Patent · US Active

Control method and device that resolves closed loops in automatic fault tree analysis of a multi-component system

US11853048B2 · kind B2 · utility

0Cited by

1References

3Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Francesco Montrone · Riemerling, DE
Kai Höfig · Hersbruck, DE
Marc Zeller · Hersbruck, DE

Key dates

Filing date	May 9, 2019
Grant date	Dec 26, 2023
Priority date	—
Expiry date	Jan 29, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG05B2219/24085
WIPO fieldControl
WIPO sectorInstruments

Abstract

A computer-implemented method and device for resolving closed loops in automatic fault tree analysis of a multi-component system is provided. Also provided is a method for resolving closed loops in automatic fault tree analysis of a multi-component system, the closed loops corresponding, for example, to closed-loop control circuitry of a multi-component device. The closed loops are first identified in a top-down approach within failure propagation paths. Next, the loops are resolved by setting each loop interconnection to Boolean TRUE, adjusting the fault tree in a specific way and finally setting each loop interconnection to Boolean FALSE. Embodiments of the invention are relevant for analyzing safety-critical systems. However, the present concepts are not limited to these applications and may be applied to general use cases where fault tree analysis is applicable. The proposed solution advantageously provides a method that features linear complexity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.