Abstract

Hydraulic excavators have been popular devices in construction fields because of their multi-workings and economic efficiency. The mathematical models of excavators have many nonlinearities because of opening characteristics and dead zone of main control valve(MCV), oil temperature variation, etc. The objective of this paper is to develop a simulator for hydraulic excavator using AMESim. Components and their circuits are expressed graphically. Also, parameters and nonlinear characteristics are considered in a text style. From the simulation results, fixed spring stiffness of MCV can not obtain the satisfactory accuracy of spool displacement under whole P-Q diagrams. Closed loop type MCV containing a proportional gain, is proposed in this paper that can reduce displacement error. The ability of closed loop MCV is verified through comparing with normal type MCV using AMESim simulator. The excavator simulator can be used to forecast the attachment behaviors when components, mechanical attachments and hydraulic circuits change, or other control algorithms are applied. The simulator could be a kind of development platform for new excavators.

주제어

#유압 굴삭기   #시뮬레이터   #아메심   #주제어밸브  

저자의 다른 논문

참고문헌 (12)

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이 논문을 인용한 문헌 (3)

1. Han, Moon-Sik ; Cho, Jae-Ung 2011. "Structural Analysis of Excavator Arm and its Connection Pins" 한국생산제조시스템학회지 = Journal of the Korean Society of Manufacturing Technology Engineers, 20(1): 7~12  원문보기 상세보기
2. Kang, Min-Jae ; Cho, Jae-Ung 2014. "A Study on Structural Durability due to the Configuration of Ripper at Excavator" 한국융합학회논문지 = Journal of the Korea Convergence Society, 5(2): 13~18  원문보기 상세보기
3. Cho, Jae-Ung 2014. "A Study on Structural Safety and Fatigue Failure of End Mill" 한국융합학회논문지 = Journal of the Korea Convergence Society, 5(3): 17~22  원문보기 상세보기