Sciweavers

Share
CDC
2010
IEEE

On subspace identification of cascade structured systems

10 years 6 months ago
On subspace identification of cascade structured systems
Subspace identification has proven useful when identifying identifying multi-input multi-output systems. It is, however, important in many applications to take a priori structural information into account in the identification, something that is difficult when using subspace methods. Here will study how to incorporate a special structure, a cascade structure with two subsystems. Two new methods are derived for estimating system with this structure. The problem when using subspace identification on cascade structured system is that the states from the first subsystem is mixed with states from the second subsystem via a unknown similarity transform. Hence after the identification the subsystems cannot directly be recovered. The first indirect method finds a similarity transform that takes the system back to a form such that the subsystems can be recovered. In the first step, the subspace method forms a estimate of the extended observability matrix, from this the state space matrices can ...
Per Hagg, Bo Wahlberg, Henrik Sandberg
Added 16 May 2011
Updated 16 May 2011
Type Journal
Year 2010
Where CDC
Authors Per Hagg, Bo Wahlberg, Henrik Sandberg
Comments (0)
books