Circuit Modeling in Dymola
Abstract
In this thesis, an alternative to Spice as an electrical circuit modeling and
simulation tool is explored. Spice has been a very popular automated circuit
analysis tool of industry and universities, alike. A new modeling tool, Dymola,
supports object-oriented modeling and can generate state-space models for
simulation in several different simulation languages: ACSL, Desire, Simnon,
SimuLink, and DSblock. In Dymola, objects are mathematically modeled as
implicitly described sets of ordinary differential equations. Dymola objects
may then be interconnected to form more complex systems.
This thesis develops a library of PNP and NPN bipolar junction transistor
models, and investigates use of the transistor models as subcomponents to more
complex circuits such as operational amplifiers. The simulation results are
compared to those obtained from two Spice dialects, and are discussed in terms
of accuracy, efficiency, flexibility, and robustness.
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Last modified: March 15, 2006 -- © François Cellier