Automatic Control of the Combine(III) -Automatic Feeding Depth Control of the Head-feed Combine-

콤바인의 자동제어(自動制御)에 관한 연구(硏究)(III) -자탈형(自脱型) 콤바인의 탈곡(脱穀)깊이 자동제어(自動制御)-

This study was intended to develop the automatic feeding depth control system of the head-feed combine which could feed the rice head into threshing unit at the optimal depth regardless of plant height and uneven ground surface. In the control system, one-board microcomputer was used for the controller instead of conventional electric circuits. Field test of the combine equipped with the control system was conducted to evaluate its overall performance. It was also investigated how the location and time delay of rice head sensor affect the system performance.