Tampere University of Technology

TUTCRIS Research Portal

Digital hydraulic multi-pressure actuator – the concept, simulation study and first experimental results

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)141-152
Number of pages12
JournalInternational Journal of Fluid Power
Volume18
Issue number3
Early online date26 Mar 2017
DOIs
Publication statusPublished - 2017
Publication typeA1 Journal article-refereed

Abstract

The decentralisation of hydraulic systems is a recent trend in industrial hydraulics. Speed variable drive is one concept where an actuator is driven by an integrated pump, thus removing the need for control valves or complex centralised variable displacement hydraulic units and long pipelines. The motivation for the development is the need to improve the energy efficiency and flexibility of drives. A similar solution to mobile hydraulics is not currently available. This paper studies a digital hydraulic approach, which includes a local hydraulic energy storage located together with the actuator, the means to convert efficiently energy from the storage to mechanical work and a small start-/stop-type pump unit sized according to mean power. The simulation results and first experimental results show that the approach has remarkable energy saving potential compared to traditional valve controlled systems, but further research is needed to improve the controllability.

Keywords

  • Digital hydraulics, hybrid actuator, integrated actuator

Publication forum classification

Downloads statistics

No data available