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当前位置: 首页 > 文章 > 基于电机驱动的定位施肥控制系统设计与试验 农业机械学报 2019 (1) 91-95,114
Position: Home > Articles > 基于电机驱动的定位施肥控制系统设计与试验 Transactions of the Chinese Society for Agricultural Machinery 2019 (1) 91-95,114

基于电机驱动的定位施肥控制系统设计与试验

作  者：
赵硕;宗泽;刘刚
单  位：
中国农业大学
关键词：
定位施肥;控制系统;电机驱动;设计;试验
摘  要：
在准确的位置投入适量的肥料是满足农田精细施肥作业的基本需求.为了实现以玉米苗期根部位置为依据的定位施肥作业,设计了一种基于电机驱动的定位施肥控制系统,该系统硬件部分主要由上位机、下位机处理器、电机和驱动器组成.分析了定位施肥过程中的迟滞现象,建立了施肥位置滞后模型;将滞后距离作为提前量,实时置入控制系统,提出了阈值控制算法;最后,通过试验平台对该控制系统稳定性和准确性进行验证.试验结果表明,该控制系统在电机转速50~201 r/min的范围内运行稳定,平均系统响应时间为0. 8 s.
作  者：
ZHAO Shuo;ZONG Ze;LIU Gang;Key Laboratory of Modern Precision Agriculture System Integration Research,Ministry of Education,China Agricultural University;Key Laboratory of Agricultural Information Acquisition Technology,Ministry of Agriculture and Rural Affairs,China Agricultural University;
关键词：
position fertilization;;control system;;motor driven;;design;;test
摘  要：
Appropriate amount of fertilization in an accurate position is the basic requirement for meeting the precise fertilization operation in the field. The domestically used ground-wheel-driven fertilizer applicator can not be controlled in real time to meet the requirements of fertilization accuracy. The outergroove wheel fertilizer has a simple structure to be controlled by a motor easily. In order to realize the positioning and fertilization operation based on the root position of the corn seedling stage,a position fertilization control system was designed based on a motor drive,which mainly included the master computer,the slave computer processor,the motor and the driver. The problem of fertilization lag was widespread in fertilization research,which was effectively solved. The factors causing the delay time were analyzed and the lag model of the fertilization position was established,the stability of the control system was improved and the error was reduced. A threshold control algorithm was proposed for placing the lag distance as the advance amount into the control system. The stability and accuracy of the control system were verified by a test platform. The test results show that the control system can control the speed of the fertilizing motor in the range of 50 ～ 201 r/min stably,and complete the position fertilization with an average response time of 0. 8 s. The results of this study can reduce the delay of fertilization and improve the accuracy of fertilization positioning.

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