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Two methods are allowed in ISO 26262-5 for hardware analysis of random hardware failures. The 1st method is called “Evaluation of Probabilistic Metric for random Hardware Failures”. The 2nd method is called “Evaluation of each cause of safety goal violation”. Advantages of the 2nd method during development of ASIL D Generation 3 Electric Power Steering are presented in this paper. A reliability analysis is one of the important prerequisite for the hardware analysis and this paper shows the best practice for hardware part failure rate estimation using industry standards such as IEC TR 62380. The equally important focus is on a diagnostic coverage of each safety mechanism with respect to residual faults and with respect to relevant dual/latent point faults because any safety design can either benefit from low failure rates or from high diagnostic coverage of safety mechanism to mitigate faults. FMEA is highly recommended by ISO 26262-5 as a part of hardware analysis.

This work gives an introduction into possible tool qualification approaches, and then proposes a generic approach to tool qualification using a Tool Validation Suite Approach. Here “tool” is usually used in the sense of “integrated code generator tool with target compiler”. Central to the Validation Suite Approach is the use of an Automated Test Environment with capability of automatic execution of large numbers of test cases. The presentation also provides the results of an effort to systematically gather and structure all relevant requirements on a Validation Suite from existing and upcoming standards in a generic Validation Suite Requirement Catalogue ([5], attached after this article). The presentation provides examples of the various requirements and different requirement classes and explains the role of the requirement catalogue in the Validation Suite approach.

Today's Automotive ECU development is a global engineering exercise. It requires efficient planning, design and implementation. Time to market, innovative customer functions and cost effective design are key to success. Not only the technical realization with compressed time schedules and frequent change requests, but also the documentation, and the proof of compliance to ISO-26262 requires efficient solutions to be applied. Key to successful ECU development of complex safety critical systems inside a global team is a systematic approach to identify the ideal realization out of multiple design alternatives. This is why TRW Electronics Engineering for its Braking ECU products decided to design the new product generation with the help of Model Based System Engineering methods (MBSE).

The development of Steer-by-Wire (SbW) systems for on-road use is a challenging task. In a joint industry effort several companies have teamed up in the TTA-Group SbW Working Group to develop an architectural cookbook for SbW. The working group started with the development of a concept document. It adopts IEC 61508 for the development of a reference SbW architecture for on-road use. The main focus of the working group will be achieved in a second step where common parts of the electronic architecture will be developed.