The importance of vehicle dynamics for ADAS and Autonomous Vehicle testing
There is a lot of effort being put into the development of virtual test environments for ADAS and AV. One aspect that seems to be ignored by many is the need for high fidelity road models and vehicle dynamics models. Whilst in the early stages of the development of...
Our Beta version of a Velodyne HDL-32E in rFpro
This week we will show you how to insert a state-of-the-art Lidar device within the virtual environment of rFpro. This will allow a user to easily stream and visualize the sensor output on any PC or storage device. The Velodyne HDL-32E is the latest Lidar device to be added...
Papers and Presentations at the 13th International Modelica Conference 2019
From the 4th to the 6th of March, Claytex attended the 13th International Modelica Conference in Regensburg, Germany. We arrived on the Sunday, ready to set up our stand on the next day at the conference venue, Ostbayerische Technische Hochschule (Eastbavarian Technical University). By lunchtime delegates were streaming in...
Can An F1 Car Drive On The Ceiling?
I don’t know about you, but I’ve heard “a Formula One car has enough downforce that it can drive upside down on the ceiling” so many times but have never had any proof of this. I, for one, would love to see this put to the test, but I...
Fault diagnosis and model debugging
When building and testing models of physical systems that interact with controllers, it is important to build in verification / diagnostics systems that check the communication between the controllers and the plant is valid. For example: in the case of an engine model, the response of the actuation of...
A closer look at solver tolerance
The solver tolerance determines the accuracy that the states in the model are solved within. This post has a closer look at what tolerance is, how the tolerance used in Dymola effects the accuracy of the results and how you can effect the tolerance of a given signal. For...
Navigating the Package and Component Browsers
New versions of Dymola are released every 6 months , and it can be easy to miss some of the more subtle changes between releases. So, this blog post is all about one such change you may have missed, the differences in the Package and Component Browsers in Dymola...
Virtual development and testing of autonomous vehicles – where to start?
I presented on this topic at a number of conferences in 2018 and thought it was about time to also add some of this to our blog to outline what we are developing. Background It is now well accepted that simulation will have to form part of the validation...
Making our lives easier: Default horizontal/x-axis time units
Background: Dymola is used in a wide range of physical system modelling applications. These might be automotive, energy (electrical power generation and buildings), food processing plants, and many more. Depending on the application we might want to plot the results in very different time scales. For example, for automotive...
The “Capture Parameters” command: For tidying models
In Dymola 2019 FD01 the functionality of Capture Parameters > As Model and Capture Parameters > As Favorite command was enhanced so that they can be used for tidying models that are extended from other models rather than from base classes. This blog entry describes this tidying process in...