IDD - Integrated Design process for on-board Diagnosis
Overview
Background & policy context:
The importance of diagnosis in on-board automotive systems is increasingly blending with the complexity of the systems. This important role has no equivalent in the design chain since diagnosis is currently only the last step in the design process. This situation leads to diagnostic functions that are often a compromise that could sacrifice part of environmental, customer and sometimes also safety requirements. The IDD project aims to solve this critical situation through the formalisation and standardisation of the diagnostic design process, and the realization of new tools for the designers that can help them in evaluating and understanding the effects of each choice on the system being designed. A success in reaching these objectives will lead to new systems with a higher degree of reliability and higher diagnostic performances with advantages for environment, safety and customer.
Objectives:
The project aims to make a contribution to re-organising the design process to include aspects of diagnosis in early steps. Main goal of the project is to develop a methodology for integrating the analysis of diagnosability and avoidance of fault effects in the design chain and a set of tools that support the designer in this analysis. This will be done by creating interfaces between currently used tools, such as CAD and numerical modelling, and simulation and advanced Model Based systems. The ultimate goal of this step is to improve performance of cars with respect to reliability, safety and environmental impact.
Methodology:
The re-organisation of the design chain with the introduction of diagnosis in an early stage of the system development can be achieved giving to designers appropriate tools and methodology. Applying techniques of Model Based Diagnosis, a new approach for the design process of OBD (on-board diagnosis) functions in vehicles can be defined, specified, implemented, integrated in a more usual model-based co-design process for functions.
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