用于农业有效载荷自动运输的无人履带车功率特性研究

IF 2.4 3区 工程技术 Q3 ENGINEERING, ENVIRONMENTAL Journal of Terramechanics Pub Date : 2023-10-01 DOI:10.1016/j.jterra.2023.05.006
S.M. Shafaei , H. Mousazadeh
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引用次数: 3

摘要

阐述了一种用于温室建筑中农业有效载荷自主运输的无人履带车辆的功率特性,导致了本研究的应用研究的出现。这种新颖的目标是根据飞行器的作战要求而选择的。因此,可以强调的是,本文是对车辆动力效率(运动、滑移和牵引动力效率)的初步研究。为此,车辆以不同的行驶速度(0.17-0.5米/秒)牵引安装在拖车上的各种有效载荷(1-5千牛)。结果表明,车辆行驶速度和有效载荷对车辆的运动和牵引功率效率有重要影响。而车辆滑移功率效率主要取决于载荷重量。线性回归近似表明,驱动速度和载重对运动功率效率(84.98 ~ 97.69%)和牵引功率效率(78.62 ~ 92.92%)的双重累积贡献作用分别为拮抗作用和协同作用。滑移功率效率(81.71 ~ 98.36%)随载荷重量的增大呈线性下降。由此产生的滑移和运动功率效率低下与车辆运动功率损失的幅度分别为0.39 ~ 67.98 W和2.65 ~ 14.03 W。因此,牵引功率低效率与车辆运动功率损失的幅度为3.15-82.01 W。这一幅度表明,在农业拖曳任务中,3.35 ~ 43.62%的车辆运动功率不可避免地浪费在履带界面内。总体而言,对结果的数值和分析描述以及实际建议为车辆主管优化动力特性提供了适当的指导。
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On the power characteristics of an unmanned tracked vehicle for autonomous transportation of agricultural payloads

Elucidation of power characteristics of an unmanned tracked vehicle for autonomous transportation of agricultural payloads in greenhouse constructions leads to appearance of an applied research in this study. This novel aim has been chosen based on operational requirement of the vehicle. Hence, it can be highlighted that this paper is initiative study described results of power efficiencies (motion, slip, and tractive power efficiencies) of the vehicle. To this aim, various payloads mounted on a trailer (1–5 kN) were towed by the vehicle through diverse drive speeds (0.17–0.5 m/s). Results illuminate that vehicle drive speed and payload weight had consequential contribution to vehicle motion and tractive power efficiencies. While, vehicle slip power efficiency mainly depended on payload weight. Linear regression approximations demonstrate that dual cumulative contributory effect of the drive speed and payload weight on the motion power efficiency (84.98–97.69 %) and tractive power efficiency (78.62–92.92 %) was antagonist and synergetic, respectively. Meanwhile, the slip power efficiency (81.71–98.36 %) linearly dropped with augmentation of payload weight. Resultant slip and motion power inefficiency were associate with vehicle motion power loss in amplitude of 0.39–67.98 and 2.65–14.03 W, respectively. Consequently, tractive power inefficiency was associate with vehicle motion power loss in amplitude of 3.15–82.01 W. This amplitude spotlights that 3.35–43.62 % of vehicle motion power inevitably wasted inside track-surface interface in agricultural towing tasks. Overall, numerical and analytical descriptions of the results as well as practical suggestions provide appropriate guidelines for vehicle supervisor in order to optimize power characteristics.

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来源期刊
Journal of Terramechanics
Journal of Terramechanics 工程技术-工程:环境
CiteScore
5.90
自引率
8.30%
发文量
33
审稿时长
15.3 weeks
期刊介绍: The Journal of Terramechanics is primarily devoted to scientific articles concerned with research, design, and equipment utilization in the field of terramechanics. The Journal of Terramechanics is the leading international journal serving the multidisciplinary global off-road vehicle and soil working machinery industries, and related user community, governmental agencies and universities. The Journal of Terramechanics provides a forum for those involved in research, development, design, innovation, testing, application and utilization of off-road vehicles and soil working machinery, and their sub-systems and components. The Journal presents a cross-section of technical papers, reviews, comments and discussions, and serves as a medium for recording recent progress in the field.
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