Andrzej Kosucki (Author), Łukasz Stawiński (Author), Adrian Morawiec (Author), Jarosław Goszczak (Author)

Abstract

Hydraulic systems fed by fixed displacement pumps driven by frequency-controlled electric motors can replace conventional throttling systems due to their ability to control the speed of hydraulic cylinders regardless of the value and direction of the load. These systems can improve the energy efficiency of the drive or even provide the possibility of energy recuperation during lowering. This paper presents experimental studies of the new drive system with volumetric control of the speed of the lifted/lowered payload using the example of a scissor lift. The system uses a reversible gear pump driven by an asynchronous motor fed by a frequency inverter operating in field-oriented control mode. Comparative studies of the mapping of the assumed speed of the hydraulic cylinder and platform are presented, as well as studies of the influence of the load change on the speed and positioning of the mechanism driven by the open-loop controlled system.

Keywords

hydraulic drives;speed controlled pumps;variable-ratio device;lifting systems;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 621.22
COBISS: 88437507 Link will open in a new window
ISSN: 0039-2480
Views: 158
Downloads: 54
Average score: 0 (0 votes)
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Other data

Secondary language: Slovenian
Secondary title: Elektrohidravlični pogon aktivno obremenjene dvigalne naprave z variabilnim razmerjem
Secondary keywords: hidravlični pogoni;črpalka z nastavljivo hitrostjo;naprava z variabilnim razmerjem;dvigalni sistem;
Type (COBISS): Article
Pages: str. 599-610
Volume: ǂVol. ǂ67
Issue: ǂno. ǂ11
Chronology: Nov. 2021
DOI: 10.5545/sv-jme.2021.7320
ID: 14075137
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