基于模糊PID的恒压气吹辅助式深松机设计与试验  

Design and test of constant pressure pneumatic-assisted subsoiler based on fuzzy PID

作　　者：高伟[1] 高志发 赵永来[1] 毕俊喜[2] 王利鹤[1] 崔红梅 Gao Wei;Gao Zhifa;Zhao Yonglai;Bi Junxi;Wang Lihe;Cui Hongmei(Vocational and Technical College of Inner Mongolia Agricultural University,Baotou,013109,China;Inner Mongolia University of Technology,Hohhot,010051,China)

机构地区：[1]内蒙古农业大学职业技术学院,内蒙古包头014109 [2]内蒙古工业大学,呼和浩特市010051

出　　处：《中国农机化学报》2020年第10期16-21,共6页Journal of Chinese Agricultural Mechanization

基　　金：内蒙古农业大学职业技术学院农业机械化装备应用技术团队项目(2017CXTD08);内蒙古科技成果转化项目(CGZH2018130)。

摘　　要：气吹辅助式深松机具有负载多变性,非线性,大滞后的特点。为保证其深松的气压稳定性与喷射精度,设计一种模糊PID的恒压变量控制系统,该系统由气压传感器、MEMS深松传感器、电机、小型柴油机、电磁阀与单片机组成。控制策略利用Matlab的Simulink中的Fuzzy Logic Controller制定模糊控制规则,并将模型生成C代码,编译后在MC9S12XS128中进行实际控制。该系统达到稳态的时间相比传统PID控制方式缩短20 s,超调量相比传统控制方法小43%,气压波动量约±0.36 kPa。Pneumatic-assisted subsoilerwhich has characteristics of load variability,nonlinear,large hysteresis,in order to ensure its deep loosening pressure stability and precision of injection.The pneumatic-assisted subsoiler has the characteristics of variable load,non-linearity and large lag.In order to ensure the air pressure stability and injection accuracy of the system,this paper designs a fuzzy PID constant pressure variable control system,which consists of air pressure sensor,MEMS deep loose sensor,motor,small diesel engine,solenoid valve and single chip microcomputer.The control strategy makes use of Fuzzy Logic Controller in Matlab Simulink to formulate fuzzy control rules,and generates C code for the model,and carries out actual control in MC9 S12 XS128 after compilation.Compared with the traditional PID control method,the time for the system to reach the steady state is shortened by 20 s,the overshot is 43%smaller than the traditional control method,and the air pressure fluctuation is about±0.36 kPa.

关 键 词：气吹辅助式深松 土壤改良 模糊控制 恒压 

分 类 号：S24[农业科学—农业电气化与自动化] TP273[农业科学—农业工程]