Mixed time–frequency domain simulation of a hydraulic inductance pipe with a check valve

Autor:	Rudolf Scheidl, Bernhard Manhartsgruber, H Kogler
Rok vydání:	2011
Předmět:	business.product_category Check valve Computer science Buck converter Mechanical Engineering Computation Function (mathematics) Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Computer Science::Other Inductance Algebraic equation Control theory Variational inequality business Smoothing
Zdroj:	Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 225:2413-2421
ISSN:	2041-2983 0954-4062
DOI:	10.1177/0954406211412459
Popis:	This paper deals with the efficient computation of hydraulic switching systems with a check valve by a mixed time–frequency domain method; frequency-domain modelling is performed on the wave propagation in a pipe and time-domain modelling is applied to the switching valve and the check valve. The dual property of the check valve makes the complete problem have variational inequality properties. A solution method is presented which replaces the pressure and the flowrate of the check valve as a function of one new variable. The resulting system of non-linear algebraic equations is solved using a Newton–Raphson method in combination with a smoothing of the non-smooth properties of the check valve. The method is applied to a parameter study of a hydraulic buck converter.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c114d9b3acdaa455873123c32ed1de2b https://doi.org/10.1177/0954406211412459 Zobrazit plný text záznamu