Evaluation of Parallel Executions on Multiple Virtual ECU Systems

Paper #:
  • 2018-01-0011

Published:
  • 2018-04-03
Abstract:
We have developed the multiple virtual power window system with CAN model including a parallel execution mechanism. The power window model consists of electronic - mechanical model and a CPU model. Each simulator with a different execution speed cooperatively executes by a synchronization mechanism that waits at a specific time and exchanges data. A virtual ECU simulated microcontroller hardware operations and executed step-by-step its control program in binary digital code. Therefore, production-ready codes of ECUs are of primary interest in this research. As an inter-simulator synchronization mechanism, we developed an environment that combines the synchronization mechanism of D-EIPF which synchronously executes heterogeneous simulators and the model of in-vehicle communication CAN connecting each ECU. This indicates that the interaction between the ECUs can be confirmed with the binary code of the product version. We have evaluated the simulation speed by using multiple virtual power window system with parallel execution. And, simulation of the configuration that each simulator sequentially executes was also evaluated. The simulation speed is 60% faster by parallelization. This was able to see the effect of parallel execution. This method is applied to the ECU model and mechanical model system that was confirmed to work together in a virtual environment. In this development environment, it is possible to synchronously execute simulators executed on different PCs as well as on one PC. This means that large-scale simulation including detailed simulation of binary code can be performed by executing a large number of simulators in parallel. Finally, this work was one of the outcomes of the vECU-MBD WG (Virtual ECU Model-Based Development Working Group) in Japan.
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