Simulation framework automates test procedures

February 06, 2012 // By Christoph Hammerschmidt
In today's automotive design process, simulating new vehicles or building blocks of vehicles has widely replaced the iterative process of building prototypes, testing them and modifying the design. Tesis Dynaware GmbH (Munich, Germany) provides a simulation framework that allows designers to create a virtual vehicle with all its domains. With its latest release 2.1, the simulation framework takes into account changing designer preferences.

Customers - that is, designers of electronic and mechanical subsystems as well as of entire vehicles - increasingly demand the option of integrating their own simulation models or third-party models - be it for advanced power train concepts, for sophisticated driving dynamics or for thermodynamic motor behavior. Release 2.1 of Tesis Dynaware's Dyna4 simulation framework has greatly increased connectivity options for this process; on the other hand it features a simplified handling. For instance, virtual test drives with Dyna4 now can be controlled by the Exam test automation software. As Freeware, Exam is rather popular in the industry.

In addition, the connection to the Medini Unite configuration and change management tool gives users the possibility compare models visually and thus comprehend model changes in Dyna4. What's more, Kuli models for heat management can be integrated into the Dyna4 model repository. This option is particularly useful to simlate the thermal behavior of powertrains in hybrid and electric vehicles. In addition, it allows detailed examination of the combustion process in conventional engines, helping engineers to optimize this process through electronic controls. Also useful for designers of electric vehicles is the possibility to import navigation data from open platforms and thus simulate tests on "real" roads. This enables designers to implement predictive energy management for HEVs or EVs.

The simulation process has been significantly streamlined, resulting in easier handling. For instance, test drives as PC simulation or has HiL (hardware-in-the-loop) simulation, the designer is no longer required to have Simulink expertise, a Tesis Dynaware spokesperson explained. Instead, he arranges the virtual test vehicle by menu options and then he configures the test maneuvers either in Dyna4 or in Exam.

In order to provide these enhanced options and functionalities, Dyna4 has been equipped with additional interfaces such as the generic XML-RPC API which enables users to integrate tools such as Exam and others. With these tools, designers can automate test drives, using standard ISO