Dataset collected using a control strategy on a triaxial platform

This dataset presents experimental results from a multiaxial vibration test campaign conducted on a triaxial electrodynamic shaker platform. The aim was to assess how different acceleration-control strategies influence the dynamic response of the platform and cross-axis effects. Four closed-loop strategies were investigated: (1) single-point control using one triaxial accelerometer, (2) control using three single-axis accelerometers, one per axis, (3) distributed control using three triaxial accelerometers, and (4) multi-point response with rectangular control through three accelerometers. Acceleration measurements were collected during sweep-sine and random vibration tests over the 5-2000 Hz frequency range.

All data were acquired on the LMN triaxial vibration test bench, which enables coupled or uncoupled excitation along three orthogonal axes. Signal generation, closed-loop control, and data acquisition were performed using Spectral Dynamics Jaguar hardware and software. The instrumentation consisted of five triaxial accelerometers and three single-axis accelerometers mounted on the platform. Sweep-sine tests were conducted at 1.5 g with a sweep rate of 1 octave per minute, whereas random vibration tests were performed at 1 g-RMS for 5 min. The dataset includes raw sweep-sine spectra (.frq), frequency response functions (.frf), random-vibration power spectral density files (.psd), and MATLAB post-processed figure files (.fig).

本数据集呈现了在三轴电动振动台平台上开展的多轴振动试验项目所获得的实验结果。本次试验旨在评估不同加速度控制策略对平台动态响应及轴间串扰效应的影响。本次研究共考察了四种闭环控制策略：(1) 采用单台三轴加速度计（triaxial accelerometer）的单点控制；(2) 采用三台单轴加速度计（single-axis accelerometer）的分轴控制，每轴各配置一台；(3) 采用三台三轴加速度计的分布式控制；(4) 依托三台加速度计实现矩形控制的多点响应控制。加速度测量数据采集自5~2000Hz频率范围内的扫频正弦振动试验与随机振动试验。

所有数据均采集自LMN三轴振动试验台，该平台可实现沿三个正交轴的耦合激励与非耦合激励。信号生成、闭环控制及数据采集均通过Spectral Dynamics Jaguar软硬件系统完成。试验装置包含安装于平台上的五台三轴加速度计与三台单轴加速度计。扫频正弦振动试验设置为1.5g峰值，扫频速率为每分钟1个倍频程；随机振动试验设置为1g均方根值（RMS），持续时长5分钟。本数据集包含原始扫频正弦频谱文件（.frq）、频率响应函数文件（.frf）、随机振动功率谱密度文件（.psd），以及经MATLAB后处理生成的图形文件（.fig）。