变量施肥液压驱动系统设计及试验研究
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摘要
针对变量施肥液压驱动系统转速控制精度不高、存在小范围转速波动及无法实现系统的无差控制等问题,设计开发了变量施肥驱动系统,并采用阀控马达的驱动方式。本文以国内外变量施肥驱动装置研究现状及发展趋势为指导,全球定位技术、地理信息技术和软件工程作为基础,设计了变量施肥驱动系统,利用液压马达排量大、转速低的特点,通过控制进油回路中的比例型流量控制插装阀的开度来实现液压马达的无级调速,进而达成变量施肥中对排肥轴速度控制的要求来实现变量施肥。室内试验结果表明:作业质量符合农艺要求;变量施肥驱动系统设计合理,为变量施肥的试验提供了技术支持。
In view of the low precision of variable speed hydraulic drive system,such as the small range of speed fluctuation,the non differential control of the system and so on,a variable fertilization driving system was developed.This machine adopts the drive mode of valve controlled motor.Based on the research status and development trend of variable rate fertilizer driving device at home and abroad,this paper designs a variable fertilization driving system based on global positioning technology,geographic information technology and software engineering.The design of the variable fertilization drive system using hydraulic motor rotation and flows through the hydraulic oil flow rate proportional characteristics,by controlling the oil inlet flow ratio in a control loop of the cartridge valve to realize the stepless speed regulation of hydraulic motor,in order to meet the requirements of variable fertilization in row fertilizer to achieve speed control shaft variable rate fertilization.Field experiments showed that the quality of operation was in line with agronomic requirements;the design of variable fertilization driving system was reasonable and provided technical support for variable rate fertilization experiment.
In view of the low precision of variable speed hydraulic drive system,such as the small range of speed fluctuation,the non differential control of the system and so on,a variable fertilization driving system was developed.This machine adopts the drive mode of valve controlled motor.Based on the research status and development trend of variable rate fertilizer driving device at home and abroad,this paper designs a variable fertilization driving system based on global positioning technology,geographic information technology and software engineering.The design of the variable fertilization drive system using hydraulic motor rotation and flows through the hydraulic oil flow rate proportional characteristics,by controlling the oil inlet flow ratio in a control loop of the cartridge valve to realize the stepless speed regulation of hydraulic motor,in order to meet the requirements of variable fertilization in row fertilizer to achieve speed control shaft variable rate fertilization.Field experiments showed that the quality of operation was in line with agronomic requirements;the design of variable fertilization driving system was reasonable and provided technical support for variable rate fertilization experiment.
引文
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[12]张林焕,张书慧,王薇,等.基于PLC的液压无级调速变量施肥控制系统的研究[J].农业网络信息,2010(7):9-13,15.
[13]陈广大,王悦刚,陈思睿,等.基于ARM的精确变量施肥控制系统的设计[J].中国农机化学报,2013(4):130-133.
[14]Camp C R,Sadler E J,Evans D E,et al.Variable-rate digitally controlled metering device[J].Transactions of the ASAE,2000,16(1):39-44.
[15]张辉,李树君,张小超,等.变量施肥电液比例控制系统的设计与实现[J].农业工程学报,2010,26(S2):218-222.
[16]呼云龙,孙萌,梁春英,等.基于RBF的电液变量施肥控制系统PID参数整定[J].农机化研究,2015,37(3):14-18.
[17]吴洪兵,薛惠芳.基于模糊PID算法的液力偶合器自控系统[J].矿山机械,2006(10):93-96.
[2]Gokhan Coskun,Turgay Kolcuoglu,Taner Dogramac,et al.Analysis of a priority flow control valve with hydraulic system simulation model[J].Technical Paper,2017(39):1597-1605.
[3]杨军,田敏,陈剑,等.基于PLC的精准变量施肥自动控制系统研究[J].无线互联科技,2016,7(14):50-53.
[4]臧宇.基于John Deere7200型免耕播种机变量施肥技术的研究[D].长春:吉林农业大学,2016.
[5]陈金,赵斌,衣淑娟,等.我国变量施肥技术研究现状与发展对策[J].农机化研究,2017,39(10):1-6.
[6]金梅玉.浅谈液压传动的应用及其发展[J].内蒙古电大学刊,2002(4):101-102.
[7]张立平.现代液压技术应用220例[M].北京:化学工业出版社,2009:269.
[8]刘延俊,关浩.液压与气压传动[M].北京:高等教育出版社,2007.
[9]陈书法,李宗岭,申屠留芳.变量施肥液压系统设计与试验研究[J].液压与气动,2011(12):102-105.
[10]呼云龙,梁春英.基于RBF-PID算法的变量施肥控制系统研究[D].大庆:黑龙江八一农垦大学,2016.
[11]镇江大力液压马达说明书图文[J].互联网文档资源,2012(12):9-18.
[12]张林焕,张书慧,王薇,等.基于PLC的液压无级调速变量施肥控制系统的研究[J].农业网络信息,2010(7):9-13,15.
[13]陈广大,王悦刚,陈思睿,等.基于ARM的精确变量施肥控制系统的设计[J].中国农机化学报,2013(4):130-133.
[14]Camp C R,Sadler E J,Evans D E,et al.Variable-rate digitally controlled metering device[J].Transactions of the ASAE,2000,16(1):39-44.
[15]张辉,李树君,张小超,等.变量施肥电液比例控制系统的设计与实现[J].农业工程学报,2010,26(S2):218-222.
[16]呼云龙,孙萌,梁春英,等.基于RBF的电液变量施肥控制系统PID参数整定[J].农机化研究,2015,37(3):14-18.
[17]吴洪兵,薛惠芳.基于模糊PID算法的液力偶合器自控系统[J].矿山机械,2006(10):93-96.