Modelling and experimental validation of a nonlinear proportional solenoid pressure control valve
2016 (English)In: International Journal of Fluid Power, ISSN 1439-9776, Vol. 17, no 2, 90-101 p.Article in journal (Refereed) Published
This paper investigates the static and dynamic behaviour of a pressure control valve with nonlinear negative characteristics. The pressure control valve has both reducing and relieving capability and is actuated by a solenoid. The static characteristics have been measured over the entire working range, covering the dynamic response of the solenoid, as well as the complete valve. A model is proposed that considers the flow as a mix of laminar and turbulent flow and flow forces with a flow angle that varies with the stroke of the spool. The model shows good agreement with measurements. The investigations show that the flow forces decrease with higher flow rates as a result of a flow angle that tends to go towards a vertical angle. This results in an increase in pressure with flow during pressure reducing mode. A linear analysis is also presented, explaining this as a negative spring constant in the low frequency range. Stability is, however, maintained.
Place, publisher, year, edition, pages
2016. Vol. 17, no 2, 90-101 p.
Nonlinear modelling, solenoid, pressure control valve, linear analysis
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:liu:diva-130036DOI: 10.1080/14399776.2016.1141636OAI: oai:DiVA.org:liu-130036DiVA: diva2:946441