Automatic control of the combine, 1. Automatic guidance control of the head-feed combine
1988
Chung, C.J. | Kim, S.O. (Seoul National Univ., Suwon (Korea R.). Coll. of Agriculture) | Kim, S.S.
This study was intended to develop the system automatically controlling travel direction of combine by means of sensing paddy rows. The control system was composed of three detecting levers having different length, microswitch, microcomputer and electro-hydraulic control system. Sensor and control system developed was tested to estimate optimum design values and its actual performance as installed in combine. The computer and performance test at simulated and actual field were conducted to test for possibility of practical use. The travel traces of combine having the conventional sensor with 2 levers and the new sensor detecting the slope of paddy rows were compared through computer simulation. Turning frequency of combine having new sensor was fewer than that of conventional sensor, but the rate of turning for the combine with new sensor was much greater than that of conventional sensor. Field test of combine installed with the sensor and electro-hydraulic system developed in this study showed that it may be operated smoothly and well behaved to paddy rows to 4th gear of combine speed which was 59cm/s. Consequently, it was concluded that the combine with the guidance control system developed in this study may be successfully used for paddy combining
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