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.
| Original language | English |
|---|---|
| Pages (from-to) | 141-152 |
| Number of pages | 12 |
| Journal | International Journal of Fluid Power |
| Volume | 18 |
| Issue number | 3 |
| Early online date | 26 Mar 2017 |
| DOIs | |
| Publication status | Published - 2017 |
| Publication type | A1 Journal article-refereed |
Keywords
- Digital hydraulics
- hybrid actuator
- integrated actuator
Publication forum classification
- Publication forum level 1
ASJC Scopus subject areas
- Mechanical Engineering
- General Physics and Astronomy
Access to Document
- Digital hydraulic multi-pressure actuator – the concept, simulation study and first experimental results
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