Tampere University of Technology

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High flowrate digital hydraulic valve system

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

Details

Original languageEnglish
Title of host publicationThe Ninth Workshop on Digital Fluid Power
Publication statusPublished - 7 Sep 2017
Publication typeD3 Professional conference proceedings
EventWorkshop on Digital Fluid Power -
Duration: 1 Jan 1900 → …

Conference

ConferenceWorkshop on Digital Fluid Power
Period1/01/00 → …

Abstract

This paper presents the design and properties of a digital hydraulic valve system for flowrates up to 400 l/min. The digital hydraulic independent metering valve system (D-IMV) presented in this paper is capable of replacing both traditional proportional valves and servo valves in many mobile and industrial applications. Paper presents the design of the valve system, the measured dynamic and static properties of the on/off-valve and the valve system, and the requirements for the power electronics of the control system.
The digital hydraulic valve package presented in this paper has 4x7 bidirectional seat-type single-stage solenoid on/off-valves from Bucher Hydraulics for controlling four independent metering edges. Compared to the proportional or servo valves, the D-IMV has the benefits of digital systems in general. The leak-free on/off-valve is always exactly open or closed, the on/off-valve is robust for environmental changes such as oil contamination or temperature variations and a failure in a single on/off-valve in system does not completely paralyze the metering edge, but only reduces the control resolution.