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changeset 10263:d6546c47bba5 octave-forge

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control-devel: add fixme comments to arx
author paramaniac
date Wed, 16 May 2012 09:02:41 +0000
parents 03b7781d2f5e
children 75971c4ae9ad
files extra/control-devel/inst/arx.m
diffstat 1 files changed, 7 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/extra/control-devel/inst/arx.m	Wed May 16 08:00:43 2012 +0000
+++ b/extra/control-devel/inst/arx.m	Wed May 16 09:02:41 2012 +0000
@@ -27,6 +27,13 @@
 function sys = arx (dat, na, nb)
 
   ## TODO: delays
+  
+  ## FIXME: MIMO models have p error inputs, not just 1
+  
+  ## FIXME: Unlike SISO or MISO models, the transfer function
+  ##        B(z) over A(z) is wrong for MIMO models.
+  ##        We need a Matrix Fraction Description (MFD)
+  ##        y = A^-1(q) B(q) u(t) + A^-1(q) e(t)
 
   if (nargin != 3)
     print_usage ();