公开(公告)号：EP0746855A4

公开(公告)日：1997-06-04

申请号：EP94918170

申请日：1994-05-27

Applicant: ARCH DEV CORP

Inventor： GROSS KENNETH C ,  HOYER KRISTIN K ,  HUMENIK KEITH E

IPC: G05B9/03 ,  G21C17/00 ,  G21C7/36 ,  G06G7/19

CPC classification number: G21C17/00 ,  G05B9/03 ,  Y10S706/914

Abstract: A method and system for monitoring an industrial process and a sensor. The method and system include generating a first and second signal characteristic of an industrial process variable. One of the signals can be an artificial signal generated by an auto regressive moving average technique. After obtaining two signals associated with one physical variable, a difference function is obtained by determining the arithmetic difference between the two pairs of signals over time. A frequency domain transformation is made of the difference function to obtain Fourier modes describing a composite function. A residual function is obtained by subtracting the composite function from the difference function and the residual function (free of nonwhite noise) is analysed by a statistical probability ratio test.

公开(公告)号：AU6960994A

公开(公告)日：1994-12-20

申请号：AU6960994

申请日：1994-05-27

Applicant: ARCH DEV CORP

Inventor： GROSS KENNETH C ,  HOYER KRISTIN K ,  HUMENIK KEITH E

IPC: G05B9/03 ,  G21C17/00 ,  G21C7/36 ,  G06G7/19

Abstract: A method and system for monitoring an industrial process and a sensor. The method and system include generating a first and second signal characteristic of an industrial process variable. One of the signals can be an artificial signal generated by an auto regressive moving average technique. After obtaining two signals associated with one physical variable, a difference function is obtained by determining the arithmetic difference between the two pairs of signals over time. A frequency domain transformation is made of the difference function to obtain Fourier modes describing a composite function. A residual function is obtained by subtracting the composite function from the difference function and the residual function (free of nonwhite noise) is analyzed by a statistical probability ratio test.