SVD Approach for Actuator and Sensor Placement in Active Vibration Control of Large Cable Net Structures  

作　　者：Yang Liu Weizhong Zhang Xiuyun Meng 

机构地区：[1]School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Journal of Beijing Institute of Technology》2019年第4期675-686,共12页北京理工大学学报（英文版）

基　　金：National Natural Science Foundation of China(11290153)。

摘　　要：The actuator and sensor placement problem for active vibration control of large cable net structures is investigated in this paper.Since the structures exhibit closely spaced modes in the range of low frequencies,the number of modes to be considered is quite large after modal truncation,while only a limited number of actuators and sensors are to be placed.This makes it hard to determine the actuator and sensor locations with the existing placement methods in the literature such as the methods based on the controllability/observability grammian.To deal with this issue,an actuator and sensor placement method based on singular value decompositions(SVD)of the input and output matrices is proposed,which guarantees the modal controllability and observability of the system.The effectiveness of the SVD based method is verified through numerical simulations in which comparisons are conducted between randomly-chosen locations and the optimal ones obtained by a genetic algorithm.

关 键 词：actuator and sensor placement large cable net structures active vibration control 

分 类 号：O326[理学—一般力学与力学基础]