Plant parameter detection by monitoring of power spectral densit

Details Plant parameter detection by monitoring of power spectral densit Plant parameter detection by monitoring of power spectral densit

1994-12-09

1998-08-04

Voeltz, Emanuel T.

Boots, shoes, and leggings

36455101, 36447416, G06F 1710, G06F 1714

Patent

active

057904138

ABSTRACT:
A method for determining whether a current state of a process variable output signal is within acceptable limits includes the following steps: establishing reference data by sampling a plant's process variable output signal when the plant is operating at steady state and analyzing the sampled output signal to derive normalized reference data including an energy content of each of a plurality of frequency components of the sampled output signal. The procedure establishes a current operational data base by sampling a process variable signal when the plant is in operation. The sampled current output signal is analyzed to derive current data including a normalized energy content of each of a plurality of its frequency components. For each common frequency component of the reference data and the current data, the procedure compares their normalized energy contents and issues a non-steady state signal if the comparison indicates that the compared energy contents exceed a predetermined limit.

REFERENCES:
patent: 3694637 (1972-09-01), Edwin et al.
patent: 3705516 (1972-12-01), Reis
patent: 3883726 (1975-05-01), Schmidt
patent: 4060716 (1977-11-01), Pekrul et al.
patent: 4303979 (1981-12-01), Kato et al.
patent: 4413519 (1983-11-01), Bannister et al.
patent: 4744041 (1988-05-01), Strunk et al.
patent: 4817176 (1989-03-01), Marshall et al.
patent: 4824016 (1989-04-01), Cody et al.
patent: 4965513 (1990-10-01), Haynes et al.
patent: 4965757 (1990-10-01), Grassart
patent: 4975633 (1990-12-01), Toda et al.
patent: 4980844 (1990-12-01), Demianenko et al.
patent: 5032826 (1991-07-01), Miller et al.
patent: 5087873 (1992-02-01), Murphy et al.
patent: 5201292 (1993-04-01), Grajski et al.
patent: 5305235 (1994-04-01), Izui et al.
patent: 5352891 (1994-10-01), Monnig et al.
International Search Report for Counterpart PCT Application No,. PCT/US94/03067.

Affiliated with

Also associated with

Rating

Plant parameter detection by monitoring of power spectral densit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Plant parameter detection by monitoring of power spectral densit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plant parameter detection by monitoring of power spectral densit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1184908