非光滑三明治系统状态估计与故障预报研究

项目名称： 非光滑三明治系统状态估计与故障预报研究

项目编号： No.61263016

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 自动化技术、计算机技术

项目作者： 周祖鹏

作者单位： 桂林电子科技大学

项目金额： 43万元

中文摘要： 非光滑三明治系统广泛存在于机械系统、电路系统和通信系统中，针对这类特殊系统构建特殊的状态估计观测器和故障预报观测器来实现准确的状态估计和故障预报意义重大。本项目拟根据迟滞非光滑三明治系统的特点，采用关键项分离原理和切换函数，建立描述该类系统的非光滑状态空间方程。据此，构造能够随系统工作区间变化而自动切换的迟滞非光滑观测器，并给出相应的收敛定理及其证明。在考虑模型不确定性和干扰的情况下，通过引入广义干扰向量概念，结合残差频谱分析和观测器零点配置方法，研究构建死区、间隙和迟滞三明治系统的鲁棒状态估计观测器和鲁棒故障预报观测器。 本项目的研究，可望在复杂非线性系统观测器设计理论、复杂非线性系统故障预报方法等方面有所创新和突破，获得有学术意义实用价值的研究成果，为工程实践中广泛存在的非光滑三明治系统的状态估计和故障预报提供新的理论与技术。

中文关键词： 非光滑观测器；状态估计；三明治系统；故障预报；鲁棒

英文摘要： Non-smooth sandwich systems widely exist in mechanical system, electronic system and communication system. In order to estimate the states of the system and detect the fault of the system more accurate, it is necessary to construct special types of state estimation observer and fault detection observer for the special systems. Based on the characteristics of the sandwich system with hysteresis, a non-smooth state-space function will be constructed in terms of the key term separation principle and switching functions. Then, a non-smooth observer which can switch among the different operating zones automatically according to the change of the operation conditions will be proposed based on the obtained non-smooth state-space model. The convergence theorem and its proof of the proposed non-smooth observer will be given as well. Under the consideration of the model uncertainties and disturbances of the system, by introducing the concept of general disturbance vector, spectrum analysis of the residuals, and zeros assignment, the research will focus on the development of the state estimation and fault detection observers for the non-smooth sandwich systems with dead zone, backlash and hysteresis. Some innovations and breakthroughs in the observer construction theory and fault detection field for complex nonlinear

英文关键词： Non-smooth observer；State estimation；Sandwich system；fault diagnosis；robust