the state representation of the dynamic system

state equation

A B

exit equation

C

K=2; K1=0.5; L=0.02; R=2; J=0.0005; f=0.00008; Cr =20 N.m

Answer 1

[Priysha Aggarwal]

Error is in line 8

x = A*x + B*U

To be able to multiply A with x, you need to predefine x. You cannot initiate a variable x with an equation which already has x in it.

Solution :

x = 1 %replace 1 by whatever initial value of x is required
x = A*x + B*U

[belal hariz belgacem]

the programme not work

I want to extract curves

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 in Untitled (line 11)

[x,y]= lsim(A,B,C,D,t);

Error in Untitled (line 11)

[x,y]= lsim(A,B,C,D,t);

>> Untitled

Error: File: Untitled.m Line: 11 Column: 21

Unbalanced or unexpected parenthesis or bracket.

Answer 2

[belal hariz belgacem]