State space modeling of time series
State space modeling of time series
Subspace algorithms for the stochastic identification problem
Automatica (Journal of IFAC)
Automatica (Journal of IFAC)
Experimental evidence showing that stochastic subspace identification methods may fail
Systems & Control Letters
Brief A stochastic realization algorithm via block LQ decomposition in Hilbert space
Automatica (Journal of IFAC)
Hi-index | 22.14 |
A finite-interval stochastically balanced realization is analyzed based on the idealized assumption that an exact finite covariance sequence is available. It is proved that a finite-interval balanced realization algorithm [Maciejowski, J. M. (1996). Parameter estimation of multivariable systems using balanced realizations. In S. Bittanti, & G. Picci (Eds.), Identification, adaptation, learning (pp. 70-119). Berlin: Springer] provides stable minimum phase models, if the size of the interval is at least two times larger than the order of a minimal realization. New algorithms for finite-interval stochastic realization and stochastic subspace identification are moreover derived by means of block LQ decomposition, and the stability and minimum phase properties of models obtained by these algorithms are considered. Numerical simulation results are also included.