14th IFAC Symposium on System Identification, SYSID 2006

SYSID-2006 Paper Abstract


Paper ThB2.4

Gerdin, Markus (Linköping Univ.), Glad, Torkel (Linköping Univ.)

On Identifiability of Object-Oriented Models

Scheduled for presentation during the Regular Session "Identifiability and Model Selection" (ThB2), Thursday, March 30, 2006, 16:30−16:50, Banquet Room

14th IFAC Symposium on System Identification, March 29 - 31, 2006, Newcastle, Australia

This information is tentative and subject to change. Compiled on September 24, 2018

Keywords Identifiability, Grey Box Modelling


When estimating unknown parameters, it is important that the model is identifiable so that the parameters can be estimated uniquely. For nonlinear differential-algebraic equation models with polynomial equations, a differential algebra approach to examine identifiability is available. This approach can be slow, so the present paper describes how this method can be modularized for object-oriented models. A characteristic set of equations is computed for components in model libraries, and stored together with the components. When an object-oriented model is built using such models, identifiability can be examined using the stored equations.