Linear and non-linear parameters e.g. resistance, estimating arrangement for e.g. failure diagnoses of transducer, has nonlinear estimator with output that receives error free nonlinear parameter, even if estimation error occurs

摘要

The arrangement has a nonlinear estimator (23) with a signal input connected to an output (67) of a transformation system (55). A linear parameter estimator (21) is connected with another output (63) of the transformation system. An output (27) of the estimator (23) is provided with an error free nonlinear parameter (Pn) of a model, even if specification of a transducer is incomplete, a linear parameter (P1) does not converge up to an optimal estimation value and an estimation error occurs. An output (25) of the estimator (21) receives error-free linear parameters of the model. An independent claim is also included for a method for estimation of linear and non-linear parameters of a model.