Bounding the parameters of linear systems with input backlash

In this paper we present a two-stage procedure for deriving parameters bounds of linear systems with input backlash when the output measurement errors are bounded. First, using steady-state input-output data, parameters of the nonlinear dynamic block are tightly bounded. Then, given a suitable PRBS input sequence we evaluate tight bounds on the immeasurable inner signal which, together with noisy output measurements are employed for bounding the parameters of the linear dynamic system.

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