非线性转子-机匣密封碰磨混沌系统的自适应控制研究  

Study on Adaptive Control of Nonlinear Rubbing Rotor-Box Seal Chaotic System

作　　者：杜艳平[1] 殷玉枫[1] 姚德臣[1] 王松雷[2] 

机构地区：[1]太原科技大学机电学院,太原030024 [2]江苏省特种设备安全监督检验研究院无锡分院,无锡214174

出　　处：《系统仿真学报》2008年第23期6446-6450,共5页Journal of System Simulation

基　　金：山西省自然科学基金(2006011062);山西省青年学术带头人项目资助(200670)

摘　　要：随着旋转机械结构参数的提高,作用在转子上的气流激振力将显著增大。针对转子-机匣密封碰磨系统进行了研究。应用Muszynska非线性密封力模型,建立在气流激振力作用下的转子-机匣碰磨系统耦合动力学方程。根据自适应控制理论,给出一种多重参数自适应控制算法。利用此方法对转子-机匣密封碰磨系统进行了研究,研究结果表明,提出的参数自适应控制律具有较强的稳定控制能力,该方法适合于多重参数非自治复杂混沌系统,在外界干扰下引起混沌状态的情况,可自适应地调整到正常的工作状态,为旋转机械的理论设计和故障动态监测提供了理论依据,具有重要的实际工程应用价值。With the increasing of structural parameters of a rotary machine, the sealing induced airflow excitation on the rotor will significantly increase. By taking Muszynska＇s model for sealing force, the nonlinear dynamic equation of a rotor with rotor-box seal impact/rub foundation was derived. Then, the problem of controlling the chaotic response of the nonlinear rotor system was studied by the adaptive control theory. Numerical simulations on the rotor system were performed with a muti-parameter adaptive algorithm. The numerical results show that the parametric adaptive control method is effective to supress a chaotic response once happened into a required steady state periodic response. This control strategy is helpful to rotor system design and maintenance.

关 键 词：转子-机匣 气流激振 混沌系统 自适应控制 仿真 

分 类 号：TH113.1[机械工程—机械设计及理论]