Investigation of New Servo Drive Concept Utilizing Two Fixed Displacement Units

Henrik Clemmensen Pedersen; Lasse Schmidt; Torben O. Andersen; Morten H.  Brask

doi:10.5739/jfpsij.8.1

Investigation of New Servo Drive Concept Utilizing Two Fixed Displacement Units

Henrik Clemmensen Pedersen, Lasse Schmidt, Torben O. Andersen, Morten H. Brask

AAU Energy

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Traditional valve controlled hydraulic drives have an inherent power loss, due to the throttling over the valves, which limits the maximum system efficiency. Pump controlled direct drives do not have this inherent limitation, but are limited when it comes to controlling asymmetric cylinders, why most solutions that have tried to overcome this problem have incorporated some kind of accumulator. In the present paper a new concept is presented, modelled and analyzed, and it is shown that the concept overcomes the problem with asymmetric cylinders, without the use of an accumulator. The paper first presents an analysis of the general concept, showing that both cavitation and excessive pressure build up needs to be handled by the system, after which the system is presented and modelled. Finally both simulation and experimental results are presented showing the validity of the concept.

Original language	English
Journal	JFPS International Journal of Fluid Power System
Volume	8
Issue number	1
Pages (from-to)	1-9
Number of pages	9
DOIs	https://doi.org/10.5739/jfpsij.8.1
Publication status	Published - Sept 2015

Bibliographical note

This paper is a selected paper from the 9th JFPS International Symposium on Fluid Power, Matsue, Japan in October 28-31, 2014

Keywords

Servo drive
Analysis
Efficiency
Simulation
Experimental Results

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10.5739/jfpsij.8.1

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Cite this

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title = "Investigation of New Servo Drive Concept Utilizing Two Fixed Displacement Units",

abstract = "Traditional valve controlled hydraulic drives have an inherent power loss, due to the throttling over the valves, which limits the maximum system efficiency. Pump controlled direct drives do not have this inherent limitation, but are limited when it comes to controlling asymmetric cylinders, why most solutions that have tried to overcome this problem have incorporated some kind of accumulator. In the present paper a new concept is presented, modelled and analyzed, and it is shown that the concept overcomes the problem with asymmetric cylinders, without the use of an accumulator. The paper first presents an analysis of the general concept, showing that both cavitation and excessive pressure build up needs to be handled by the system, after which the system is presented and modelled. Finally both simulation and experimental results are presented showing the validity of the concept.",

keywords = "Servo drive, Analysis, Efficiency, Simulation, Experimental Results",

author = "Pedersen, {Henrik Clemmensen} and Lasse Schmidt and Andersen, {Torben O.} and Brask, {Morten H.}",

note = "This paper is a selected paper from the 9th JFPS International Symposium on Fluid Power, Matsue, Japan in October 28-31, 2014",

year = "2015",

month = sep,

doi = "10.5739/jfpsij.8.1",

language = "English",

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pages = "1--9",

journal = "JFPS International Journal of Fluid Power System",

number = "1",

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TY - JOUR

T1 - Investigation of New Servo Drive Concept Utilizing Two Fixed Displacement Units

AU - Pedersen, Henrik Clemmensen

AU - Schmidt, Lasse

AU - Andersen, Torben O.

AU - Brask, Morten H.

N1 - This paper is a selected paper from the 9th JFPS International Symposium on Fluid Power, Matsue, Japan in October 28-31, 2014

PY - 2015/9

Y1 - 2015/9

N2 - Traditional valve controlled hydraulic drives have an inherent power loss, due to the throttling over the valves, which limits the maximum system efficiency. Pump controlled direct drives do not have this inherent limitation, but are limited when it comes to controlling asymmetric cylinders, why most solutions that have tried to overcome this problem have incorporated some kind of accumulator. In the present paper a new concept is presented, modelled and analyzed, and it is shown that the concept overcomes the problem with asymmetric cylinders, without the use of an accumulator. The paper first presents an analysis of the general concept, showing that both cavitation and excessive pressure build up needs to be handled by the system, after which the system is presented and modelled. Finally both simulation and experimental results are presented showing the validity of the concept.

AB - Traditional valve controlled hydraulic drives have an inherent power loss, due to the throttling over the valves, which limits the maximum system efficiency. Pump controlled direct drives do not have this inherent limitation, but are limited when it comes to controlling asymmetric cylinders, why most solutions that have tried to overcome this problem have incorporated some kind of accumulator. In the present paper a new concept is presented, modelled and analyzed, and it is shown that the concept overcomes the problem with asymmetric cylinders, without the use of an accumulator. The paper first presents an analysis of the general concept, showing that both cavitation and excessive pressure build up needs to be handled by the system, after which the system is presented and modelled. Finally both simulation and experimental results are presented showing the validity of the concept.

KW - Servo drive

KW - Analysis

KW - Efficiency

KW - Simulation

KW - Experimental Results

U2 - 10.5739/jfpsij.8.1

DO - 10.5739/jfpsij.8.1

M3 - Journal article

VL - 8

SP - 1

EP - 9

JO - JFPS International Journal of Fluid Power System

JF - JFPS International Journal of Fluid Power System

IS - 1

ER -

Investigation of New Servo Drive Concept Utilizing Two Fixed Displacement Units

Abstract

Bibliographical note

Keywords

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