期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2018

44

3

326-329

10.13331/j.cnki.jhau.2018.03.017

湖南省重点研发计划项目（2016NK2120）； 湖南省政府重大专项（湘府阅[2014]35号）；

本校为第一机构

针对联合收割机作业过程中割台高度调节依赖机手经验的现状,为碧浪4LZ–1.2履带自走式联合收割机设计了一种割台高度自适应调节系统。该系统主要由作物高度检测装置、割台高度检测装置、液压执行装置和控制单元组成。系统采用单侧红外反射的方式检测作物高度,通过位移传感器测量举升液压缸伸缩量来检测割台高度,通过改变电磁阀的闭合时间及方向实现割台升降,以作物实际切割高度为控制对像,采用模糊PID算法进行控制。试验结果表明,割台高度调节的最大误差为2 cm,作物高度检测装置的检测误差范围为0~2 cm,割台在上升和下降时系统响应速度分别为0.22 m/s和0.16 m/s。

In view of the current situation of the height adjustment of combined harvester relying on the experience of theoperator, a kind of the adaptive height adjustment system is designed for the Bilang 4LZ-1.2 crawler self-propelled combine-harvester. The system is mainly composed of the crop height detector, the header height detector, the hydraulic actuator and the control unit. The height of the crops and the header were detected by the unilateral infrared reflection device and the lifting height of the hydraulic cylinder with displacement sensor, respectively. The rising and falling of theheade...