FMI-3.0 Export for Models with a Clock in a Signal Flow Diagram Environment

Abstract

The FMI-3.0 standard, recently released, introduces several promising features, such as clocks and arrays. FMI-3.0 supports various clock types, including time-based clocks, triggered input, and triggered output clocks. Altair Twin Activate (TA), as a modeling and simulation environment, inherently supports hybrid systems combining continuous-time and discrete-time models. The discrete-time part is typically activated by events and clocks. The clock types provided by FMI-3.0, however, may differ from those in TA. In the paper (Najafi and Nikoukhah 2022), we explained how different clocks defined in FMI-3.0 can be successfully imported into TA. Building upon this, our current paper aims to demonstrate how various clocks used in TA can be used in the export of a subsystem in both FMI-3.0 and FMI-2.0 formats. Specifically, we will explain the way input periodic clocks and input triggered clocks are exported.