基于DEM-MBD合模拟的山地摆动杆凸轮型孔播种器的关键组件的优化设计和实验
Lijun Zhao1, Wenke Yin1, Bin Yang2
1Intelligent Manufacturing Engineering College of Chongqing Wenli University, Chongqing, China.
PloS one
|March 14, 2025
概括
优化杆凸轮轴孔播种器使用可调角度和滚筒组显著提高玉米和大豆播种质量在具有挑战性的地形. 这种方法减少了错误播种和再播种率,以提高农业效率.
科学领域:
- 农业工程 农业工程
- 精准农业 精准农业 精准农业
- 机械学 机械学 机械学
背景情况:
- 摆动杆凸轮轴孔播种机在丘陵地区面临挑战,包括在玉米和大豆复合种植期间大量错过播种和不均的分布.
- 现有的播种机制需要针对不同的地形和作物类型进行优化.
研究的目的:
- 提出并验证一种方法,通过调整可移动的杆杆角度和杆滚筒组号来优化杆杆凸轮轴孔种子.
- 提高播种质量,特别是减少复合种植场景中错误播种和再播种率.
主要方法:
- 分析形成孔的装置的运动和机制,以了解参数的影响.
- DEM-MBD 合模拟实验具有不同的轴速,摆动杆角度和凸轮滚筒组号码.
- 坐标旋转组合实验和设计专家13软件用于多目标优化和数学建模.
主要成果:
- 确定了最佳参数组合:轴速度为47.43-48.09r/min,摆形杆角度为100.23°-101.70°,以及2.81-2.95的凸轮滚筒.
- 取得了95.19% (玉米) 和96.07% (大豆) 的合格播种率,再播种率低 (2.35%-3.58%) 和错过播种率低 (1.23%-1.58%).
- 与现场测试相比,模拟结果显示出高准确度,相对误差低于1.57%,验证了合模拟模型.
结论:
- 拟议的优化方法有效地提高了摆动杆凸轮轴孔播种器的播种性能.
- 经过验证的DEM-MBD合模拟模型为设计和优化农业机械提供了可靠的工具.
- 这些发现为提高山丘和山区种植者的理论支持,促进高效的复合种植.
更多相关视频
08:59Modeling and Experimental Analysis of the Single-Shaft Coaxial Motor-Pump Assembly in Electrohydrostatic Actuators
Published on: June 13, 2022
2.5K
06:45Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
Published on: October 28, 2022
1.5K
相关概念视频
Transmission Shafts: Problem Solving
205
Designing a solid shaft that transmits power from a motor to a machine tool involves a series of calculations to ensure the shaft can withstand the stresses applied by bending moments and torques. First, calculate the torque exerted on the gear, considering the power transmitted by the shaft and its rotational speed. Following this, compute the tangential forces acting on the gears, which directly relate to the torque and the gear radius.
Next, use bending moment diagrams for the shaft to...
Next, use bending moment diagrams for the shaft to...
205
Bearings: Problem Solving
259
Understanding the calculations and concepts related to double-collar bearings is essential for engineers and designers to optimize the performance of these components in various applications. By analyzing the bearing under different conditions, one can ensure that it can withstand the forces and moments experienced during operation. This knowledge enables better decision-making when designing and selecting bearings for specific purposes and configurations. Consider a double-collar bearing with...
259
Design of Transmission Shafts - Stress Analysis
300
Designing a transmission shaft requires a thorough understanding of the stresses induced by bending moments and torques, especially in systems where power is transferred through gears. These forces create force-couple systems at the centers of the shaft's cross-sections, leading to both transverse and torsional loading. Although shearing stresses from transverse loads are typically smaller than those from torques and are often overlooked, the significant normal stresses from these loads...
300
One-Degree-of-Freedom System
446
In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
446
Self-Locking Screw
1.4K
A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
1.4K
Equivalent Couples
260
In mechanical engineering, the concept of equivalent couples plays a crucial role in understanding and analyzing various mechanical systems.
Two couples are considered to be equivalent if they produce the same rotational effect on a rigid body. In other words, the two couples have the same magnitude and act in the same direction, causing the same angular displacement or acceleration in the body.
For instance, consider two couples lying in the plane of the page, with one having a pair of equal...
Two couples are considered to be equivalent if they produce the same rotational effect on a rigid body. In other words, the two couples have the same magnitude and act in the same direction, causing the same angular displacement or acceleration in the body.
For instance, consider two couples lying in the plane of the page, with one having a pair of equal...
260
