高速水稻插秧机仿形系统控制方法

摘要 研究了一种高速水稻插秧机电液控制仿形系统.对于仿形过程的升降和中立两个阶段，提出将力位切换的控制方式运用到插秧机仿形系统的设计上来.根据仿形系统在不同阶段的性能要求，分别运用 Matlab/Simulink 软件建立了仿形系统在升降阶段的位反馈式控制模型和中立阶段的力反馈式控制模型以及二者切换时的力位切换控制模型.并且，为了提高仿形系统的控制性能，采用模糊PID算法来对系统进行控制.仿真研究表明，仿形系统采用模糊PID控制可以显著地提高其在不同工作阶段的控制性能.
Abstract：A kind of high-speed rice transplanter’s electro-hydraulic control profiling system was designed and researched. In consideration of the lifting and neutral stages of the profiling system for high-speed rice transplanters， a pressure-position switch control method was applied in rice transplanters’ profiling system design. According to the performance requirements of rice transplanters at different stages， the models of position-feedback control at the lifting stage and power-feedback control at the neutral stage，as well as the model of power-position switch control were respectively established by using the Matlab/Simulink software platform. Moreover， in order to improve the control performance of the system， the fuzzy PID algorithm was adopted to control the system. The results showed that the fuzzy PID control can greatly promote the control performance of the system compared with the traditional PID control at different stages.