Last year as part of the 2022.1 release of the VehicleDemos library, Claytex added a Hydrogen Fuel Cell Electric (FCEV) bus model. Created out of the existing EV bus example, it showcased integrating models from the Hydrogen Library with VeSyMA vehicle models. Ambitiously, a high level of detail was...
Archive for category: Tech Blog
The Suspensions library is full of experiments that test the full vehicle dynamics. However, it can be very difficult to validate models using full vehicle experiments, such as the common Kinematic and Compliance (KnC) test. This kind of test, as the name suggests, details the suspension kinematics (force and...
Sometimes it is useful to be able to determine the derivative of a function, for example when you require to use the derivative of the function directly. This post looks at how you can use Dymola to determine this for you while going through an example. Why calculate the...
A few years ago, I wrote a blog post about writing tidy code, pointing out that it’s a good idea to be disciplined when laying out a code layer. After all, you (or someone else) will be coming back to look at this code in the future, so laying...
A couple of weeks ago, I wrote a blog post about creating a simple multibody system model of an active ballast system, found on the Mercedes-Benz DTM/ITC car from the mid-1990s. It was not the only highly innovative technical development found on the DTM/ITC machines of that era. Constant...
Our motorsport library development originated from the need for real-time capable suspensions models to support hardware, software and driver-in-the-loop simulations in motorsport. To enable this innovative aggregate joint models were developed which are specifically designed idealised joints for real-time applications. Featuring a different concept of force and angle calculation,...
Evolving out of the ferociously popular German DTM series in the mid 1990s, the International Touring Car Championship (ITC) featured exotic and sophisticated racing cars; certainly, the most advanced production-based racing cars ever seen. Ballooning budgets from 3 large European manufacturers: Mercedes-Benz, Opel and Alfa Romeo, allied to a...
Beyond the usual assortment of settings and flags, there are a number of useful commands and functions which tell Dymola to do various things. These can be triggered by entering them directly into the Commands window or executed via a script. At times, running models from a script can...
In this blog post we look into the feasibility of manual library testing compared to a continuous integration process for library checking. Consider a very common scenario where one or more people are involved in model library development. Improvements and changes are made to components in the library each...
With Dymola storing data in .mat format, it can sometimes be difficult to extract the data for external use. In this blog post I will describe a couple of methods that can be used to export data to .csv files using Dymola scripts. Dymola can be controlled through other...
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