摘要
针对阀控液压马达变量施肥系统PID控制算法,参数整定过程复杂、经验性强、工作量大的不足,提出了基于遗传算法整定PID的方法。利用变量施肥系统仿真模型,研究遗传算法整定PID与临界比例度法整定PID方波响应曲线,表明遗传算法PID控制器响应速度快、超调量小、调节时间短。在变量施肥试验台上进行系统稳态性能试验,结果表明:遗传算法PID参数系统稳态跟踪误差小,调速范围跟踪线性度好。遗传算法PID精简了参数整定过程,优化了参数整定结果。
Aim to the problems of complicated adjustment of PID parameter,time-consuming and strongly empirical in variable rate fertilization system,genetic algorithm PID( GA-PID) tuning method was proposed to implement flexible parameter adjustment.By using Matlab/Simulink simulation,the square wave response of traditional PID and GA-PID system were compared.The results showed that GA-PID control strategy was superior to the conventional PID in response speed,overshoots,and setting time.System steady performance experiment was carried out at variable rate fertilization test bench.The results showed that GA-PID control algorithm of variable rate fertilization system was very accurate,the static error was small,and speed range linearity as good.GA-PID retrenched the process of parameter tuning and optimized the parameter tuning results.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2013年第S1期89-93,88,共6页
Transactions of the Chinese Society for Agricultural Machinery
基金
"十二五"国家科技支撑计划资助项目(2012BAD04B01
2011BAD20B03
2011BAD20B06)
黑龙江省教育厅资助项目(12511355)
黑龙江农垦总局资助项目(HNK11A-07-01)
关键词
变量施肥
遗传算法
控制系统
参数优化
Variable rate fertilization Genetic algorithm Control system Parameter optimization
