Model (In-)Validation from a H1 and perspective

We give a short overview on methods of Model (In-)Validation, that fit to the robust control framework. The idea is that the mismatch between a measured datum and an expected datum is explained by a disturbance signal w and an error model Delta, representing unmodelled dynamics. The key question is if there exists a pair (w,Delta), sufficiently small, that can produce the measured datum. In particular, we view the different approaches by Smith et.al. and Poolla et.al., their numerical solution and given examples