The problem of modeling dynamic systems using fuzzy relational systems is investigated. A dynamic system is modeled using a static fuzzy relational system where the dynamics is brought into the model by tapped delay lines. Both the internal and the external feedback topology are relayed. It is shown that in the limit the internal feedback topology can generate a null linguistic representation of the state in the absence of normal fuzzy sets at the inputs of the static model. For handling this several schemes are considered, namely it is advocated the use of pretuned fuzzy model I/O interfaces as regenerative devices. A case study is presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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