Scaling of state-space models using prescale

Dear all,

I have been using the 'prescale' function provided with the control toolbox to scale my state-space model with ill-conditioned matrices. However, I need to know what algorithm 'prescale' uses and how it actually works. I cannot find any technical references on any of the help pages. Could someone please name the algorithm or point me to a reference.

Thanks. Mudassir

Answer 1

[Arkadiy Turevskiy]

Realizing the question was asked a long time ago, but providing answer for the record nonetheless.

The prescale command and GUI are described in the following doc pages: 1, 2.

You can also follow the algorithm be opening source code:

>> edit prescale.m