Research on an Automatic Control System of Integral Separation PID Control Algorithm

An automatic control system for a harvester was designed based on the integral separation PID control algorithm under the control of a single-chip microcomputer. With STC12C5A60S2 as the control core, the system collects corresponding data and information through the threshing drum rotation speed signal detection module, the grain feeding amount detection module, the threshing drum torque detection module, and the grain auger shaft rotation speed module. After being processed by the coordinated comprehensive algorithm inside the system, it outputs corresponding control signals to the electric push rod in real time, regulates its AD value to drive the action of the HST transmission, and then obtains the optimal integral separation limit β value to control the harvester traveling system to reach the optimal state. It can also handle sudden situations such as overload speed reduction or locked rotor during the harvester's operation in real time. Finally, through simulation experiments, the comparison of the control effects between the traditional PID control algorithm and the integral separation PID control algorithm under three different integral separation limits was completed respectively. The results of the simulation experiments show that the optimal design of the mechanical control system based on the integral separation PID control algorithm must be based on the traditional PID control algorithm and appropriately adjusted with the optimal parameter proportion.