基于模糊滑模迭代的注射机液压系统控制  

Hydraulic System Control of Injection Molding Machine Based on Fuzzy Sliding Mode Iteration

作　　者：杨桂府[1] 杨扬[2] Yang Guifu;Yang Yang(Changzhou College of Information Technology,Changzhou 213164,China;Nanjing Normal University,Nanjing 210097,China)

机构地区：[1]常州信息职业技术学院,江苏常州213164 [2]南京师范大学,江苏南京210097

出　　处：《塑料科技》2019年第9期106-109,共4页Plastics Science and Technology

基　　金：常州市科技局项目(CM20153001)

摘　　要：注射机液压控制系统是一个非线性、大时滞性、时变性的复杂过程,传统PID控制精度较低、灵敏性较差,为此设计了一种模糊滑模迭代的注射机液压控制器。其中迭代学习控制算法用于实现目标值的跟踪;滑模控制器采用液压系统的偏差及其变化率对滑模输出进行模糊化和解模糊化处理;通过实时控制调节迭代学习控制器的增量得到理想的控制效果。仿真结果表明,与传统PID控制方法相比,模糊滑模迭代控制算法超调量小、调节速度快,能够满足注射机液压系统控制精度与鲁棒性的要求。Hydraulic control system of injection moulding machine is a complex process with nonlinearity,large time-delay and time-varying.Traditional PID control has low precision and poor control sensitivity.For this reason,a hydraulic controller of injection moulding machine with fuzzy sliding mode iteration is designed.Iterative learning control algorithm is used to track the target value;sliding mode controller deals with the deviation and change rate of hydraulic system;fuzzy controller fuzzifies and defuzzifies the output of sliding mode;and real-time control adjusts the increment of Iterative Learning Controller to obtain ideal control effect.The simulation results show that,compared with the traditional PID control method,the control method has the advantages of small oversupply and fast adjustment speed.Fuzzy sliding mode iterative control algorithm can meet the control accuracy and robustness requirements of the hydraulic system of injection moulding machine.

关 键 词：注射机 迭代学习 滑模控制 模糊控制 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业]