The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 2026
Filed:
Feb. 07, 2020
Hitachi, Ltd., Tokyo, JP;
Hiroshi Shintani, Tokyo, JP;
Hisashi Tanie, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A failure probability evaluation device for a mechanical system includes one or more memory devices having a program stored thereon. When executed by one or more processors, the program causes the one or more processors to store a failure model that computes the failure probability of the mechanical system, and an occurrence frequency distribution of a probability variable. The one or more processors estimates a probability density function of an end portion of the occurrence frequency distribution, estimates a probability density function of a portion other than the end portion of the occurrence frequency distribution, and uses the probability density function of the end portion and the probability density function of the portion other than the end portion to estimate an entire probability density function. The one or more processors computes the failure probability of the mechanical system based on the entire probability density function and the failure model.