冲击响应谱
叠加原理
振动器
休克(循环)
振动
控制理论(社会学)
随机振动
反向
时域
信号(编程语言)
振动控制
频率响应
计算机科学
结构工程
声学
数学
数学分析
工程类
物理
经典力学
几何学
医学
控制(管理)
加速度
人工智能
内科学
电气工程
计算机视觉
程序设计语言
作者
Ronghui Zheng,Ma Yan,Xiaohui Wei,Huaihai Chen
标识
DOI:10.1177/10775463221104577
摘要
Shock vibration environments frequently occur and threaten the reliability of products in aerospace engineering. This work deals with the shock response spectra replication control method for multi-shaker vibration test systems. Two synthetic methods for reconstitution of shock response signals with specified shock response spectra are presented. One is the random delay superposition method and the other is the filtering superposition method. The former utilizes a random time delay vector satisfying a normal distribution to simulate a shock response signal with symmetrical attenuated oscillation features while the latter is employed when the measured shock records are available. A time-domain inverse system method is formulated to obtain the multi-input drive signals based on a finite-difference equation. The multi-input multi-output frequency response functions are estimated first and then used to construct the inverse system. The multi-output shock response spectra are calculated by response signals from control sensors. A closed-loop iteration control procedure is provided to correct the drive signals according to the deviations between the responses and corresponding reference values. A numerical simulation and a triaxial vibration test are carried out and the results show the feasibility and effectiveness of the proposed methods.
科研通智能强力驱动
Strongly Powered by AbleSci AI