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针对联合收割机喂入量主要基于人工经验调控,受人为因素影响较大的问题,分析割台螺旋输送器动力学模型,对螺旋输送器功率和喂入量的关系进行研究;开发基于CAN总线通信联合收割机割台工况嵌入式监测系统,对联合收割机工况进行实时监测。结果表明:1)螺旋输送器功率和喂入量具有数学关系;2)本研究设计的联合收割机割台工况嵌入式监测系统运行可靠,能够实时采集联合收割机工况信息;3)对试验数据回归分析,得到了螺旋输送器功率和喂入量的数学表达式,其相关系数为R2=0.909 9,表明监测割台螺旋输送器功率预测喂入量是可行的。
The feeding amount of combine harvester is mainly controlled based on human experience, which is greatly influenced by human factors. The dynamics model of the header screw conveyor is analyzed, and the relationship between the screw conveyor power and the feeding amount is researched. The CAN bus Communication Combine harvester header condition embedded monitoring system for real-time monitoring of combine harvester conditions. The results show that: 1) there is a mathematical relationship between screw conveyor power and feed volume; 2) the embedded monitoring system of combine harvester header designed in this study is reliable and can collect the working condition information of combine harvester in real time; 3) The regression analysis of the experimental data obtained the mathematical expression of screw conveyor power and feed amount, with a correlation coefficient of R2 = 0.909 9, indicating that it is feasible to monitor the power feed volume of the screw conveyor.