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RESEARCH PAPERS

Pressure Estimation From Oscillatory Signals Obtained Through BWR’s Instrument Lines

[+] Author and Article Information
Takao Akiyama

Energy Research Laboratory, Hitachi, Ltd., 1168 Moriyama-cho, Hitachi-shi, Ibaraki-ken 316 Japan

J. Dyn. Sys., Meas., Control 108(1), 80-85 (Mar 01, 1986) (6 pages) doi:10.1115/1.3143747 History: Received October 30, 1985; Online July 21, 2009

Abstract

Pressure signals obtained through a long skinny instrument line are usually disturbed because of fluid resonance oscillation. Therefore, such a problem is frequently encountered that an unperturbed pressure is desired to be estimated from the pressure signal. An estimation method consisting of a numerical inverse Laplace transformation was proposed to solve this problem. The validity of the method was evaluated for analytic models and an experimental system. This method was applied to the estimation of local pressures of a BWR nuclear power plant under transient tests.

Copyright © 1986 by ASME
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