Sökning: id:"swepub:oai:DiVA.org:kth-55388" >
On subspace identif...
On subspace identification of cascade structured systems
-
- Hägg, Per (författare)
- KTH,Reglerteknik,ACCESS Linnaeus Centre
-
- Wahlberg, Bo, 1959- (författare)
- KTH,Reglerteknik,ACCESS Linnaeus Centre,System Identification Group
-
- Sandberg, Henrik (författare)
- KTH,Reglerteknik,ACCESS Linnaeus Centre
-
(creator_code:org_t)
- IEEE, 2010
- 2010
- Engelska.
-
Ingår i: Proceedings of the IEEE Conference on Decision and Control. - : IEEE. - 9781424477456 ; , s. 2843-2848
- Relaterad länk:
-
http://www.scopus.co...
-
visa fler...
-
http://ieeexplore.ie...
-
https://kth.diva-por... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- In identification it is important to take a priori structural information into account in many applications, 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 are mixed with states from the second subsystem via a unknown similarity transform. The first indirect method finds a similarity transform that takes the system back to a form such that the subsystems can be recovered. The second method uses the fact that the structure of the extended observability matrix is known for cascade systems. However, it only works when both subsystems have order one. In practice this is still a common case. The results of the two methods seem promising, as illustrated by applying the methods to a real process, the double tank process. The performance is comparable with state of the art methods. Finally the problem of optimal input design for cascade systems are introduced, and illustrated by a simple example.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
Nyckelord
- Cascade structures
- Cascade systems
- Indirect methods
- Observability matrix
- Optimal input design
- Real process
- Special structure
- State-of-the-art methods
- Structural information
- Structured systems
- Sub-space methods
- Subspace identification
- Identification (control systems)
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
Hitta via bibliotek
Till lärosätets databas