模糊自适应PID在气液增力缸压力控制中的应用  

Application of Adaptive Fuzzy-PID for Controlling of Pressure in Pneumatic-Hydraulic Intensifier

作　　者：张向南[1] 周丽娟[1] 李全俊[1] 

机构地区：[1]中国兵器工业第五八研究所弹药自动装药研究应用中心,四川绵阳621000

出　　处：《兵工自动化》2013年第8期71-74,共4页Ordnance Industry Automation

摘　　要：为提高气液增力缸的输出压力精度并增强系统的一致性和稳定性,设计一种模糊自适应PID控制器。根据气动伺服系统的建模推导出比例阀控制气液增力伺服系统的数学模型,并结合模糊自适应控制原理,以离线生成控制查询表在线查询的方式,实现实时自整定PID参数。通过建立系统仿真模型,得到比常规PID控制更好的稳态和动态特性的控制系统。仿真结果证明,该方法可以大大地提高气液增力缸在压力控制中的控制精度。For improving accuracy of output pressure and enhancing the uniformity and stability of the pneumatic- hydraulic intensifying cylinder, design a controller of adaptive fuzzy PID. According to the model of the pneumatic servo system, derive to the mathematic model of proportional valve control pneumatic-hydraulic servo system. Combine with the theory of adaptive fuzzy PID, based on generating polling list off-line and on-line inquires, realize the real-time auto-setting PID parameter. Through establish system simulation model, compared with regular PID, achieve a better system with stationary state and dynamic response characteristic. The simulation results prove that the method can greatly improve control accuracy of pneumatic-hydraulic intensifying cylinder.

关 键 词：气液增力缸 PID控制器 模糊自适应 压力 

分 类 号：TP273.3[自动化与计算机技术—检测技术与自动化装置]