Martin Otter
DLR Institute of System Dynamics and Control, Wessling, Germany
Bernhard Thiele
DLR Institute of System Dynamics and Control, Wessling, Germany
Hilding Elmqvist
Dassault Systèmes AB, Ideon Science Park, Lund, Sweden
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http://dx.doi.org/10.3384/ecp1207627Published in: Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany
Linköping Electronic Conference Proceedings 76:2, p. 27-36
Published: 2012-11-19
ISBN: 978-91-7519-826-2
ISSN: 1650-3686 (print), 1650-3740 (online)
Based on the synchronous language elements introduced in Modelica 3.3; a library is described to utilize the new features in a convenient way for graphical model definition of sampled data systems. The library has elements to define periodic; non-periodic and event clocks that trigger elements to sample; sub-sample or super-sample partitions synchronously. Optionally; quantization effects; computational delay or noise can be simulated. Continuous-time equations can be automatically discretized and utilized in a sampled data system. This is demonstrated by utilizing the inverse of a nonlinear plant model in the feed forward path of a discrete controller of a mixing unit.
