公开(公告)号：US20160003695A1

公开(公告)日：2016-01-07

申请号：US14768937

申请日：2014-01-31

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kouta OISHI ,  Kuniyasu MATSUMOTO

IPC: G01L5/22

CPC classification number: G01L5/22 ,  G06F17/5018 ,  G06F2217/16 ,  G06Q10/04

Abstract: A relational expression calculator calculates a relational expression by performing approximation calculation for data strings each of which associates the value of a subject factor, which varies according to a user or an environment, with an input stress measurement value that is measured when a subject device is used. An input stress calculator calculates an input stress, which is input to the subject device, according to the relational expression and to index data on the subject factor. A failure rate calculator calculates a failure rate of the subject device according to the input stress and to a characteristic value distribution of the subject device.

Abstract translation: 关系表达式计算器通过对数据串进行近似计算来计算关系表达式，每个数据串将根据用户或环境变化的被摄体因子的值与当被摄体装置是 用过的。 输入应力计算器根据关系式计算输入到被摄体装置的输入应力，并根据被摄体因子对索引数据进行索引。 故障率计算器根据输入应力和本体装置的特征值分布来计算被检体装置的失败率。