基于主列筛选的动态测试传感器配置方法研究
|
摘要
动态测试是获取结构真实动态特性的重要手段之一,传感器配置对于保证动态测试数据的信息量有着重要的影响.尤其是对以试验模态分析为目标的动态测试,传感器配置对于模态分辨率更是决定性因素.在振型独立性的基础上,提出了一种基于主列筛选的传感器配置方法.与现有的逐步累积类或逐步消减类方法相比,该方法无需迭代,一次选择所有测试自由度,计算量小.为了量化比较传感器配置的效果,定义了4个度量指标.采用卫星天线模型进行了数值仿真,结果验证了基于主列筛选的传感器配置方法的有效性.
Dynamic testing is one of the major approaches to understand the dynamic properties of structures. Consequently,sensor placement has great effects on the collection of sufficient information in the testing,even to be the decisive factor for the experimental resolution in dynamic modal analysis.In the paper,a new sensor placement method is developed on the basis of mode independence and principal subset selection.The present method is uniterative and efficient for that the sensor positions are determined all at once.Moreover,four evaluation criteria were proposed and numerical simulations were performed with an antenna model to validate the feasibility of the developed method.
Dynamic testing is one of the major approaches to understand the dynamic properties of structures. Consequently,sensor placement has great effects on the collection of sufficient information in the testing,even to be the decisive factor for the experimental resolution in dynamic modal analysis.In the paper,a new sensor placement method is developed on the basis of mode independence and principal subset selection.The present method is uniterative and efficient for that the sensor positions are determined all at once.Moreover,four evaluation criteria were proposed and numerical simulations were performed with an antenna model to validate the feasibility of the developed method.
引文
1刘福强，张令弥．作动器/传感器优化配置的研究进展．力学进展,2000,30(4): 506～516(Liu Fuqiang,Zhang Lingmi.Ad- vances in optimal placement of actuators and sensors.Ad- vances in Mechanics,2000,30(4): 506～516(in Chinese))
2 Papadopoulos M,Garcia E.Sensor placement methodolo- gies for dynamic testing.AIAA Journal,1998,36(2): 256～263
3 Yuen KV,Katafygiotis LS,Papadimitriou C,et al.Opti- mal sensor placement methodology for identification with unmeasured excitation.Journal of Dynamic Systems, Measurement and Control,2001,123(2): 677～685
4 Tongco E,Meldrum D.Optimal sensor placement of large flexible space structures.Journal of Guidance,Control and Dynamics,1996,19(4): 961～963
5 Kammer DC.Sensor placement for on-orbit modal identifi- cation and correlation of large space structures.Journal of Guidance,Control,and Dynamics,1991,14(9): 251～259
6 Penny JET,Friswell MI,Garvey SD.The automatic choice of measurement locations for dynamic testing.AIAA Jour- nal,1994,32(2): 407～414
7秦仙蓉，张令弥．一种基于QR分解的逐步累积法传感器配置．振动、测试与诊断，2001，21(3)：168～173(Qin Xianrong，Zhang Lingmi.Successive sensor placement for modal par- ing based-on QR-factorization.Journal of Vibration,Mea- surement and Diagnosis,2001,21(3): 168～173(in Chi- nese))
8李书，孙忠凯，向锦武．结构控制中输出反馈鲁棒极点配置优化方法．力学学报，2001，33(1)：71～78(Li Shu，Sun Zhongkai，Xiang Jinwu.Optimal method of output feedback robust pole assignment problem in structural control.Acta Me- chanica Sinica,2001,33(1): 71～78(in Chinese))
9 Golub GH,Van Loan CF.Matrix Computation.John Hop- kins.Third Edition,1996
10费庆国，张令弥，王彤．用于结构计算仿真的神经网络样本点选择方法研究．地震工程与工程振动，2005，25(1)：21～25 (Fei Qingguo,Zhang Lingmi,Wang Tong.Evaluation of sampling techniques for neural networks applied to compu- tational simulation of structures.Earthquake Engineering and Engineering Vibration,2005,25(1): 21～25(in Chi- nese))
2 Papadopoulos M,Garcia E.Sensor placement methodolo- gies for dynamic testing.AIAA Journal,1998,36(2): 256～263
3 Yuen KV,Katafygiotis LS,Papadimitriou C,et al.Opti- mal sensor placement methodology for identification with unmeasured excitation.Journal of Dynamic Systems, Measurement and Control,2001,123(2): 677～685
4 Tongco E,Meldrum D.Optimal sensor placement of large flexible space structures.Journal of Guidance,Control and Dynamics,1996,19(4): 961～963
5 Kammer DC.Sensor placement for on-orbit modal identifi- cation and correlation of large space structures.Journal of Guidance,Control,and Dynamics,1991,14(9): 251～259
6 Penny JET,Friswell MI,Garvey SD.The automatic choice of measurement locations for dynamic testing.AIAA Jour- nal,1994,32(2): 407～414
7秦仙蓉，张令弥．一种基于QR分解的逐步累积法传感器配置．振动、测试与诊断，2001，21(3)：168～173(Qin Xianrong，Zhang Lingmi.Successive sensor placement for modal par- ing based-on QR-factorization.Journal of Vibration,Mea- surement and Diagnosis,2001,21(3): 168～173(in Chi- nese))
8李书，孙忠凯，向锦武．结构控制中输出反馈鲁棒极点配置优化方法．力学学报，2001，33(1)：71～78(Li Shu，Sun Zhongkai，Xiang Jinwu.Optimal method of output feedback robust pole assignment problem in structural control.Acta Me- chanica Sinica,2001,33(1): 71～78(in Chinese))
9 Golub GH,Van Loan CF.Matrix Computation.John Hop- kins.Third Edition,1996
10费庆国，张令弥，王彤．用于结构计算仿真的神经网络样本点选择方法研究．地震工程与工程振动，2005，25(1)：21～25 (Fei Qingguo,Zhang Lingmi,Wang Tong.Evaluation of sampling techniques for neural networks applied to compu- tational simulation of structures.Earthquake Engineering and Engineering Vibration,2005,25(1): 21～25(in Chi- nese))
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心