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논문 기본 정보

자료유형
학술대회자료
저자정보
Dae Hyun Lee (Chungnam National University) Yong Joo Kim (Chungnam National University) Sun Ok Chung (Chungnam National University) Chang Hyun Choi (Sungkyunkwan University)
저널정보
유공압건설기계학회 유공압건설기계학회 학술대회논문집 유공압건설기계학회 2015年度 秋季 學術大會 論文集
발행연도
2015.10
수록면
16 - 23 (8page)

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Various field tests are needed to improve agricultural tractor performance, however, the field tests need cost for constructing an experiment system and time for conducting the tests repeatedly. In addition, it is hard to acquire reliable data because the field tests depend on environmental conditions. For this reason, the indoor tests using dynamometer have been used in the automotive industry instead of the field tests. For ensuring reliability of the indoor tests, standardized field cycles are needed as input data of a dynamometer. Therefore, this study aimed to develop a standardized plow tillage cycle using real field data of agricultural tractor. A load measurement system was installed on a tractor in order to collect the real field data from loads acting on four driving axles and hydraulic pumps. Plow tillage was conducted on total ten farmlands with similar sizes (3000 m² :100 m x 30m). The plow tillage cycle was developed using the driving cycle construction method of conventional vehicle with the measured load data. First, the entire data from ten farmlands classified into the micro trips which are minimum patterns of plow tillage including plowing, 3 point hitch ascending, and tractor turning. The arbitrary working cycles were generated by combining micro-trips, and selected less than 5% absolute percentage error between the entire data and generated arbitrary working cycle. Second, the plow tillage cycle was determined considering sum square difference (SSD) with torque-torque variation probability distribution. The selected working cycle having the lowest SSD was determined as the plow tillage cycle. Third, performance value (PV) of the plow tillage cycle of agricultural tractor and driving cycles of conventional vehicle were compared for performance evaluation of the plow tillage cycle. The results showed that the range of absolute percentage error comparing with the entire data had 2.4 ~ 4.5%. SSD and PVs of the plow tillage were 1195.96 and 99.65, respectively. One of the driving cycles of conventional vehicle, the ECE 15 driving cycle was the closest to the plow tillage cycle reaching 98% of PV. The results showed that the developed plow tillage cycle is feasible to apply to indoor tests for performance evaluation of agricultural tractor.

목차

Abstract
1. Introduction
2. Material and methods
3. Results and discusstion
4. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2017-550-000683681