Steer-by-wire comes under scrutiny by working group - Embedded.com

Steer-by-wire comes under scrutiny by working group

LONDON — Component suppliers Carraro, Dana, Eaton, Lord Corporation, Ognibene, Sauer-Danfoss, SKF, and TTControl as well as vehicle manufacturers CNH, John Deere, Liebherr, Still, and Volvo Wheel Loaders, have joined the TTA-Group, a cross-industry consortium for time-triggered systems.

The companies will cooperate in the organisations Steer-by-Wire Working Group, whose mission is to define a certifiable reference architecture for a complete steer-by-wire application, without mechanical backup, for on-road and off-road use. The system's data communication is based on Time-Triggered Architecture (TTA).

Supervising inspection organizations will be RWTUV/TUV Nord, which joined TTA-Group as an affiliate member, and T”V S”D, which joined as a research partner.

The core activities of the working group include harmonization and development of standards and regulations including the derivation of functional and safety requirements, the generation of a technical template, and the concrete implementation of a system architecture.

The working group aims to develop a global guideline as base for a de-facto standard in order to enhance reliability, interoperability, and safety for steer-by-wire in special vehicles. A reference architecture will be defined to demonstrate that steer-by-wire is achievable at affordable costs. The development will be carried out by the members of the steer-by-wire working group. The supervising inspection organizations will be involved in the process from the beginning and will approve the final concept.

The certifiable reference architecture will be based on TTP (Time-Triggered Protocol), a low-cost and safe communication protocol that fulfills the maximum safety requirements at the aerospace level.

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