This blog post is a continuation from a previous post on the Modelica Language. This blog post goes into a little more detail regarding variable definition and syntax in equations and algorithms. The Class Restriction of a class can restrict the ability to use certain elements and methods, also described...
Background – Why does steering feel matter? Creating a realistic feel to the steering of a vehicle model is very important for DiL simulations, due to the role torque feedback through the steering wheel plays in how the driver interprets the dynamic response of the vehicle. A vehicle with...
Dymola provides a means to measure where the CPU time is being spent in the model code execution. This feature is known as profiling. Profiling is described in Section 5.7.5 of the Dymola User Manual Volume 1. This blog article supplies further information. Profiling is implemented by inserting timers...
Often, it is helpful to create a collection of variables at the experiment level of a simulation which will serve as an output data repository. Part 1 of this topic on output data organization will outline one way to do this efficiently for the variables that are common across...
Once you’ve got comfortable with creating models using components in the Diagram layer you will probably need to create your own models. This requires understanding and implementation of the Modelica language. This, like any other coding language, must be written in the correct order, with the correct punctuation. This...
Abstract: This blog post is aimed to describe the Find Connection command available in Dymola. This Dymola command is helpful for searching of signals created within large Modelica models especially using Modelica expandable connector. For demonstrating the features of this command, a Hybrid Electric Vehicle example available in a...
There are lots of reasons why a model can fail and sometimes it feels like an endless battle just keeping models running. But what do you do if there is a model that used to run and for some unknown reason it just doesn’t any more? Or a model...
Have you ever picked up someone else’s Dymola models (or even ones you’ve built in the past) and thought to yourself – WHAT A MESS!? – or WHAT IN THE WORLD WAS I DOING HERE?! Organization is the first step to eliminating this sort of response. When creating models...
Abstract: This article is aimed to present Modelica-based simple tic and toc functions and their implementation in Dymola. These functions are created to estimate the total elapsed computer processing unit (CPU) time of repeated model experimentations in Dymola. For this purpose, the getTime() function from Modelica Standard Library (MSL)...
Development of multibody models and systems can be complex, even when dealing with one orientation; but they can get a lot more complicated to understand and build when there are multiple orientations used within the same system. This post aims to improve understanding of multibody orientations; and build practical...
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