Abstract
Identification technique of a linear stable plant in the presence of unknown bounded disturbance is proposed. It makes use of a test signal with minimal quantity of harmonics (this value is equal to a plant state space dimension). Identification process consists of the output measurement of Fourier's filter excited by plant output and the solution of linear algebraic equations whose coefficients resulted in these measurements. Conditions for disturbance under which identification algorithm converges are derived. They may be examined by an experiment. A method of model validation are proposed. It makes use of a feedback that is built on the base of identified coefficients of plant.
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