玉米精量排种器电驱PID控制系统设计与性能评价（英文）

发布时间：2018-03-19 03:27

本文选题：农业机械　切入点：电驱控制　出处：《农业工程学报》2017年17期 　论文类型：期刊论文

【摘要】：本文研究了一种基于PID的排种器电驱控制系统,取消了播种机采用地轮和链条驱动的方式,提高了播种机的播种质量和作业速度。采用PID算法控制排种盘转速,在目标转速与当前转速差异较大时,加入PID积分分离算法,以减少转速的超调量。通过整定后的PID参数为:K_p=16、K_i=0.05、K_d=36,在其排种盘转速范围为0~24 r/min时,响应时间、超调量、稳态误差分别为0.4秒,1.56%和0.75%。试验结果表明,在12 km/h的高速播种作业条件下,采用该电驱控制系统的排种器排种单粒率仍然可达到98.4%,其重播率和漏播率小于1%。采用本文研究的基于PID算法的排种控制系统可以获得良好的排种质量和更高的排种速度,使排种器更适宜高速精量播种。
[Abstract]:In this paper, a kind of electric drive control system of seeding device based on PID is studied. The method of ground wheel and chain drive is cancelled, the seeding quality and working speed are improved, and the rotation speed of seeding disk is controlled by PID algorithm. When the difference between the target speed and the current speed is large, the PID integral separation algorithm is added to reduce the overshoot of the rotational speed. By setting the PID parameter as: 1 / Kp1 / 16 / kg / kg / kg / d / 36, the response time and overshoot are obtained when the rotation speed of the metering disk is 0 / 24 rmin. The steady-state error is 0. 4 seconds 1.56% and 0. 75% respectively. The experimental results show that under the condition of 12 km/h high speed seeding operation, The single seed rate of seed metering device with this electric drive control system can still reach 98.4, and its rebroadcast rate and missing seeding rate are less than 1. The seed metering control system based on PID algorithm studied in this paper can obtain good seed quality and higher seeding speed. The metering device is more suitable for high speed precision seeding.
【作者单位】：中国农业大学工学院;农业部土壤-机器-植物系统技术重点实验室;凯斯纽荷兰公司;
【基金】：the National Key Research and Development Program of China(No.2017YFD0700703) the National Natural Science Foundation of China(51575515) China Agriculture Research System(CARS-02)
【分类号】：S223.2;TP273

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