含时滞控制的主动结构实验研究与参数识别

项目名称： 含时滞控制的主动结构实验研究与参数识别

项目编号： No.11272235

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 宋汉文

作者单位： 同济大学

项目金额： 90万元

中文摘要： 本项目定位于应用基础研究。主要研究主动结构的系统辨识理论和实验技术，包括控制律、时滞、模态和非线性参数等辨识环节。以航天工程中气动弹性、气动加热和伺服控制多场耦合颤振，摩擦导致的精密加工机械系统的切削颤振，桥梁与高层建筑抗风等工程领域中出现的各种含时滞耦合的主动结构系统为应用背景，研究含时滞控制的主动结构实验与参数辨识理论和方法。本课题将主要以实验手段为主研究时滞耦合控制系统的实现问题，研究各种可实现时滞耦合背景下主动结构时滞参数的可辨识性条件与算法，观察无法用仿真计算预测的动力学现象。实验研究的重要性在于，深刻认识各种自然界和工程中存在的环境控制现象，通过观察系统的动力学行为特征和测量获得的输入输出信息进行参数辨识，进行精确、准确的实验建模，并藉此进行减振隔振结构优化、故障诊断、乃至基于既有环境控制下的二次人工主动控制律设计等等一系列工作，具有深刻的理论研究意义和工程应用价值。

中文关键词： 模态分析；时滞；非线性；参数辨识；主动结构

英文摘要： The project is focus on the basic research and its application. It puts emphasis on the theory and experimental techniques of identification for the active structure, including the control law, time delay, modal analysis and non-linear parameters, etc. To study the theory and method for the identification of the active structure which contains time delay control, the flutter caused by the couple of the aeroelasticity, thermo-aeroelasticity and servo control in aerospace engineering, the cutting chatter due to the friction in the processing of the precise machinery system in mechanical engineering and the active structural system constituted by the coupling of wind and bridges or high-rise buildings which involves time delay in construction engineering are all taken as the application background. To observe the dynamic phenomena which can not be predicted through computer simulation, to study the realization problem of the active structural system which contains time delay control, and to obtain the identifiability conditions and algorithms for the parameters of the active structural system which can be realized, the experimental methods will be used widely in the research of this project. The experiment research methods can help the researchers get a better understanding of the phenomenon of a variety of environ

英文关键词： modal analysis；time delay；nonlinear；parameters identification；active structure