A model-based control system for controlling a state of an operating subject such as an engine, characterized by forming an inverse model using a forward model and a feedback control system. The subject is modeled using first-order lag elements and dead time, and dead time is removed from the feedback...http://www.google.de/patents/US5925089?utm_source=gb-gplus-sharePatent US5925089 - Model-based control method and apparatus using inverse model
