非线性松动转子密封混沌系统的自适应控制研究  

ADAPTIVE CONTROL OF CHAOTIC RESPONSE IN A SEALED ROTOR WITH LOOSE FOUNDATION

作　　者：高崇仁[1] 殷玉枫[1] 姚德臣[1] 

机构地区：[1]太原科技大学机电学院,太原030024

出　　处：《机械强度》2009年第1期36-40,共5页Journal of Mechanical Strength

基　　金：山西省自然科学基金资助项目(2006011062)~~

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。文中针对松动转子密封系统进行研究。应用Muszynska非线性密封力模型,建立气流激振力作用下的松动转子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,利用此方法对松动转子密封系统进行研究。研究结果表明,文中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时候,可自适应地调整到正常的工作状态。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 the rotor with loosing 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 are performed with a mnlti-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：松动转子 气流激振 混沌系统 自适应控制 

分 类 号：O347.6[理学—固体力学] TH113.1[理学—力学]