Simulation Scheduling of Variable-Structure Systems in OpenModelica
Keywords:Schedule, Variable-structure modeling, OpenModelica, OPC UA, Batch distillation, Steady-state, Sequential modular simulation
We propose and implement a generic scheduling frame-work for OpenModelica to eliminate the simulation code corresponding to inactive components in a system-level model. This framework allows the model developer to auto-generate models corresponding to the discrete behavior of the underlying system, and then schedule their simulations. It also provides a Scheduler library in the Modelica language to help the model developer easily generate the schedule. The benefit of this approach is demonstrated with and without real-time simulations of a batch distillation system. The proposed approach also helps implement a sequential modular simulation to arrive at initial guesses for flowsheets, whose equations can then be solved simultaneously using the standard, equationoriented, approach of Modelica.
Copyright (c) 2022 Rahul Paknikar, Nikhil Sharma, Priyam Nayak, Kannan Moudgalya, Bhaskaran Raman
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