非线性松动转子密封混沌系统状态观测器方法  

Study on State Observer Method of Nonlinear Loose Rotor Seal Chaotic System

作　　者：李捷[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：《系统仿真学报》2011年第1期167-171,共5页Journal of System Simulation

基　　金：山西省自然科学基金(2006011062);山西省自然科学基金(2008012006-3)

摘　　要：应用Muszynska非线性密封力模型,建立在气流激振力作用下的松动转子系统耦合动力学方程。根据状态观测器理论给出状态观测器控制对应算法。利用此方法对松动转子密封系统进行了仿真研究,研究结果表明,基于状态观测器的混沌反馈控制方法具有很强的稳定控制能力,该方法适合于被控系统的混沌状态不可能全部直接测量,或状态反馈不可能物理实现的情况下,用重构状态代替真实状态组成状态反馈,将系统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。By taking Muszynska＇s model for sealing force, the nonlinear dynamic equation of a rotor with loosing foundation was derived. According to state observer theory, a state observer control approach can be given. The approach was successfully applied to simulate a chaotic system of the rotor system. The simulation results show that the feedback chaotic control method of state observer possesses strong capability for stablizing the control. This method can be adjusted to normal working state through reconstructive state in order to get the state feedback. This method is suit to be for the chaotic state caused by outside perturbation, so which is impossible to have full direct measure or state feedback which can not to be realized by physical method. This control strategy is helpful to rotor system designed and maintenance.

关 键 词：松动转子 气流激振 混沌系统 状态观测器 

分 类 号：TH113.1[机械工程—机械设计及理论] TP13[自动化与计算机技术—控制理论与控制工程]