Modelling an Electro-Hydraulic Poppet Valve

CFD analysis of the characteristics of a proportional flow control valve with an innovative opening shape

“…So far, it has been used in research involving different types of valves e.g. by Kuehnlein et al [28], Opdenbosch et al [29] and Muller and Fales [30]. The formulated mathematical model comprises equations of motion, flow balances of isolated volumes, flow equations through throttle gaps and orifices and geometrical equations.…”

Intelligent controls for electro-hydraulic poppet valves

“…The fault detection algorithm for the EHPV is based on the idea that if the inverse input-state map has been learned, then 3 It has been shown in Opdenbosch et al (2009Opdenbosch et al ( , 2008 that if the pressure difference across the EHPV remains above 0.4 MPa, then K v is nearly independent of DP and thus simply a function of i sol . 4 It is worth noting that learning of the low current region can also be accomplished.…”

“…The details of the simulation are discussed next. This simulation uses the model presented in Opdenbosch et al (2009) and represents the performance case given in Section 5. To evaluate the algorithm, the conductance of the EHPV was gradually increased at 10 s onwards.…”

“…1, is a solenoidoperated bidirectional proportional valve with an internal pressure compensation mechanism designed to ensure a consistent minimum amount of flow initiation current (Opdenbosch, Sadegh, Book, Murray, & Yang, 2009;Yang, Pfaff, & Paik, 2004, 2001. The EHPV's performance is characterized by its flow coefficient or conductance,…”

A dynamic model and performance analysis of a stepped rotary flow control valve

“…Firstly the poppet valve, it was developed by HUSCO international to implement independent metering control method form 11 . The poppet valve is known by difficulties in modeling because of its nonlinear characteristics 12 . An Easy5 model of the cartridge valve was developed to be used in system simulation 9 .…”