Identification and modelling of nonlinear dynamic behaviour in analogue circuits

This paper presents a new approach for identifying nonlinear dynamic behaviour in analogue circuits. The approach facilitates the creation of models that more accurately reflect the dynamic behaviour of a circuit. It has been used in a fully automated, behavioural modelling tool, Ascend, that starts from the netlist description of the circuit and generates differential algebraic equation (DAE) based behavioural models. The underlying modelling approach is overviewed to provide a context for this research. Some demonstrative test results illustrate the effectiveness of the new method.