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Aide de Scilab >> CACSD (Computer Aided Control Systems Design) > armac

armac

Scilab description of an armax process

Calling Sequence

[ar]=armac(a,b,d,ny,nu,sig)

Arguments

a=[Id,a1,..,a_r]

is a matrix of size (ny,r*ny)

b=[b0,.....,b_s]

is a matrix of size (ny,(s+1)*nu)

d=[Id,d1,..,d_p]

is a matrix of size (ny,p*ny);

ny

dimension of the output y

nu

dimension of the output u

sig

a matrix of size (ny,ny)

Description

This function creates a description as a tlist of an ARMAX process

ar is defined by

ar=tlist(['ar','a','b','d','ny','nu','sig'],a,b,d,ny,nu,sig);

and thus the coefficients of ar can be retrieved by e.g. ar('a').

Examples

a=[1,-2.851,2.717,-0.865].*.eye(2,2)
b=[0,1,1,1].*.[1;1];
d=[1,0.7,0.2].*.eye(2,2);
sig=eye(2,2);
ar=armac(a,b,d,2,1,sig)
// extract polynomial matrices from ar representation 
[A,B,D]=arma2p(ar);

See Also

  • arma — Scilab arma library
  • armax — armax identification
  • armax1 — armax identification
  • arsimul — armax simulation
  • arma2p — extract polynomial matrices from ar representation
  • tlist — Objet Scilab. Définition d'une liste typée
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Last updated:
Thu Oct 02 13:54:31 CEST 2014