System Identification


sys_id 

Overview

A numerical algorithm for reconstructing continuous-time linear models with pure integrators from their discrete-time equivalents is derived. The algorithm treats the reconstruction problem in the frequency-domain and establishes a numerically tractable z-domain to s-domain mapping, which avoids the need for software packages with symbolic mathematical solving capabilities. The proposed algorithm can be conveniently implemented using standard building block numerical routines and has been recently employed in a computer-aided control systems design software package. Unlike other approaches, this algorithm is shown to avoid unnecessary computations, which typically result in numerical burden, ambiguity, and singularity. A numerical example is given demonstrating the application of the proposed algorithm.

Related Publications

  1. A numerical algorithm for reconstructing continuous-time linear models with pure integrators from their discrete-time equivalents
    Z. Kassas and G. Morrow
    IEEE International Symposium on Computer-Aided Control System Design, Sep. 3-5, 2008, San Antonio, TX, pp. 377-382