非线性裂纹转子密封混沌系统自适应控制  

Adaptive Control of Nonlinear Cracked Rotor Seal Chaotic System

作　　者：殷玉枫[1] 姚德臣[1] 李捷[1] 

机构地区：[1]太原科技大学机电工程学院,太原030024

出　　处：《农业机械学报》2009年第7期203-207,216,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：山西省自然科学基金资助项目(2006011062)

摘　　要：应用Muszynska非线性密封力模型,建立了在气流激振力作用下的裂纹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。利用此方法对裂纹转子密封系统进行了研究,研究结果表明,所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。With the increase of structural parameters of a rotary machine, the sealing induced airflow excitation on the rotor increases significantly. By taking Muszynska＇ s model for sealing force, the nonlinear dynamic equation of a rotor with cracked foundation was derived. According to adaptive control theory, a multi-parametric adaptive algorithm was presented. Numerical simulations on the rotor system were performed with this method. The results show that the parametric adaptive control method possesses strong capability of stability in control. The methodology is appropriate to the complexity of multiple parameters of non-self-governing chaotic system, when the system goes into chaos by outside disturb, and the working state can be adjusted to normal timely. The research results also provide the theoretical foundation for theory design of rotary machine and fault dynamic monitoring, and have high practical value.

关 键 词：裂纹转子 气流激振 混沌系统 自适应控制 

分 类 号：TH113.1[机械工程—机械设计及理论] TP273.2[自动化与计算机技术—检测技术与自动化装置]