无级调速技术在播种机中的改进应用  

Improved Application of Stepless Speed Control Technology in Seeding Machine

作　　者：赵立新[1,2] 张业民[1,2] 宋吾力[3] 张昆[1,2] 丁筱玲[1,2] 

机构地区：[1]山东农业大学机械与电子工程学院,泰安271018 [2]山东省园艺机械与装备重点实验室,泰安271018 [3]泰山医学院信息工程学院,泰安271000

出　　处：《计算机系统应用》2014年第6期250-254,共5页Computer Systems & Applications

基　　金：山东省科技发展计划项目(2010GNC10964);山东省泰安市科技发展计划项目

摘　　要：为避免地轮打滑引起小麦播种性能不稳,该研究抛开传统地轮驱动的纯机械播种方式,采用自我设计研制的双气吸排种盘、半开放式盛种器、无级变速调速器及播种机相应配件等,创新性地将无级变速技术与反馈控制技术较完美结合应用于小麦双线精播机。该技术中,排种轴的驱动力取自拖拉机尾部动力输出,采用单片机无线传递方式,在机具前进速度、小麦播量及播种株距之间建立起一套控制算法,使排种轴转速实时跟踪机具前进速度,以保障机具变速前进状况下种距的恒定。样机试验表明,该无级调控小麦双线精播机达到落种精确到每一粒,性能稳、误差小、株距恒定的预期目标.In order to avoid wheat sowing instability caused by the land wheel skid, the study puts aside the purely mechanical seeding mode which is driven by traditional wheel. It uses a self-designed and developed double suction seed plate, a semi-open seed container, CVT governor, corresponding accessories of sowing machine and so on. The perfect combination of CVT technology and feedback control technology is applied to the wheat double precision seeder. In this technique, the force of seed shaft is from the power output of the tractor tail. It uses wireless transfer mode of SCM to establish a set of control algorithm between forward speed, wheat sowing quantity and sowing spacing. The seeding shaft speed tracks the forward speed in order to ensure the constant distance when trans-miss the progress status. Prototype tests indicate that the wheat double precision seeder developed by air suction stepless regulation can reach precisely the expected target about the fall for each particle. Meanwhile, it has steady performance, small errors and spacing constant.

关 键 词：无级变速 双线精播 反馈 控制算法 实时跟踪 

分 类 号：S223.2[农业科学—农业机械化工程]