Implementation and Test of Hydraulic Control System for the Tractor Leveling

트랙터의 수평제어를 위한 유압 시스템의 특성 실험

  • 이상식 (LG 전선(주) 기계연구소 트랙터그룹) ;
  • 오기석 (성균관대학교 생물기전공학과) ;
  • 황헌 (LG 전선(주) 기계연구소 트랙터그룹)
  • Published : 1999.10.01

Abstract

When a tractor travels slope lands, problems of operator safety and the reduction of job efficiency usually occur. Therefore, maintaining the tractor body being horizontal is critical to improve the security of traveling and the job performance. An experiment was made in a soil bin using the experimental model system built and equipped with a leveling control system. Adaptability of the control system was tested and investigated by analyzing system response in time and frequency domains. Control response time of hydraulic cylinder with 10lpm flow rate on a step input of 10$^{\circ}$slope was about 0.42sec. And it showed a linearly increasing trend without any hunching state. A steady state error of 0.6$^{\circ}$occurred but it was negligible. The hydraulic control system showed a little phase differences within the range of 0.4Hz input frequency. The experimental model showed that implementation of the proposed tractor control system to on slope lands tractor was feasible.

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