基于遗传PID的播种机排种器数控加工误差优化研究

Research on the Optimization of NC Machining Error of Seeder Seed Metering Device Based on Genetic PID

为了提高排种机排种器的排种盘的加工质量,在排种盘的加工工艺设计过程中引入了遗传和PID算法,通过遗传算法对PID参数的整定,提高了PID控制器的控制精度,并利用遗传PID算法对加工误差进行反馈,降低了排种盘的加工误差。为了验证加工工艺的优化效果,采用仿真模拟的方法对PID控制器的响应速度和精度、加工实时误差进行了计算,由优化前后的仿真结果可以看出:采用遗传算法可以加快PID控制器的响应速度,提高控制精度,采用遗传PID误差反馈调节机制可以降低排种盘的加工误差。

In order to improve the processing quality of seeder’s seed metering tray, it introduced genetic algorithm and PID algorithm in the process of processing technology design of seed metering tray. Through the adjustment of PID parameters by genetic algorithm, the control accuracy of PID controller is improved, and the processing error is fed back by genetic PID algorithm to reduce the processing error of seed metering tray. In order to verify the optimization effect of processing technology, the response speed and accuracy of PID controller and real-time machining error are calculated by simulation simulation.From the simulation results before and after optimization, it can be seen that the response speed and control accuracy of PID controller can be accelerated by using genetic algorithm, and the machining error of seed metering tray can be reduced by using genetic PID error feedback regulation mechanism.