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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Drive and Control
Journal Basic Information
Journal DOI :
Korea Society of Fluid Power & Construction Equipments
Editor in Chief :
Volume & Issues
Volume 10, Issue 4 - Dec 2013
Volume 10, Issue 3 - Sep 2013
Volume 10, Issue 2 - Jun 2013
Volume 10, Issue 1 - Mar 2013
Selecting the target year
A Study on the Performance Improvement of an Air Spring System
Jang, J.S. ;
Journal of Drive and Control, volume 10, issue 2, 2013, Pages 1~6
DOI : 10.7839/ksfc.2013.10.2.001
This study describes a method which can attenuate reaction force effectively for an air spring system composed of an air spring and auxiliary chamber. For the analysis, the nonlinear governing equation of the air spring system is derived. For a performance improvement of the system, change of the heat transfer effect and the mass flow rates is included in the analysis of the air spring system. The simulation study is presented to show the reaction force is changed by variations in heat transfer characteristics and the air spring system of isothermal process has the best performance. As a result, to improve attenuation characteristics of reaction force, a process in the air spring system should be maintained near isothermal process.
A Study on Development of Industrial Engine Monitoring System Using Smart Phone Application
Jeong, C.S. ; Kim, Y.S. ; Jeong, Y.M. ; Kho, J.H. ; Jeong, K.S. ; Lee, H.S. ; Yang, S.Y. ;
Journal of Drive and Control, volume 10, issue 2, 2013, Pages 7~12
DOI : 10.7839/ksfc.2013.10.2.007
In this study, a wire/wireless communication system transmitting the operation data of engine from the ER (Engine Room) to the engine controller of ECR(Engine Control Room) has been developed through the communication of ISM(Industrial Science Medical) Band for the test operation environment improvement of medium speed engine. This wire/wireless communication system is composed of the RTU (Remote Terminal Unit) gathering and transmitting engine data as well as the MCU (Master Control Unit) receiving engine status information from the RTU to be sent to the engine controller (PLC). Through this study, a trial product of RTU and MCU has been manufactured. A test bench that has made temperature, pressure and pick-up sensor into a module for the local test of prototype was produced a test bench. In addition, at the same time save the data to a Web server and the smart phone real-time monitoring system has been developed using Wi-Fi communications. The ultimate objective of this study is to develop a wireless smart phone monitoring system of engine for the operator of engine to be able to monitor and control engine status even from the outside of engine room and control room based on this study.
An Analysis on Volumetric Displacement of Hydraulic Gerotor Pump/Motor using Energy and Torque Equilibrium - First Report: Case of Rotation of Inner and outer Rotors -
Kim, S.D. ; Kim, D.M. ; Ham, Y.B. ;
Journal of Drive and Control, volume 10, issue 2, 2013, Pages 13~22
DOI : 10.7839/ksfc.2013.10.2.013
It is difficult to analytically derive a volumetric displacement formula of gerotor hydraulic pump/motor because geometric shape of rotors is complicated. An analytical method about the volumetric displacement is proposed in this work, which is relatively easy and based upon two physical concepts. The first one is energy conservation between hydraulic energy of the pump/motor and mechanical input/output energy. The second concept is torque equilibrium with respect to inner and outer rotors. The formula about the volumetric displacement is derived for the common case of inner and outer rotors rotate with respect to fixed axes. The formula is verified by comparing another analytical displacement formula, and it is numerically verified by comparing numerical results, which is calculated for geometric specification of a motor. The numerical displacement is calculated through CAD software program and MATLAB program. The proposed analytical formula can be utilized in analysis and design of hydraulic gerotor motors.
A Study on Air-Conditioning System for Excavator using Forced Exhaust
Hwang, J.H. ; Jeong, C.S. ; Ko, J.H. ; Yang, S.Y. ;
Journal of Drive and Control, volume 10, issue 2, 2013, Pages 23~29
DOI : 10.7839/ksfc.2013.10.2.023
The excavator is used in a variety of construction environments. There are many kinds of risk like falling rocks or harmful dust. The excavator cabin protects the operator not only from these harmful environments but also provides a comfortable working environment. By the way, the excavator cabin consumes a lot of energy for cabin air conditioner. For this reason, the research is required to reduce energy consumption. This study suggests the air conditioning system for excavator using forced exhaust. First, the forced exhaust system simulated by AMESim tool and surveyed the applicability. Using AMESim simulation, it was investigated the effect of cabin inside temperature by intake flow rate and intake air temperature. The experiment executed using the 1.5 ton excavator and field tested according to the intake flow rate. Finally, verified the applicability on the air conditioning system for excavator using forced exhaust.
Gear Train Design of 8-Speed Automatic Transmission for Tractor
Jung, G.H. ;
Journal of Drive and Control, volume 10, issue 2, 2013, Pages 30~36
DOI : 10.7839/ksfc.2013.10.2.030
Tractor is a farm vehicle that is designed to provide a high tractive effort at low speed. It is used for versatile agricultural tasks such as hauling a trailer, tillage, mowing and construction work. Most older tractors use a manual transmission. However, as the intensity of work increases, tractors equipped with automatic transmission become popular due to the work convenience. In order to give the operator a large degree of control in field work, 24 gears with automatic 8-speed and manual 3-speed are arranged in transmission. This paper deals with the gear train that is designed for 8-speed automatic transmission by the engagement of multi-disk clutches. The gear ratio for each speed as well as power transmission mechanism is analyzed through velocity analysis. In addition, constraints of mesh gear ratio are derived by investigating the power flow path in velocity diagram for the given 8-speed gear ratio.