Electronic Circuit Modeling and Simulation in Modelica: January 2007
Electronic Circuit Modeling and Simulation in Modelica: January 2007
Electronic Circuit Modeling and Simulation in Modelica: January 2007
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Abstract
In recent years, three separate efforts took place at three different institutions to provide an
electronic circuit modeling and simulation capability within the framework of Modelica, an
object-oriented general-purpose environment for the modeling of physical systems. In order
to be generally usable, no domain-specific knowledge is hard-coded into the Modelica
software. Modelica only understands mathematics, not physics. Consequently, all domain-
specific knowledge must be formulated as part of the model. Recent advances in symbolic
algorithms and software technology have made it feasible to implement a full-fledged
electronic circuit simulator in Modelica without making unacceptable sacrifices on the run-
time efficiency of the resulting simulation code. What is being gained in the process is an
improved transparency of the models that are being implemented, a significantly improved
ease of maintainability and extensibility of the code, and a dramatically improved flexibility
in combining electronic models with mechanical and thermal models. These are demands that
industry now makes on a circuit simulator, demands that cannot easily be met using the
traditional approach to electronic circuit simulation.
4 AC analysis in BondLib
We shall now analyze a different circuit, namely a
high-gain operational amplifier circuit. The overall
model is shown in Fig. 13. The inverter itself is
shown in Fig. 14.