农机化研究2024，Vol.46Issue(5)：53-59,7.
基于Fuzzy-PID的棉花打顶升降装置设计与试验
Design and Experiment of Cotton Topping and Lifting Device Based on Fuzzy PID
摘要
Abstract
In order to solve the problems of cotton missed beating,over beating and seedling injury caused by the lag of movement between copying and cutter head and low positioning accuracy during the operation of cotton top beating ma-chine,this paper studied the height control system of cotton top beating device based on fuzzy control technology.Taking the lifting system of 3MDZF-6 cotton top beamer as the analysis object,the positioning accuracy requirement of cutter head in the lifting process was determined.Taking the hydraulic valve and hydraulic cylinder as the object,the control model of the lifting device is established in AMESim.Fuzzy rules and related controllers are designed.The feasibility of PID and fuzzy PID control methods is verified from overshoot and response time respectively by Simulink tool.Simulation results show that when the optimal PID parameters are 100800,500 and 30,the response time of input signal is 0.55s.The response time of fuzzy PID control is 0.31s.After comparing and analyzing the control effects of fixed parameter PID control and fuzzy PID control under different disturbances,the overshoot of fuzzy PID control system is 0.84%,and the time required to reach steady state is 0.39s,which is less than 0.64s of fixed parameter PID control system.The method realizes the displacement control of the lifting device,improves the positioning accuracy of the cutter head,and improves the anti-interference and robustness of the control system.It provides reference for the precise control of cotton roof lifting device in cotton field environment.关键词
棉花打顶机/升降装置/高度控制/模糊PID/仿真研究Key words
cotton topping machine/lifting device/height control/fuzzy-PID/simulation research分类
农业科技引用本文复制引用
薛星星,胡斌,贾首星,王健..基于Fuzzy-PID的棉花打顶升降装置设计与试验[J].农机化研究,2024,46(5):53-59,7.基金项目
国家自然科学基金项目(51865051) （51865051）
新疆兵团重大科技项目(2018AB005) （2018AB005）
