Title:
FAILURE PROBABILITY EVALUATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/042733
Kind Code:
A1
Abstract:
The purpose of the present invention is to select failure-related time-series operation data from time-series operation data measured by a large quantity of sensors, and more accurately predict the remaining life of components constituting a mechanical system. The present invention is a failure probability evaluation system for evaluating the failure probability of components constituting a mechanical system, said failure probability evaluation system comprising: a maintenance history database that stores maintenance history data of the mechanical system; an operation database that stores a plurality of sets of operation data indicating the operation status of the components; a degree-of-dispersion calculation unit that, on the basis of the plurality of sets of operation data and the maintenance history data, calculates a degree of dispersion, which indicates the degree of variation of a failure probability function for calculating a failure probability for each set of operation data, and which corresponds to a correlation with failures of the components; and an operation data selection unit that selects operation data according to the calculated degree of dispersion. The failure probability evaluation system achieves the evaluation of the failure probability using, preferentially, the selected operation data.
Inventors:
WATANABE MASAHISA (JP)
SHINTANI HIROSHI (JP)
UEKI YOSUKE (JP)
AMIMOTO KAORU (JP)
SHINTANI HIROSHI (JP)
UEKI YOSUKE (JP)
AMIMOTO KAORU (JP)
Application Number:
PCT/JP2023/001915
Publication Date:
February 29, 2024
Filing Date:
January 23, 2023
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G06Q10/20; G01N17/00; G06Q10/04
Foreign References:
| JP2022055475A | 2022-04-08 | |||
| US20210240559A1 | 2021-08-05 | |||
| JP2021028751A | 2021-02-25 | |||
| JP2019160128A | 2019-09-19 |
Other References:
UEKI YOSUKE, AMAKAWA HIROAKI, NUMATA IPPEI, SANDO ATSUKI, NAKASHIMA MAKOTO: "Lifetime modelling for mechanical equipment by utilizing time-series data based-on the damage-based survival analysis (A trial for applying the model to the equipment in a chemical plant)", TRANSACTIONS OF THE JSME (IN JAPANESE), THE JAPAN SOCIETY OF MECHANICAL ENGINEERS, vol. 86, no. 886, 1 January 2020 (2020-01-01), pages 1 - 13, XP055909199, DOI: 10.1299/transjsme.20-00042
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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