From help-request at octave dot org Wed Feb 15 12:40:37 2006
Subject: Error in lqe documentation
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: A S Hodel <hodelas at mac dot com>
Cc: help at octave dot org
Date: Wed, 15 Feb 2006 13:39:45 -0500

On  2-Jan-2006, A S Hodel wrote:

| The current lqe documentation reads:
| lqe is the user-defined function from the file
| /sw/share/octave/2.1.71/m/control/base/lqe.m
| 
| -- Function File: [K, P, E] = lqe (A, G, C, SIGW, SIGV, Z)
|       Construct the linear quadratic estimator (Kalman filter) for the
|       continuous time system
| 
|            dx
|            -- = a x + b u
|            dt
| 
|            y = c x + d u
| 
| The differential equations listed are incorrect and do not correspond  
| to the input parameters.  They should be
| 
|            dx
|            -- = a x + G w
|            dt
| 
|            y = c x + v
| 

I fixed this in the current CVS sources for 2.9.x.

Thanks,

jwe



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