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The Hydraulically Controlled Oscillating Piston Converter

Institute of Machine Design and Hydraulic Drives, Johannes Kepler University Linz, Altenbergerstraße 69, 4040 Linz, Austria
Academic Editor: Bizon Nicu
Energies 2021, 14(8), 2156;
Received: 17 March 2021 / Revised: 8 April 2021 / Accepted: 9 April 2021 / Published: 13 April 2021
(This article belongs to the Special Issue Intelligent Fluid Power Drive Technology)
One way to realize inertia in energy saving hydraulic switching converters is a mechanical oscillator connected to a piston. Its two basic advantages over the use of fluid in an inductance pipe are higher compactness and a better decoupling of inductance and capacitance; these are opposed by a more complex valve system, which raises costs if electric control is applied. This paper presents and studies an oscillating mass converter with pure hydraulic control. It features a pressure control function and constitutes a step-up converter. A simple model is established to elucidate the basic properties of the function principle under idealized conditions. The complete system with the hydraulic control concept is studied by an elaborate dynamical model. It is shown that the converter is able to operate in the intended way under the conditions of the mathematical model. A potential application for a load sensing type meter out control of a cylinder drive is sketched. View Full-Text
Keywords: switched inertance control; oscillating mass converter; digital hydraulics switched inertance control; oscillating mass converter; digital hydraulics
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MDPI and ACS Style

Scheidl, R. The Hydraulically Controlled Oscillating Piston Converter. Energies 2021, 14, 2156.

AMA Style

Scheidl R. The Hydraulically Controlled Oscillating Piston Converter. Energies. 2021; 14(8):2156.

Chicago/Turabian Style

Scheidl, Rudolf. 2021. "The Hydraulically Controlled Oscillating Piston Converter" Energies 14, no. 8: 2156.

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