For a multi-output ARX structure with NY outputs and NU inputs, the
orders [NA NB NK] define the model structure as follows:
- NA:
- an NY by NY matrix whose i-j entry is the order of the
polynomial (in the delay operator) that relates the
j'th output to the i'th output.
- NB:
- an NY by NU matrix whose i-j entry is the order of the
polynomial that relates the j'th input to the i'th output.
- NK:
- an NY by NU matrix whose i-j entry is the delay from
the j'th input to the i'th output.
The Order Editor allows the choices:
- NA = na*ones(NY,NY)
- NB = nb*ones(NY,NU)
- NK = nk*ones(NY,NU)
where na, nb, and nk are chosen by the pop-up menus.
For tailor made choices, construct a matrix [NA NB NK] in the
MATLAB command window and enter the name of this matrix in the
Orders: edit box of the Parametric Models dialog.
Help topics.
(file mvarx.htm)