Abstract

In this paper, we propose a deterministic off-line identification method performed by using input and output data with a constant steady-state output response. The method can directly acquire any order of reduced model without knowing the real order of a plant, in such a way that the intermediate parameters are uniquely determined so as to be orthogonal with respect to 0-N-tuple integral values of output error and irrelevant to the unmodeled dynamics. From the intermediate parameters, the co-efficients of a rational transfer function are calculated. In consequence, the method can be executed for any linear single-input single-output plant without knowing or estimating its order at the beginning. The effectiveness of the method is illustrated by numerical simulations and also by applying it to a two-mass system.

Keywords:
identification, reduced order systems, transfer functions, linear systems, step response, data acquisition, numerical analysis, Identification, Direct Acquisition, Reduced Order Model, Step Response
Topics:
Computer simulation, Dynamics (Mechanics), Errors, Theorems (Mathematics), Transfer functions, Steady state, Signals
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