Szukana fraza: [Abstract = "The estimation problem of a model with known static gains of inputs is discussed and proper formulas are derived. This approach can overcome the non\-identifiability problem which has been observed during estimation based on measurements recorded in industrial closed\-loop control systems. The application of the proposed approach to estimation of a model for an industrial plant \(a water injector into the steam flow in a power plant\) is presented and discussed."]