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험지주행이 가능한 4륜구동형 다목적 전동운반차에 관한 연구
이병호(Byungho Lee),최인덕(Indeok Choi) 한국자동차공학회 2014 한국자동차공학회 부문종합 학술대회 Vol.2014 No.5
Construction of the target items in this study , Hazardous run- type electric 4WD buggy as poor construction site , indoor workplaces, mountainous core of the construction site can be used in a wide range of amenities such equipment. Similar to the existing family, the use of a heavy-duty engine was the mainstream . To be small , but the use of heavy equipment is used, followed by many limitations . Complaints due to noise , during indoor operations could not be used due to the exhaust gas , as well as these devices themselves are not . Transport and carrying heavy objects is possible and can be towed at any time removable without tools and a charger base unit alone can perform various tasks, equipment. Thus, using only the meantime, staff personnel and transportation equipment , but is being used , which decrease work efficiency , has been the cause of many accidents . By using battery power source for industrial noise , smoke problems are not caused by , In addition, you want to research about the power control.
Passivity based Nonlinear controller for Position Tracking Control of Electro-Hydraulic Servo System
Wonhee Kim(김원희),Jongpyo Han(한종표),Indeok Choi(최인덕),Daehee Won(원대희),Chung Choo Chung(정정주) 제어로봇시스템학회 2008 제어로봇시스템학회 국내학술대회 논문집 Vol.2008 No.10
This paper presents a passivity controller for position control of electro-hydraulic servo system. Passivity based controller was designed to consider 5th order state space model of the hydraulic actuator which has a second order servo valve dynamics. Simulation results showed that position tracking performance of proposed controller is effective by bandwidth, step response, and path tracking test.