arma

arma — Scilab arma library

Description

Armax processes can be coded with Scilab tlist of type 'ar'. armac is used to build Armax scilab object. An 'ar' tlist contains the fields ['a','b','d','ny','nu','sig'].

armac

: this function creates a Scilab tlist which code an Armax process A(z^-1)y= B(z^-1)u + D(z^-1)sig*e(t)



-->ar=armac([1,2],[3,4],1,1,1,sig);
 
-->ar('a')   
 ans  =
 
!   1.    2. !
-->ar('sig')
 ans  =
 
    1.  
   
        
armap(ar [,out]): Display the armax equation associated with ar
armap_p(ar [,out]): Display the armax equation associated with ar using polynomial matrix display.
[A,B,D]=armap2p(ar): extract polynomial matrices from ar representation
armax: is used to identify the coefficients of a n-dimensional ARX process A(z^-1)y= B(z^-1)u + sig*e(t)
armax1: armax1 is used to identify the coefficients of a 1-dimensional ARX process A(z^-1)y= B(z^-1)u + D(z^-1)sig*e(t)
arsimul: armax trajectory simulation.
arspec: Spectral power estimation of armax processes. Test of mese and arsimul
exar1: An Example of ARMAX identification ( K.J. Astrom) The armax process is described by : a=[1,-2.851,2.717,-0.865] b=[0,1,1,1] d=[1,0.7,0.2]
exar2: ARMAX example ( K.J. Astrom). A simulation of a bi dimensional version of the example of exar1.
exar3: Spectral power estimation of arma processes from Sawaragi et all where a value of m=18 is used. Test of mese and arsimul
gbruit: noise generation
narsimul: armax simulation ( using rtitr)
odedi: Simple tests of ode and arsimul. Tests the option 'discret' of ode
prbs_a: pseudo random binary sequences generation
reglin: Linear regression

Author

J.P.C ; ;