SAS의 반응표면 회귀법(RSREG)을 이용한트랙터 장착 복합 작업기의 최적 운용조건 구명
Optimal Operating Condition for a Tractor-mounted Integrated Implement Using SAS-RSREG
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단계별 작업기를 통합하여 일관화하는 복합기를 실용화하여 생산효율이 개선되어 밭농업 생력화에 기여하였다. 본 연구의 목적은 SAS를 이용한복합작업기의 최적 작업조건을 반응표면기법(RSM)으로 구명하고 최적 성능을 실험으로 평가하여 집약적 밭농업의 트랙터 운용방법을 제시하고자하였다. 로터리 작업에서 회전속도와 전진속도의 관계는 견인력의 효율성과 멀칭 등 작업품질에 적정한 트랙터의 운용기준 조건을 나타낸다. 슬립과공차를 고려하면 통합 선택기준 작업속도는 3.4<SPDcr<4.7 km/h 범위로 확장되고, 로터리 피치(p)가 40<p<56 cm/rev로 판단되었다. 여러 검토조건에서 연료소비량을 예측하고 동력의 효율성을 평가하는데 Kim 모델이 사용되었다. 목적함수를 만족하는 적정 p의 범위에 속하는 공칭 작업속도(SPD)를엔진속도비(n)와 주행 기어비(GR)로 나타내어 최적 설계점은 카테고리 1급(DK450) 트랙터에 대하여 독립변수 n, GR/변속단수는 0.65, 401/M4로구명되었다. 실험 평가에서 작은 트랙터는 시뮬레이션과 비교적 일치하였고, 큰 트랙터의 실험은 낮은 연료소비량과 실작업속도로 오차를 유발하였다.
Abstract
A tractor-mounted integrated implement contributed to labor-savings of upland agriculture by improving production efficiency vialaunching into practical use of an integrated implement that synchronizing step-wise machines. The objective of this study was to proposea tractor operation strategy for intensive upland farming by finding the optimal operating conditions of the integrated implement usingthe response surface methodology (RSM) of SAS and verification. The relationship between rotational speed and forward speed in rotarybased work indicates the standard operating conditions of tractor for the traction efficiency and work quality such as mulching. Consideringthe slip and tolerance, the selection criteria working speed (SPDcr) was expanded to the range of 3.4<SPDcr<4.7 km/h, and the rotarypitch (p) was determined to be 40<p<56 cm/rev. Kim model was used to predict fuel consumption and evaluate power efficiency undervarious conditions. The nominal working speed (SPD) by expressing the independent variables of engine speed ratio (n) and transmissiongear ratio (GR) within the range of proper p, satisfying the objective function, the optimal design point for category I (DK450) tractorwas 0.65, and 401 (shift gear M4). In the verification, experiment result for DK450 agreed the simulation; however, for PX800 showedin some errors due to low fuel consumption and actual working speed in the experiment.
참고문헌 (35)
- ASABE, "Standard D497.7 MAR2011 (Rev. 2015)", Agricultural machinery management data, ~ (2011)
- Chung CJ, "Agricultural machinery" (2015), Hyangmoon Pub. Co
- Grisso R., "“Gear up and throttle down” to save fuel. Publication 442-450(BSE-326P)", Virginia Cooperative Extension, Virginia Tech, ~ (2020)
- Gupta CP, "Power requirement of a rotary tiller in saturated soil", Trans. of the ASAE, 36(4), pp.1009~1012 (1993)[DOI]
- B. A. Haider, "Aerodynamic performance optimization for the rotor design of a hovering agricultural unmanned helicopter", Journal of Mechanical Science and Technology, 31(9), pp.4221~4226 (2017), 대한기계학회
- Hann MJ, "Force measurements on driven discs", J. of Agriculture Engineering Research, 69, pp.149~157 (1998)
- Hendrick JG, "Rotary tiller design parameters part I : direction of rotation", Transactions of the ASAE, 14(4), pp.669~674 (1971)[DOI]
- Hendrick JG, "Rotary tiller design parameters part III : Ratio of peripheral and forward velocities", Transactions of the ASAE, 14(4), pp.679~683 (1971)[DOI]
- Hendrick JG, "A powered rotary chisel", Transactions of the ASAE, 23(6), pp.1349~1352 (1980)[DOI]
- Hicks CR, "Fundamental concepts in the design of experiments" (1999), Oxford University Press
- 주상현, "로컬푸드 성공요인 분석과 정책적 함의", 지방정부연구, 19(3), pp.291~315 (2015), 한국지방정부학회
- Kim BG, "A Survey on the using state of agricultural machinery and mechanized rate", Proc. of KSAM & KSBEC 2013 Spring Conf, pp.137~138 (2013)
- Kim SC, "Modelling of fuel consumption rate for agricultural tractors", J. of Biosys. Eng, 35(1), pp.1~9 (2010)
- "KOAT" (2014)[URL]
- 구영모, "Characteristics of Power and Fuel Use of a Tractor-Mounted Integrated Implement for Round Ridge Preparation", Journal of Biosystems Engineering, 46(4), pp.496~507 (2021), 한국농업기계학회[DOI]
- 구영모, "트랙터 장착형 일관작업 평두둑 복합기의 포장능률 및 비용 분석", 농업생명과학연구, 52(5), pp.137~149 (2018), 농업생명과학연구원[DOI]
- 구영모, "트랙터 장착형 일관작업 둥근두둑 복합기의 슬립특성 분석", 농업생명과학연구, 54(5), pp.127~136 (2020), 농업생명과학연구원[DOI]
- 구영모, "SAS를 이용한 농용 무인회전익기 변이익형 로터블레이드의 최적 설계", 대한기계학회논문집 B, 44(1), pp.13~23 (2020), 대한기계학회
- 구영모, "트랙터 장착형 일관작업 둥근두둑 복합기의 포장능률 및 비용분석", 농업생명과학연구, 55(5), pp.115~124 (2021), 농업생명과학연구원[DOI]
- 구영모, "PTO Torque and Draft Analyses of an Integrated Tractor-Mounted Implement for Round Ridge Preparation", Journal of Biosystems Engineering, 47(3), pp.330~343 (2022), 한국농업기계학회[DOI]
- 구영모, "트랙터 장착형 일관작업 둥근두둑 복합작업기의 적정 운용조건 선택", 농업생명과학연구, 56(5), pp.109~120 (2022), 농업생명과학연구원
- Lee JW, "Computer simulations to maximise fuel efficiency and work performance of agricultural tractors in rotavating and ploughing operation", Biosys. Eng, 142, pp.1~11 (2016)
- Lee JW, "Development of integrated adjustment system for maximizing fuel efficiency of agricultural tractors", Ph.D., pp.2015
- Lee SK, "A plan for expansion of provision of school meal through developing joint brand between local food and good local enterprises in Daegu", Mater, Major in Rural Department, pp.2014
- Myers RH, "Response Surface Methodology-process and production optimization using designed experiment", pp.362~364 (2009), John Wiley & Sons, Inc
- Nataraj E, "Embedded digital display and warning system of velocity ratio and wheel slip for tractor operated active tillage implements", Journal of Terramechanics, 97, pp.35~43 (2021)[DOI]
- Rheem S, "Using REG and RSREG procedures of the SAS System to analyze a response surface with a subset second-order polynomial regression model", Applied Statistics, 11(12), pp.39~49 (1996)
- 심성보, "트랙터 장착형 일관작업 평두둑 복합기의 개념설계 및 후방전도 안정성 분석", 농업생명과학연구, 52(3), pp.111~122 (2018), 농업생명과학연구원[DOI]
- Shinners KJ, "Performance characteristics of a tillage machine with active-passive components", J. of Agricultural Engineering Research, 55(4), pp.277~297 (1993)[DOI]
- Sun H, "Response surface approach to aerodynamic optimization design of helicopter rotor blade", International J. of Numerical Methods in Engineering, 64(1), pp.125~142 (2005)
- Upadhyay G, "Performance of combined offset disc harrow (front active and rear passive set configuration)in soil bin", J. of Terramechanics, 78, pp.27~37 (2018)[DOI]
- Upadhyay G, "Effect of velocity ratio on performance characteristics of an active-passive combination tillage implement", Biosystems Engineering, 191, pp.1~12 (2020)[DOI]
- Yeom JG, "Linear regression analysis using SAS and R", pp.221~378 (2017), Free Academy Pub
- Yu SC, "A Survey on the using state of major rice agricultural machinery", Proc. KSAM 2014 Autumn Conf, 19(2), pp.91~92 (2014)
- Zoz FM, "Traction and tractor performance", Agricultural Equipment Technology Conference (2003)