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the state representation of the dynamic system

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belal hariz belgacem
belal hariz belgacem on 6 Jun 2019
Commented: Walter Roberson on 6 Jun 2019
clear all
clc
k=2; k1=0.5; L=0.02;
R=2; J=0.0005; f=0.00008;Cr=20;
A=[-f/J k1/J;(-k-k1)/L -R/L];
B=[0 -1/f;k/L 0];
C=[1 0;0 1];
x=[1;1];
D=[0];
t=0:0.1:7;
[x,y]= lsim(A,B,C,D,);
Error using lsim (line 105)
Wrong number of input arguments.
Error in Untitled (line 11)
[x,y]= lsim(A,B,C,D,t);

  1 Comment

Walter Roberson
Walter Roberson on 6 Jun 2019
sys = ss(A, B, C, D);
[Y,T,X] = lsim(sys, U, t(:), x);
However this requires that you have a U array of inputs, that is length(t) x input channels, of inputs.Your system has two input channels so you might need x.' to make it into a row.

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