equivalent discrete system

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hagai bar
hagai bar 2011-6-3
if i have the A,B,C and D matrices of the continuous system, is there a way to get the equivalent discrete system(with a sampling time of my choice)? i know how to do the calculations myself to get As,Bs,Cs,Ds matrices but was just wondering if there's a function that can save me some time thanks

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Paulo Silva
Paulo Silva 2011-6-3
use the c2d function from the Control System Toolbox
Example from ctms
M = 1;
b = 10;
k = 20;
A = [0 1;
-k/M -b/M];
B = [ 0;
1/M];
C = [1 0];
D = [0];
Ts = 1/100;
sys = ss(A,B,C,D);
sys_d = c2d(sys,Ts,'zoh')

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