Toyota Relies on Software-in-the-Loop Simulation from dSPACE to Improve Electrification Development

Paderborn/Tokyo, 24.01.2023. As a pioneer in the electrification of passenger cars, Toyota Motor Corporation has been continuously developing hybrid vehicles since 1997 and has been a leader in vehicle electrification to date. As Toyota Motor Corporation continues to move forward with its electrification strategy, it is also actively developing new technologies and methodologies to ensure that the increasing amount of in-vehicle software development and validation is carried out in an efficient and reliable manner.

Of particular importance as a basis for new vehicle development is the powertrain with its corresponding electronic control units (ECUs). To develop and validate the powertrain, Toyota has strongly promoted the introduction of model-based development (MBD) and relies on the early use of simulation in the development process. At Toyota, software-in-the-loop (SIL) simulation is performed with VEOS, the PC-based simulation platform from dSPACE for process improvement, enabling the integration of virtual ECUs created with dSPACE’s SystemDesk software into a variety of plant models. Through SIL simulation, developers gain early insight into the powertrain and especially the relevant ECU software, which they can then use directly to develop and improve algorithms and entire systems. Developers at Toyota have reported shorter test cycles and more reproducible verification of results. Hirotaka Kaneko, who is responsible for powertrain test environment at Toyota Motor Corporation, reports, “With VEOS, we were able to benefit from a reliable software simulation platform from dSPACE for the validation of new powertrain controls and to front-load the control software development."

For the subsequent hardware-in-the-loop (HIL) simulation, forming a tool chain with dSPACE SCALEXIO enables the seamless use of test scenarios, parameterized models, and other results from SIL to HIL, reducing the effort required for verification and validation of production-ready ECUs. Toyota Motor Corporation has created a development platform that enables efficient evaluation of control software and ECU hardware by standardizing various tests, including automation, using SIL and HIL simulation platforms from dSPACE.

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