离心式压缩机防喘振控制算法设计  

Design of Anti-surge Control Algorithm for Centrifugal Compressor

作　　者：单光胜 任正云[1] 叶大山 SHAN Guang-sheng;REN Zheng-yun;YE Da-shan(School of Information Science and Technology,Donghua University,Shanghai 201620 China)

机构地区：[1]东华大学信息科学与技术学院,上海201620

出　　处：《自动化技术与应用》2023年第10期15-19,共5页Techniques of Automation and Applications

摘　　要：离心式压缩机在运行过程中,会因为出口背压和入口流量的波动导致喘振。为了能够迅速有效的对压缩机的入口流量和压力进行稳定控制,基于压力和流量的关系,设计串级控制策略来控制防喘振阀的开度;在压缩机工作点处对压缩机模型进行线性化,并通过对模型的简化得到易于预测PI算法实施的简化模型;根据模型对系统内环和外环分别设计预测PI控制器,并在simulink中仿真得到压力和流量的控制结果,最后将算法与传统PID控制器的控制效果进行对比,预测PI算法对流量和压力的抗干扰能力都超过传统PID控制算法。During the operation of centrifugal compressor,surge is caused by the fluctuation of outlet back pressure and inlet flow.In order to quickly and effectively control the inlet flow and pressure of the compressor,a cascade control strategy is designed to control the opening of the anti surge valve based on the relationship between the pressure and flow;The compressor model is linearized at the working point of the compressor,and the simplified model which is easy to implement the predictive PI algorithm is obtained by simplifying the model;According to the model,the predictive PI controller is designed for the inner loop and the outer loop of the system respectively,and the control results of pressure and flow are obtained by simulation in Simulink.Finally,the control effect of the algorithm is compared with that of the traditional PID controller,and the anti-interference ability of the predictive PI algorithm for flow and pressure is better than that of the traditional PID control algorithm.

关 键 词：防喘振 模型简化 预测PI 串级控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]