ARMA Spectrum Characteristics of Throttling Orifice

This paper deal with the estimation of the fluid dynamic parameters and ARMA spectrum characteristics of a throttling orifice when the white noise NID (0, σ²_a) interferes with the input flow by time series analysis method. The relation of ARMA frequency spectra of upstream or downstream pressure to the fluid resistances or inductance or capacitance are presented, the method suggested in this paper can also be used to study other hydraulic components.