Generating FMUs for the Feature-Based Language Bloqqi

Abstract

In this paper, we describe how we generate Functional Mock-up Units (FMUs) for the automation block language Bloqqi. This allows Bloqqi control programs to be tested with simulations of the physical processes they control. The physical process can be specified in any tool that supports the Functional Mockup-Interface (FMI) standard. For example, we have successfully run Bloqqi programs together with Modelica models exported as FMUs. Bloqqi programs execute at discrete times, and we describe how this is handled in the implementation of the DoStep function, specified in the standard.The Functional Mock-up Interface (FMI) is a toolindependent standard with support for both model exchange and co-simulation of dynamic models (Blochwitz et al., 2012). Version 1.0 of the standard was released in 2010, followed by version 2.0 in 2014. Using the FMI standard, models can be shared across all the 100+ tools that are currently supporting the standard. FMI uses a combination of XML-files and compiled C-code to create a Functional Mock-up Unit (FMU). An FMU is a zipfile with two major parts: a model description in XMLformat, and a number of compiled binaries. Each FMU

Open Source Languages and Methods for Cyber-Physical System Development: Overview and Case Studies

“…Bloqqi programs can be exported as co-simulation FMUs [52], which allows them to be tested with simulations of the processes they control. This enables Bloqqi programs to be tested with models specified in any tool that supports co-simulation FMUs.…”

Proceedings of the 2nd Japanese Modelica Conference Tokyo, Japan, May 17-18, 2018

“…Thus, the Bloqqi compiler will retain the the hierarchy between diagrams. Both implementations make extensive use of non-terminal attributes (Vogt et al, 1989), which allows dynamically computed subtrees to be added to the abstract syntax tree in the compiler.…”