权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

ACTIVE SHAPE AND VIBRATION CONTROL OF ULTRA LIGHT AND FLEXIBLE SPACE STRUCTURES

超轻且灵活的空间结构的主动形状和振动控制

基本信息

批准号：
15360451
负责人：
OKUBO Hiroshi
金额：
$ 6.46万
依托单位：
OSAKA PREFECTURE UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15360451/
关键词：
FLEXIBLE SPACE STRUCTURES ACTIVE CONTROL VIBRATION CONTROL CONTROL STRUCTURE DESIGN SMART STRUCTURES ROBUST CONTROL FAULT DETECTION PEZOELECTRIC DEVICES

项目摘要

In this research project, the smart structure systems have been proposed for ultra light and flexible space structures such as large flexible space antenna, where many active sensor and actuator devices are imbedded onto the structures for precision control, shape determination, and/or vibration suppression.1.The concept of ultra light space structure has been intensively studied. Researches were made for developing smart structures that realizes virtual rigidity and active vibration suppression.2.Methods of controller design have been developed for shape and vibration control of highly flexible structures. Intensive studies have been carried out emphasizing robustness of the control system against both spillover instability and uncertain structural parameters.3.Methods of vibration control for flexible structures with piezoelectric actuators have been developed. Among them, a sliding mode control has been applied to the model of a cantilever beam with parameter errors. The designed co … More ntroller shows high performance of robustness against the model errors.4.Simultaneous optimal design problem has been solved to find the best set of structural parameters and output controller. One of the proposed design methods is based on Bilinear Matrix Inequality (BMI) and presents an improved branch and bound method for BMI by using graph theory. The second approach is based on Linear Matrix Inequality (LMI). The proposed method has been successfully applied to the simultaneous structure and controller of smart structures.5.A smart structure has been studied for noise reduction and acoustic excitation suppression of flexible structures. The properly designed smart panel activated with piezoelectric actuators is highly effective in suppressing the acoustic excitation of the target structure due to the noise transmitting through the panel structure.6.Model-based FDI (Failure Detection and Isolation systems for smart structures have been studied with careful considerations about robustness with respect to model uncertainties. A new subspace-based system identification algorithm has been developed and successfully applied to the fault detection of a smart structure. Less

在本研究计划中，智能结构系统已被提出用于超轻和柔性的空间结构，例如大型柔性空间天线，其中许多主动传感器和致动器装置被嵌入到结构上以进行精确控制、形状确定和/或振动抑制。研究了实现虚拟刚度和振动主动抑制的智能结构。2.研究了高柔性结构形状和振动控制的控制器设计方法。深入研究了控制系统对溢出不稳定性和结构参数不确定性的鲁棒性。3.研究了压电驱动柔性结构的振动控制方法。其中，滑模控制已被应用到具有参数误差的悬臂梁模型。设计公司 ...更多信息控制器对模型误差表现出很强的鲁棒性。4.同时对结构参数和输出控制器进行了优化设计。提出了一种基于双线性矩阵不等式（BMI）的设计方法，并利用图论方法提出了一种改进的BMI分支定界法。第二种方法是基于线性矩阵不等式（LMI）。该方法已成功地应用于智能结构的结构与控制器的同步设计中。5.研究了一种用于柔性结构降噪和声激励抑制的智能结构。合理设计的智能板与压电致动器激活是非常有效的抑制声激励的目标结构，由于通过面板结构的噪声传输。6.基于模型的故障检测和隔离系统的智能结构进行了研究，仔细考虑的鲁棒性方面的模型不确定性。提出了一种新的基于子空间的系统辨识算法，并成功地应用于智能结构的故障检测。少