Optimal gearshift control for off-road transmissions
Dana is evaluating a new optimal control approach for conventional off-road transmissions of the newest generation with improved energy-efficiency thanks to the added torque converter lock-up functionality. The new controller optimises the gear selection and the activation of the torque converter lock-up to minimise fuel consumption and at the same time ensures comfort by reducing the number of gear and lock-up clutch shifts. Furthermore, the model-based and parametric nature of the adopted strategy guarantees an easy reuse and tuning of the strategy for new types of transmissions. To ensure the real-time implementation in the transmission, the necessary computing power for the control algorithm has been limited. Simulation results show that the real-time implementation is able to mimic closely the best possible control action (calculated offline), with only a marginal fuel consumption increase. Currently, DANA is working on the experimental validation of the developed strategy on a full-scale instrumented driveline. When successful, the strategy will first be implemented on a test vehicle after which commercialisation will be considered by Dana.
SysML-model to generate safety documents
Commonly used functional safety procedures are often described in central documents. The same information is often listed in multiple documents and this may lead to control problems and risks for inconsistency and unnecessary expenses. Flanders Make developed a model-based approach for functional safety information. This is stored in a central SysML-model, from where this information is exported for analysis and documentation. Also the analysis results can be re-imported into the model.
Dana extended the SysML-model, making it possible to export documents to the right pdf-template. In case of changes, only the model needs adjusting instead of all these different documents. All newly generated documents immediately contain all changes. A second extension implemented by Dana is the handling of different product variants in the SysML-safety profile.
Use of prototype platform for localisation
Dana is evaluating technology that may increase the safety and efficiency of logistic operations. The technology prevents fork truck drivers from entering hazardous areas and provides real-time information on passable corridors. Such information can be displayed by way of a map that is updated in real time to reflect changes within the work area. This makes it immediately clear which areas are best avoided and which corridors are blocked. Flanders Make developed a platform for Dana to develop and test this product. The platform offers localisation information and creates a virtual map of the environment reflecting in real time all changes that are relevant to fork truck drivers.
Punch Powertrain, DANA & Grammer Electronics
Development of safety-critical systems
For describing processes, Punch Powertrain makes use of a Rational Method Composer (RMC), which is IBM-software based on EPF (Eclipse Process Framework). The company indicated that it would be useful if the FLAME-content (Flanders Make user-friendly web interface for reference processes for functional safety) would be available in EPF/RMC to facilitate the integration of functional safety information. To this purpose, Flanders Make developed tools that are able to extract FLAME-content from the EPF-data structure and import it in EPF/RMC. Meanwhile, the first release is a fact and Punch Powertrain has already integrated the developed tools in their RMC-environment.
Grammer Electronics performed a GAP analysis and mapped the differences between their current processes and the ISO 25119 standard. This generated a Grammer-specific Flame, which represents the basis for further process descriptions.
DANA has used Flame and is now integrating their processes in Flame.