压缩空气制冷测控系统的防喘振方法

Anti-Surge Method of Compressing Air Refrigeration Measurement and Control System

针对固定极限喘振控制方法存在的缺陷,采用新型可变极限防喘振系统,设计多重防喘振方法。介绍该控制系统的原理及控制方法,针对喘振问题设定不同控制线,根据不同的控制线产生不同的控制响应,将闭环PI控制和开环控制相结合,设计多重防喘振方法,并在压缩空气制冷系统中进行试验验证。试验结果表明:该系统运行可靠,参数在误差允许的范围内,能准确达到设定值,并且长时间处于稳定状态,使喘振得到有效控制。

For fixing limit anti-surge control method defects,using the new variable limit anti-surge system,the multiple anti-surge method is designed.The principle of the control system and control method is introduced.Aiming to surge,set different control lines.According to different control lines,creates different control responses.The Combine close-loop PI control with open-loop control and the multiple anti-surge methods are designed,and experimental verification in refrigeration system by compressing air.The results showed that the system is reliable,and the parameters in the range of allowable error.The set value can be reached accurately,and in a stable state for a long time.The surge is controlled effectively.