搜索结果: 1-11 共查到“农业工程 testing”相关记录11条 . 查询时间(0.093 秒)
Design, fabrication and testing of a cassava pelletizer
pellets machine throughput moisture speed
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2014/11/28
This paper reports on the design of fabrication and testing of a machine for cottage level production of pellets from
cassava mash. The pelletizer consists of a barreled screw auger which compresses...
环形土槽微耕机试验平台设计（Design of Micro-cultivator Testing Platform with Annular Soil Bin）
微耕机 土槽 试验平台 无线通讯
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2010/12/29
针对传统的微耕机田间试验受多种因素影响，而室内直线土槽无法进行可靠性试验，设计了可连续作业的环形土槽微耕机试验平台。采用闭合式环形土槽及轨道，实现试验平台长时间循环作业。各功能台车分开布置，台车上、下部的六轮行走机构及可转动的侧轮支轴，实现了台车在轨道上平稳运行及顺畅转弯。微耕机试验平台融合了上、下位机的自动控制技术、多传感器技术、无线通讯技术、园林灌溉技术等，实现了田间工况的重复模拟，既可进行性...
基于压痕加载曲线的谷物籽粒硬度性能测定技术（Testing of Grain Hardness Based on Indentation Loading Curve）
谷物 籽粒 硬度 压入法 试验
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2010/5/5
使用500N微机控制材料试验机，利用压痕加载曲线，进行了用针尖压入法测定谷物籽粒硬度的试验研究，测得豌豆、蚕豆、大米、绿豆、小麦、扁豆以及玉米在不同组成部位、不同含水率时的硬度值在2～75MPa范围内。研究表明，试验加载速度在0.25～2.00mm/s范围内、针尖压入深度在0.25～1.50mm范围内时对试验结果无明显影响，而针尖锥度与籽粒硬度存在定量关系。 By using the 500N m...
Testing the Residuals of an ARIMA Model on the Çekerek Stream Watershed in Turkey
ARIMA model Monthly streamflow Clekerek stream Diagnostic checks
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2009/10/10
In ARIMA modeling studies, the selection of a best model t to historical data is directly related to whether residual analysis is performed well. Therefore, diagnostic checks including the independen...
电液伺服油气悬架加载系统控制方法（Forced Control of Hydraulically Driven System for Hydro-pneumatic Suspension Testing）
油气悬架 驱动力控制系统 电液伺服系统
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2009/8/11
针对某重型车辆油气混合型悬架试验系统，建立了油气悬架负载的电液伺服驱动力控制系统的数学模型,并分析了负载刚度变化对系统幅值裕量与相位裕量的影响，得到控制参数与负载刚度之间的关系。为了能够提高系统的动态性能，引入根据刚度变化自动进行增益和转折频率调整的二阶校正环节。仿真和试验均表明所提方法对提高试验精度的有效性。
基于粗糙集与支持向量机的禽蛋蛋壳无损检测（Nondestructive Testing of Eggshell Based on Rough Sets and Support Vector Machine基于粗糙集与支持向量机的禽蛋蛋壳无损检测 Nondestructive Testing of Eggshell Based on Rough Sets and Support Vector Machine）
蛋壳 无损检测 支持向量机
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2009/5/22
针对当前禽蛋蛋壳无损检测系统存在检测精度不高的问题，提出粗糙集和支持向量机相结合的方法进行分类器的设计。首先，基于粗糙集理论对特征参数集进行属性约简，在约简过程中，利用模糊C均值聚类算法对特征参数进行量化，并基于属性重要性的启发式搜索对条件属性进行约简；然后，在属性约简的基础上完成支持向量机分类器的训练，在训练过程中，通过交叉验证法对分类器模型参数进行了优化。实验结果表明该方法的分类准确率能够达到...
Testing stands for laboratory tests of hydrostatic pumps of agricultural machinery
cyclic pressure loading durability test flow characteristics gear pump hydrostatic circuit
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2014/2/27
In this paper, a design of testing stands for the durability tests of hydrostatic pumps of agricultural tractors is presented. The designed testing stands will be used for the laboratory verification ...
Testing of quality of sowing by pneumatic sowing machines
Technological devices and equipment Sowing machines Working speed
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2010/2/8
Purpose: The purpose of the paper is to presents two sowing machines for interval sowing, differing in the mode of operation. We were interested in adequacy of sowing at different working speeds of th...
Testing of quality of sowing by pneumatic sowing machines
Technological devices and equipment Sowing machines Working speed
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2010/2/8
Purpose: The purpose of the paper is to presents two sowing machines for interval sowing, differing in the mode of operation. We were interested in adequacy of sowing at different working speeds of th...
Testing device with opened hydrostatic circuit for dynamic loading of the tractor engine by power take off shaft
power take off shaft measurement of speed characteristic hydraulic liquid hydrostatic generator electro-hydraulic proportional pressure valve
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2014/2/28
The developed loading device with opened hydrostatic circuit for measurement of speed and dynamic characteristics of the tractor engine by power take off is presented. This loading device may also be ...
Testing stand for life tests of hydrostatic pumps with a polluted fluid
hydrostatic transmission hydraulic oil PP 80 simulator of dynamic loading
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2014/2/28
Testing of the lifetime of hydrostatic transmissions can be done on special testing stands. Some testing stands use a pressure valve connected at the outlet of a pump. When using this design of stands...