This work presents a new approach to determine the remaining useful life for vehicle energy paths using design of experiments. In the context of semi- and highly-autonomous driving, the integration requirements, according to ISO 26262, will increase further. Energy paths are either designed to be robust or redundant to ensure the availability of safety-relevant functions. The diagnosis and prognosis of those energy paths offer a cost- and space-efficient alternative. To enable a diagnosis, it is of particular importance to monitor the degradation phenomena along supply paths that provoke failures. A prerequisite for this implementation is the timely reaction to the "worst-case" degradation process. Due to the requirement for a detachable connection, degradation phenomena occur, particularly on connectors. By using the presented approach, a connector’s potential influences and mechanisms are simulated in a laboratory environment. By varying the various influences according to the design of experiments procedure, the fastest possible system failure is identified. This "worst-case" scenario corresponds to the remaining useful life to be guaranteed by a predictive diagnosis. With this step, the reliable diagnosis of vehicle energy paths can be promoted as an alternative or complementary safety concept in the future.
Determining Vehicle Energy Paths’ Remaining Useful Life using Design of Experiments
2020-09-10
4095481 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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