小型割前脱粒收获机双滚筒恒速控制研究  

Study on Double- cylinder's Constant- speed Control of a Miniature Preceding Reaping Threshing Harvester

作　　者：刘宏博[1] 何培祥[1] 蒋猛[1] 袁瑛[1] 康杰[1] 赵进[1] 朱康熹[1] 

机构地区：[1]西南大学工程技术学院,重庆400715

出　　处：《农机化研究》2016年第9期210-213 223,共5页Journal of Agricultural Mechanization Research

基　　金：重庆市科委应用开发计划项目(CSTC2013yykfa80003);中央高校基本业务费专项(XDJK2012B001)

摘　　要：对一种小型割前脱粒收获机双滚筒恒速控制问题进行了研究。建立了行走速度与滚筒角速度的数学模型,确定了在作物密度不可控的情况下,可以通过控制行走速度来稳定滚筒角速度。进行基本试验得到了收获机在额定工作时的喂入量和滚筒转速范围,以此作为恒速控制的基准值。在实际工作过程中,滚筒转速传感器实时检测滚筒转速反馈给控制器,控制器通过控制步进电机调节变量泵排量来控制收获机减速或加速,从而稳定滚筒转速。试验结果表明:该控制系统提高了割前脱粒收割机双滚筒工作转速的稳定性,减轻了操作者的劳动强度。This paper studies the double- cylinder's constant speed- control problem of a miniature preceding reaping threshing harvester. Through creating a mathematical model based on traveling speed and the angular speed of the cylinder,in the situation of crop's density uncontrollable,we can stabilize the angular speed of the cylinder by controlling the traveling speed. We obtain the range of feed rate and the rotational speed of cylinder as the reference value of constant speed control when the harvester at rated operation by the basic test. In the process of working,cylinder's speed sensor detects the rotational speed of cylinder in the real time,and feeds it back to controller. Controller controls stepper motor to adjust pump output,which affects harvester to decelerate or accelerate,thus stabilizing the angular speed of the cylinder. The test result shows that the control system can both improve the stability of cylinder's rotating speed and reduce labor intensity.

关 键 词：收获机 割前脱粒 双滚筒 恒速控制 稳定性 

分 类 号：S225[农业科学—农业机械化工程]