Title:
ENGINE ABNORMALITY DIAGNOSIS METHOD, ENGINE ABNORMALITY DIAGNOSIS PROGRAM, AND ENGINE ABNORMALITY DIAGNOSIS SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/009904
Kind Code:
A1
Abstract:
This engine abnormality diagnosis method, engine abnormality diagnosis program, and engine abnormality diagnosis system, with which early detection and cause diagnosis of an engine abnormality are performed, involve execution of a step S2 for acquiring an initial state quantity of an engine model 10, a step S3 for applying the initial state quantity and utilizing the engine model 10, a step S4 for obtaining an estimated state quantity using the engine model 10, a step S5 for acquiring a measured state quantity of an engine 1, a step S6 for subjecting the residual error between the measured state quantity and the estimated state quantity to a nonlinear Kalman filter, a step S10 for applying a Kalman gain to the engine model 10 and repeating steps S4–S6, a step S11 for calculating a measured state quantity or a residual error correlation, a step S12 for performing a factor analysis on the measured state quantity or the residual error correlation to derive a factor load quantity, a step S13 for calculating a factor score from the factor load quantity and detecting an abnormality, a step S16 for applying the factor load quantity to machine learning, a step S17 for diagnosing the abnormality on the basis of the machine learning, and a step S18 for outputting the result of diagnosis.
Inventors:
BONDARENKO OLEKSIY (JP)
FUKUDA TETSUGO (JP)
MIYAKAWA SHUJIRO (JP)
MIYACHI KEN (JP)
FUKUDA TETSUGO (JP)
MIYAKAWA SHUJIRO (JP)
MIYACHI KEN (JP)
Application Number:
PCT/JP2021/025526
Publication Date:
January 13, 2022
Filing Date:
July 06, 2021
Export Citation:
Assignee:
NATIONAL INSTITUTE OF MARITIME PORT AND AVIATION TECH (JP)
MITSUI E & S MACH CO LTD (JP)
MITSUI E & S MACH CO LTD (JP)
International Classes:
F02D45/00
Domestic Patent References:
| WO2019175707A1 | 2019-09-19 |
Foreign References:
| JPH10339664A | 1998-12-22 |
Attorney, Agent or Firm:
ABE Shinichi et al. (JP)
Download PDF: