公开(公告)号：US20210164406A1

公开(公告)日：2021-06-03

申请号：US17046943

申请日：2019-03-25

Applicant: JAPAN AEROSPACE EXPLORATION AGENCY

Inventor： Toshio NISHIZAWA ,  Junichi KAZAWA ,  Hiroshi GOTODA ,  Hiroaki KOBAYASHI ,  Yuto HAYASHI ,  Takayoshi HACHIJO

IPC: F02C9/28 ,  F02C9/16 ,  F02C7/32 ,  G06F17/11

Abstract: [Object] To observe the sign or occurrence of an unstable operation of a turbo-machine. [Solving Means] An observation apparatus 1 includes: a detection unit 10 including one or two or more sensors 11, 12 that are disposed in a turbo-machine 2, are highly time responsive, and observe unsteady fluctuations of the turbo-machine 2; a computation unit 20 that output signals from the one or two or more sensors 11, 12 every moment, stores time series data for a predetermined period, and calculates in real time a parameter for detecting an unstable operation of the turbo-machine; and a determination unit 30 that compares the parameter for detecting the unstable operation with a predetermined threshold and outputs in real time a determination result of a sign or occurrence of the unstable operation.