
switch flag
case 1
sys(1)=3*x(2);
sys(2)=x(3);
sys(3)=(kb^3*u- 5*kb*x(3) - 6*kb^2*x(2)-kb^3*x(1));
case 3
sys(1)=x(1);
case 0
sys=[3,0,1,1,0,0];
x0=[0,0,0];
case {2,4,9} sys=[];
end
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Antworten (1)
Kaustubha Govind
am 14 Jan. 2013
You are required to return your computed states (the vector x) in Case 2 (mdlUpdate). Please read Maintain Level-1 MATLAB S-Functions for information on how each Case (method) is executed.
Also, it is highly recommended that you write a Level-2 MATLAB S-function instead of Level-1 (which is what you're writing) when creating a new S-function. The Level-1 interface was deprecated several releases ago and may not be supported in future releases of Simulink.
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