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当前位置: 首页 > 文章 > 大功率拖拉机电液提升专用力传感器磁路设计与仿真 农业机械学报 2017 (8) 358-367
Position: Home > Articles > Magnetic Circuit Design and Simulation of Draft Sensor in Electro-hydraulic Lifting Mechanism of High-power Tractor Transactions of the Chinese Society for Agricultural Machinery 2017 (8) 358-367

大功率拖拉机电液提升专用力传感器磁路设计与仿真

作  者：
李瑞川;郭坤;杨俊茹;徐继康;赤玉荣
单  位：
山东五征集团;山东科技大学机械电子工程学院;山东海卓电液控制工程技术研究院;山东科技大学交通学院
关键词：
力传感器;大马力拖拉机;压磁效应;磁路设计;电液提升控制
摘  要：
基于压磁效应原理,对大马力拖拉机电液提升控制专用力传感器的磁路结构进行了研究。分析了该力传感器的工况和现有柱状磁芯型力传感器的磁路工作原理,并针对其不足提出了一种十字芯型的力传感器磁路结构方案,将现有柱状磁芯型力传感器产品的受力维度从二维变为三维,在同等受力变形的基础上增大了磁路结构的变形程度,增加了磁场的偏置程度,提高了传感器的灵敏度与线性度。建立了磁结构的三维模型与磁路数学模型,并基于Matlab/Simulink模块分别建立了柱状磁芯型与十字芯型2种力传感器的系统仿真模型。结果表明,与柱状磁芯型力传感器相比,十字芯型力传感器线性度由1.85%降低为0.08%,灵敏度由0.09 mV/kN提高为0.21 mV/kN,适用于重载荷作用下电液提升系统中力的测量与控制,能够更好地适应恶劣的工作环境,提升拖拉机的耕作效果。
译  名：
Magnetic Circuit Design and Simulation of Draft Sensor in Electro-hydraulic Lifting Mechanism of High-power Tractor
作  者：
LI Ruichuan;GUO Kun;YANG Junru;XU Jikang;CHI Yurong;College of Mechanical and Electronic Engineering,Shandong University of Science and Technology;Shandong Wuzheng Group;College of Transportation,Shandong University of Science and Technology;Shandong Haizhuo Research Institute of Electro-hydraulic Control Engineering Technology;
关键词：
force sensor;;high-power tractor;;magnetoelastic effect;;magnetic circuit design;;electro-hydraulic lifting control
摘  要：
Based on magnetoelastic effect,the magnetic circuit of the draft sensor,which was used in electro-hydraulic lifting mechanism of high-power tractor,was learned and designed. According to the analysis of the working condition and the structure of the same type product abroad which used a columnar excitating magnetic core to create the working magnetic field,a new kind of magnetic structure was designed,which changed the excitating magnetic core from columnar to cruciform,so that changed the mechanical dimensions from 2D to 3D. For the design,bear force from horizontal and vertical directions in the same time,which resulted in the shear deformation in both directions,it also made greater change of the magnetic field,and it is more comfortable under actual working conditions. The 3D model was built to show the structure of the draft sensor with cruciform excitating magnetic core, and the mathematical model was built,which could describe the operating principle and working process of the magnetic circuit in detail. Then according to the mathematical model,the simulations of two kinds of draft sensor were made by Matlab/Simulink. By comparing the two simulations,the result showed that the linearity of this new design with a cruciform excitating magnetic core was changed from 1. 85% to 0. 08%. And the sensitivity was changed from 0. 09 mV/kN to 0. 21 mV/kN,which proved that the new design of draft sensor with cruciform excitating magnetic core was more suitable for the force measurement and control of electro-hydraulic lifting mechanism under the condition of heavy load,which can be more adaptable for bad working environment to improve the tillage effect.

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