Simulation apparatus and simulation method for a system having analog and digital elements

Abstract

A simulation apparatus for a system has at least one analog and at least one digital element, in particular an electronic system. The simulation apparatus has an apparatus for solving differential algebraic equation systems based on a one-step method for automatically producing a data record with a simulation event. A detector is provided for automatically determining that a threshold value has been exceeded within one time step in the simulation event. The detector determines whether the simulation event is greater at the end of the respective time step than a predetermined tolerance of the respective threshold value. The detector automatically reduces the time step if the tolerance is exceeded, until the tolerance is undershot, in order to determine the point at which the threshold value is exceeded. A transformation device uses values calculated previously for this purpose. It is thus possible to simulate mixed digital-analog systems particularly efficiently.

Dependencies are inferred from the claim text.