Abstract

In connection with development of an automatic transmission electronic control unit (AT ECU), a development aid technology known as hardware in the loop simulation (HILS) was introduced for testing with the objective of improving AT control reliability and shortening the time required for development. In order to realize the HILS technology, it was necessary to assure the calculation accuracy in AT shift feeling simulation models and to perform real-time simulations using the existing digital signal processors (DSP). The present development improved the method of modeling the AT hydraulic pressure control system. HILS implemented multi-rating, reducing the scheduler overhead, thus making it possible to lighten the calculation burden on the central processing unit (CPU). As a result, it became possible to perform real-time simulations with assured calculation accuracy, which allowed HILS technology to be utilized during the development of the AT shift control system.

References

1. (1) Ishikawa, K., et. al.: The Development and Utilization of ACTASS, AVEC ’94, pp. 224-229 (1994)
2. (2) Sakuraba, T., et. al.: The Unification of Simulation Model between Fuel Economy and Acceleration Performance, HONDA R&D Technical Review, Vol. 7, pp. 79-86 (1985)

Author (organization or company)

• Yohei TAKEDA（Tochigi R&D Center）
• Ko YODA（Tochigi R&D Center）
• Satoshi TERAYAMA（Tochigi R&D Center）
• Kenji HAGIWARA（Tochigi R&D Center）
• Yoshiharu SAITO（Tochigi R&D Center）
• Tsutomu KAMIYAMAGUCHI（Tochigi R&D Center）

Publication Information

Article of Honda R&D Technical Review Vol.14 No.2 (99 - 106)

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Citation Information