지게차 자동변속기의 클러치 직접 제어 유압 시스템 모델링 및 해석

The Hydraulic System Modeling and Analysis of the Clutch Direct Control of an Automatic Transmission for a Forklift Truck

  • 오주영 (한양대학교 기계설계.메카트로닉스공학과) ;
  • 이근호 (한국기계연구원 시스템엔지니어링연구본부) ;
  • 송창섭 (한양대학교 기계공학부)
  • Oh, Joo-Young (Department of Mechanical design & Mechatronics Engineering, Hanyang Univ.) ;
  • Lee, Guen-Ho (System Engineering Research Division, KIMM) ;
  • Song, Chang-Sub (Department of Mechanical Engineering, Hanyang Univ.)
  • 발행 : 2009.01.01

초록

An automatic transmission of construction equipment is controlled by hydraulic and electronic system for doing in various functions like as shifting and operation. The shifting is operated by the engaged and disengaged clutch motion from hydraulic power. On the shifting process, suitable pressure control to the clutch is required for smooth shifting. Hydraulic control system in the automatic transmission is divided by the pilot control type and the direct control type greatly. The direct control type has an advantage than the pilot control type. Because the structure is simple, the design and the manufacture are having less troubles and the system can be maximized precision pressure control. However, the excellent performance proportional control valve should be used to achieve proper control-ability. In this study, the dynamic analysis model composing the automatic transmission and hydraulic system for forklift truck is presented to simulate the characteristics of hydraulic system about the direct control type. That model is verified the validity compared the results of the testing examination. Parameters of input signal are analyzed to reduce the output torque according to input control signal is affected in shifting characteristic.

키워드

참고문헌

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