农机化研究2017，Vol.39Issue(8)：237-241,5.
耕深均匀性的拖拉机电控液压悬挂系统
Electronic-Control Hydraulic Hitch System of Tractor with Tillage Depth Uniformity
摘要
Abstract
As the tillage depth uniformity is an important measure in the process of tractor ’ s work , a control method of tractor ’ s electronic hydraulic hitch system with tillage depth uniformity is proposed .Firstly , the system structure and depth control principle are introduced .Secondly , a physical model of the system is established , and the relationship be-tween the lifting arm angle and tillage depth is analyzed , thereby lifting arm angle is used to indirectly measure actual depth value .PID control algorithm for the system of the depth control process is simulated and analyzed .The tillage depth value is set as an input , actual depth value is negative feedback , and the correction of actual deviation with the set value of deep tillage is implemented online .Finally , the field testverifies the 156 mm and 200 mm depth value of the deep tillage control process , and proves the feasibility of the control method .The results show that the proposed control method can ensure uniformity of the process of cultivating deep tillage , and also reduce the intensity of the driver's operation .关键词
拖拉机/电液悬挂系统/耕深均匀性/PID控制Key words
tractor/electronic-control hydraulic hitch system/tillage depth uniformity/PID control分类
农业科技引用本文复制引用
宋玲,谢志勇..耕深均匀性的拖拉机电控液压悬挂系统[J].农机化研究,2017,39(8):237-241,5.基金项目
国家自然科学基金项目（51175173）；湖南省农业机械管理局企业创新项目 （）
