345790

Improving performance of pump-controlled hydraulic circuits for single-rod actuators: conceptual study

Article

Last updated: 04 Jan 2025

Subjects

-

Tags

Hydraulics & Pneumatic Systems

Abstract

Pump-controlled hydraulic circuits are more efficient than conventional valve-controlled ones. Pump-controlled hydraulic circuits for double rod cylinders are well developed and, presently, implemented in many applications including aviation. Nevertheless, current pump-controlled hydraulic circuits for single-rod cylinders encounter performance issues during specific operating conditions. Pressure and actuator velocity oscillations are encountered when operating in this critical zone. Different concepts, techniques and designs are proposed by researchers to overcome such vibration issues. In this research, three different concepts to overcome the reported oscillation problem in these circuits are presented; namely: (1) shifting of critical zone into lower loading ranges, (2) applying selective leakage, and (3) applying selective throttling. Simulation studies indicated that the new concepts alleviated the oscillation issue of the common pump-controlled circuits, and improved their performances. The second and third concepts, in particular, were capable of eliminating the whole critical zone. The first concept reduced the area of the critical zone in the load-velocity plane and lessened undesirable effect of oscillations. Simulation studies further proved the enhanced performance of circuits that applies these concepts as compared to previously-designed circuits.

DOI

10.1088/1742-6596/2616/1/012015

Authors

First Name

A

Last Name

Imam

MiddleName

-

Affiliation

Egyptian Armed Forces, Egypt.

Email

ahmed73badie@gmail.com

City

-

Orcid

-

First Name

M

Last Name

Tolba

MiddleName

S

Affiliation

Department of Aerospace Engineering, Cairo University, Egypt.

Email

-

City

-

Orcid

-

First Name

N

Last Name

Sepehri

MiddleName

-

Affiliation

Department of Mechanical Engineering, University of Manitoba, Winnipeg, Canada.

Email

-

City

-

Orcid

-

Volume

20

Article Issue

20

Related Issue

46627

Issue Date

2023-05-01

Receive Date

2024-03-14

Publish Date

2023-05-01

Page Start

1

Page End

14

Print ISSN

2090-0678

Online ISSN

2636-364X

Link

https://asat.journals.ekb.eg/article_345790.html

Detail API

https://asat.journals.ekb.eg/service?article_code=345790

Order

345,790

Type

Original Article

Type Code

737

Publication Type

Journal

Publication Title

International Conference on Aerospace Sciences and Aviation Technology

Publication Link

https://asat.journals.ekb.eg/

MainTitle

Improving performance of pump-controlled hydraulic circuits for single-rod actuators: conceptual study

Details

Type

Article

Created At

24 Dec 2024