Bernd Winkler, Andreas Plöckinger, Rudolf Scheidl,
"Refined Dynamic Measurements of a Piloted Fast Switching Multi Poppet Valve"
: Proceedings of the Third Workshop on Digital Fluid Power, DFP'10, October 13-14, 2010, Tampere, Finnland, Seite(n) 23-37, 10-2010, ISBN: 978-952-15-2434-9
Refined Dynamic Measurements of a Piloted Fast Switching Multi Poppet Valve
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Proceedings of the Third Workshop on Digital Fluid Power, DFP'10, October 13-14, 2010, Tampere, Finnland
This paper studies the dynamical response behaviour of a piloted, multi-poppet type
hydraulic switching valve. The valve has a rated flow of 100 l/min at 5 bar pressure loss
and can switch within one millisecond or even faster, depending on the actual pressure
situation. Possible application areas of this valve are primarily digital and witching
hydraulics. The valve which has been developed by the authors enables also low cost
manufacturing and an easy up- and downgrading of its two main performance
characteristics, the nominal flow rate and the switching time.
First measurements of the dynamic response presented in previous publications suffered
from some specific problem of the measurement setup. These problems are overcome
by a new measurement principle and setup. Both are presented in the paper as well as
several measurement results of the valve. These results show the fast response of the
valve. They also demonstrate the expressed dynamics of the hydraulic processes which
go on in such fast switching systems.
The measurement results are interpreted with respect to further improvements of the
valve performance. Different options of improvement are presented and discussed.