In order to solve the problem of poor uniformity of sowing operation,a wheat mechanized sowing control system based on STM32 single chip microcomputer is designed.The wheeled driving robot could travel with variable speed.According to the real-time driving speed of the wheeled driving robot,the speed of the seeding motor is controlled to realize the variable speed and uniform seeding.The system used multi-stage control of DC motor speed.The real-time speed signal of the wheeled driving robot is used for The first-stage control parameter,which is controlled by PID.The real-time current and speed of the seeder motor are used for secondary control parameters,which is controlled by fuzzy PID.Simulation results show that the control algorithm has short response time,small overshoot and good control effect.The results of sowing experiment have shown that the control accuracy of seeding amount under constant speed condition is 96.8％and that under variable speed condition is 95.1％.
关键词
播种机/均匀播种/播量控制/多级控制/电机控制
Key words
seeder/evenly sowing/seeding rate control/multi-stage control/motor control
维普
万方数据