DIAGNOSTIC METHOD OF FLUID ROTARY MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a highly accurate diagnostic method of fluid rotary machines capable of setting unified criteria of judgement. SOLUTION: A first state data group of finite dimension is acquired by measuring a first state signal group made of a plurality of state signals indicating the state of a fluid rotary machine 11 at prescribed time intervals when the fluid rotary machine 11 previously having a machine element at a rotary part is normal. A second state data group of finite dimension is acquired by measuring a second state signal group made of a plurality of state signals indicating the state of the fluid rotary machine 11 at prescribed time intervals when the fluid rotary machine 11 is inspected. First and second time-serial matrices are created by converting the first and second state data groups into first and second dimensionless parameter groups. The first and second matrices are computed as one multivariate Kullback-Leibler quantity of information to judge the state of the fluid rotary machine 11. COPYRIGHT: (C)2006,JPO&NCIPI