NDLI: Stability and Performance Analysis of a Metering Poppet Valve

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Fales, Roger
Copyright Year	2005
Abstract	Poppet type metering vales have many benefits including low leakage and an economical design. These benefits make the poppet valve an appealing alternative to spool valves in a valve stack. The fact that the metering element is not hydrostatically balanced as in a spool valve leads to control design challenges. In this work, a model of an electro hydraulic metering poppet valve is considered. Due to design compromises, the response of production metering poppet valves tends to be too slow to maintain a desired flow rate when there are fast upstream pressure variations. Re-designing to speed up the response of the valve may lead to stability issues which can be traced to plant uncertainty. Frequency response analysis of the valve model shows that the model varies greatly depending on the operating point chosen for the linearization. The analysis presented will help define the problem of designing hardware and control systems for higher performance but still reliable metering poppet valves.
Sponsorship	Fluid Power Systems and Technology Division
Starting Page	51
Ending Page	56
Page Count	6
File Format	PDF
ISBN	0791842207
DOI	10.1115/IMECE2005-80609
e-ISBN	0791837696
Volume Number	Fluid Power Systems and Technology
Conference Proceedings	ASME 2005 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2005-11-05
Publisher Place	Orlando, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Design Leakage Uncertainty Stability Valves Control systems Frequency response Hardware Flow (dynamics) Pressure
Content Type	Text
Resource Type	Article

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