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Oscillations in a system of two coupled self‐regulating spool valves with switching properties

Schröders, Simon; Fidlin, Alexander

Abstract:
In hydraulic systems, valves can be considered as fundamental components. They serve as control elements to regulate hydraulic power transmission. In order to minimize control effort, self‐regulating spool valves enjoy great popularity. However, their disadvantage is a possible loss of stability, caused by the coupling between hydraulic and mechanical degrees of freedom via pressure feedback areas. So far, the self‐excited oscillations, evoked from the operating point's loss of stability, have mostly been investigated using minimal models of individual valves. In real world applications, for example in automotive transmissions, typically several valves are employed which are coupled by hydraulic pipes. Here, it is expected, that dynamical phenomena occur, which cannot be portrayed by simple models of individual valves. Within this contribution, the oscillatory behaviour of a system employing two coupled self‐regulating valves is discussed. The resulting non‐stationary solutions are characterized by using Floquet theory and computing Lyapunov‐Exponents.

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Verlagsausgabe §
DOI: 10.5445/IR/1000100369
Veröffentlicht am 26.02.2021
Originalveröffentlichung
DOI: 10.1002/pamm.201900340
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Mechanik (ITM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 11.2019
Sprache Englisch
Identifikator ISSN: 1617-7061, 1617-7061
KITopen-ID: 1000100369
Erschienen in Proceedings in applied mathematics and mechanics
Verlag Wiley-VCH Verlag
Band 19
Heft 1
Seiten Art.Nr. e201900340
Vorab online veröffentlicht am 18.11.2019
Nachgewiesen in Dimensions
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