具有输入时滞的柔性结构系统时滞辨识及自适应控制研究

项目名称： 具有输入时滞的柔性结构系统时滞辨识及自适应控制研究

项目编号： No.11472171

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 陈龙祥

作者单位： 上海交通大学

项目金额： 88万元

中文摘要： 本项目对柔性结构时滞系统的时滞辨识及自适应控制进行研究，内容包括：（1）多时滞辨识。研究采用自适应辨识原理对控制回路中的不同时滞量进行辨识，来消除主动控制回路中固有的时滞对控制效果的显著影响。（2）具有参数变化的时滞系统自适应控制设计。系统模型参数本身具有不确定性，而外部环境和工况的改变可能导致结构参数发生变化。考虑当系统参数未知或参数变化时，设计自适应控制器确保时滞动力系统稳定并运行在最优状态。（3）时变时滞系统自适应控制设计。研究能够对控制回路中未知的时变时滞量进行实时跟踪预估，从而使控制性能达到最优的自适应控制设计方法。（4）非线性特性未知的时滞系统自适应控制设计。考虑系统中未知的非线性特性，拟采用模糊逻辑系统将未知非线性特性用未知模糊参数描述，从而对柔性结构时滞系统进行自适应控制设计。（4）时滞实验。以柔性结构为对象开展时滞辨识和时滞自适应控制实验研究验证理论成果的有效性。

中文关键词： 时滞系统；柔性结构；自适应控制；时滞辨识

英文摘要： In this project, time delay identification and adaptive control of flexible structure with input delays are studied. The main contents include: (1) Identification of multiple time delays. In order to avoid the significant impact of inherent time delay on the control effect in the control loop, the technique of adaptive identification is used to identify the different time delays in the control loop. (2) Adaptive control design for time delay system with parameter variation. There is uncertainty in the model parameters of the system, and the structural parameters may vary with the external environment and working conditions. Considering the system with unknown parameters or varying parameters, an adaptive controller is designed to ensure that the system is stable and running optimally. (3) Adaptive control design for time-varying delay system. An adaptive control method is studied which can real-time track the unknown time-varying delay in the control loop to guarantee the optimal control performance. (4) Adaptive control design for time delay system with unknown nonlinearities. Considering the unknown nonlinearities in the system, the unknown fuzzy parameters can be used to describe the unknown nonlinearities in the system by means of the fuzzy logic system, and then the flexible structural systems with time delays can be control via the adaptive controller. (5) Time delay experiment. Experiment study will be carried out in this project to verify the validity of the theoritical results.

英文关键词： time delay system;flexible structure;adaptive control;time delay identification