首页|Dynamic Performance of Flow Control Valve Using Different Models of System Identification
Dynamic Performance of Flow Control Valve Using Different Models of System Identification
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NETL
NSTL
Trans Tech Publications Ltd
This study measures the dynamic characteristics of flow control valve by a self-developed square pressure wave generator (SPWG). Comprised of a revolving shaft and a fixed ring, SPWG generates square pressure waves by the differential function of rotation between these two critical components. With the highly sensitive piezoelectric pressure sensor as the reference sensor, tests are conducted concurrently using a flow control valve. Under the same experimental parameters, the dynamic characteristics of flow control valve are evaluated by four kinds of system identification methods, namely ARX (Auto-Regressive with exogenous input model), ARMAX (Auto-Regressive moving Average with exogenous input model), OE (Output Error model) and BJ (Box-Jenkins model). The experimental results indicate that the dynamic performance of the tested flow control valve for resonance frequency, resonance peak and damping ratio are 1565.6 Hz, 0.9753 db and 0.4044, respectively.
flow control valveoutput error modelresonance frequencydamping ratio
Ho Chang
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Department of Mechanical Engineering, National Taipei University of Technology, No. 1, Sec.3, Chung Hsiao E. Rd., Taipei 10608, Taiwan
NETL
NSTL
Trans Tech Publications Ltd
