Design of safety -critical applications, a synthesis approach
Designing cost-sensitive real-time control systems for safety-critical applications requires a careful analysis of the cost/coverage trade-offs of fault-tolerant solutions. This further complicates the difficult task of deploying the embedded software that implements the control algorithms on the execution platform that is often distributed around the plant (as it is typical, for instance, in automotive applications). We propose a synthesis-based design methodology that relieves the designers from the burden of specifying detailed mechanisms for addressing the execution platform faults, while involving them in the definition of the overall fault-tolerance strategy. Thus, they can focus on addressing plant faults within their control algorithms, selecting the best components for the execution platform, and defining an accurate fault model. Our approach is centered on a new model of computation, Fault Tolerant Data Flows (FTDF), that enables the integration of formal validation techniques. We illustrate the results of applying the design flow to a Steer-By-Wire application from General Motors and a Drive-By-Wire application from BMW.
0540: Automotive materials