控制阀智能定位器控制算法及PID参数整定方法研究

Control Algorithm and PID Parameter Setting Method of Intelligent Positioner for Control Valve

智能阀门定位器作为气动控制阀系统的核心部件,其控制性能直接影响气动控制阀门的响应速度、调节精度、稳定性等,从而影响整个工业回路的控制效果。为提高气动控制阀的响应速度、调节精度和稳定性,减小控制阀性能不佳对工业管路系统的影响,设计了一种基于自私群体优化(SHO)算法的控制器。基于直行程的单作用膜片式气动控制阀的物理特性,对智能阀门定位器的PID控制器参数进行自动整定,测试优化后的控制效果,控制过程不出现超调和振荡现象。本方法为后续优化智能阀门定位器控制算法提供一定的参考价值。

As the core component of the pneumatic control valve system,the control performance of the intelligent valve positioner directly affects the response speed,adjustment accuracy and stability of the pneumatic control valve,thus affecting the control effect of the entire industrial circuit.In order to improve the response speed,adjustment accuracy and stability of the pneumatic control valve and reduce the influence of the poor performance of the control valve on the industrial pipeline system,a controller based on the selfish group optimization(SHO)algorithm is designed.Based on the physical characteristics of the single-acting diaphragm pneumatic control valve with a straight stroke,the PID controller parameters of the intelligent valve positioner are automatically adjusted,and the optimized control effect is tested.The control process does not appear overshoot and oscillation.This method provides a certain reference value for the subsequent optimization of intelligent valve positioner control algorithm.