http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
새로운 백 스테핑 제어기를 이용한 전기-유압 액추에이터의 위치제어
안경관(K. K. Ahn),돤녹치남(D. N. C. Nam),딩광졍(D. Q. Truong),윤종일(J. I. Yoon) 유공압건설기계학회 2012 유공압건설기계학회 학술대회논문집 Vol.2012 No.6
Nowadays, the Electro ? Hydraulic Actuator has shown great advantages over the conventional hydraulic actuators with valve control system. This paper presents a position control for an EHA using a modified back stepping controller. The controller is designed by combining the backstepping technique and the adaptation laws via special Lyapunov functions. The control signal consists of an adaptive control signal to compensate the nonlinearities and a simple robust structure to deal with a bounded disturbance. Experimental results are carried out to investigate the effectiveness of the proposed controller.
작업장치 위치에너지 회생을 위한 하이브리드 굴삭기 시스템 개발
윤종일(J. I. Yoon),안경관(K. K. Ahn),딩광졍(D. Q. Truong),강종민(J. M. Kang),김재홍(J. H. Kim) 유공압건설기계학회 2009 드라이브·컨트롤 Vol.6 No.4
Nowadays with the high fuel prices, the demands for energy saving and green emission of construction machinery have highly been increased without sacrifice of working performance, safety and reliability. The aim of this paper is to propose a new energy saving hybrid excavator system using an electro-hydraulic actuator driven by an electric motor/generator for the regeneration of potential energy. A 5 ton class excavator is analyzed, developed with the boom for the evaluation of the designed system. The hardware implementation is also presented in this paper. A control strategy for the hybrid excavator is proposed to operate the machine with a highest efficiency. The energy saving ability of the proposed excavator is clearly verified through simulation and experimental results in comparison with a conventional hydraulic excavator.
Center Position Control for Steel Machine Using Electro-Hydraulic Actuator
안경관(K. K. Ahn),윤종일(J. I. Yoon),딩광졍(D. Q. Truong),윤장원(J. W. Yoon) 유공압건설기계학회 2009 유공압건설기계학회 학술대회논문집 Vol.2009 No.11
This paper presents an application of electro-hydraulic actuator (EHA) to a steel rolling machine (SRM) in order to control the center position of the roller which affects directly to the working performance. The EHA control system is developed from a conventional servo hydraulic actuator (SHA) which is currently used to control the roller center of the SRM in POSCO Corp. Based on the EHA specifications and control requirements, the EHA circuit and its components are designed. In addition, the ability of using EHA for center position control (CPC) is verified by force control performance on an electro-hydraulic test machine (EHTM) in which the reference is the working data obtained from the SHA. Experimental result proves that the EHA has strong potential to be applied for CPC of the SRM.
하이브리드 액추에이터를 이용한 에너지 회생용 하이브리드 굴삭기에 관한 연구
안경관(K. K. Ahn),윤종일(J. I. Yoon),딩광졍(D. Q. Truong) 유공압건설기계학회 2010 유공압건설기계학회 학술대회논문집 Vol.2010 No.10
Nowdays, the demand for energy saving and green emission of construction machinery, especially hydraulic excavators, has been highly increased. As a result, hybrid system, which are promoted and successfully applied to automobile industry, is recently introduced to hydraulic excavators. The aim of this paper is to propose a new energy saving electro-hydraulic circuit design for the generation of potential energy of hybrid excavators. In this system, a power storage component, electrical battery, is combined with a hybrid electro-hydraulic actuator using an electric motro, and an electrical generator as energy convention component. In addition, a control strategy, which is used to control the hybrid excavator to follow commands given by a driver and to optimize the energy saving process of the generator and battery, is also proposed in this paper. The effectiveness of the energy saving hybrid excavator is clearly proven by a series of experiments on a effectiveness of the energy saving hybrid excavator is clearly proven by a series of experiments on a test rig including a bucket cylinder and analyses.