Vibration datasets of pendulum system subjected to free vibration using the smartphone's accelerometer (v.1)

The vibration datasets were acquired from the oscillation of a pendulum system, as shown in the attached figure (Pendulum experiment). The data collection was performed via the integrated smartphone accelerometer with the following specifications: - The acquisition was performed using a smartphone with a sampling rate of 100Hz. - The reference name of the smartphone accelerometer is BOSCH BMC150. - The three beams have been subjected to free vibration by applying a load and removing it. - The acquisition includes the vibration data in the three directions (X, Y, and Z-axis) according to the smartphone coordinate system. The objective of this work is to study the dynamic motion of pendulum systems, regarding the oscillation motion, trajectories, and energy in the mechanical system using the smartphone, in order to present an alternative instrument to students in physics to practice their theoretical lessons.

本振动数据集源自单摆系统的振荡运动，如附图所示（单摆实验）。数据采集通过智能手机内置加速度传感器完成，具体参数如下：
- 采集所用智能手机的采样率为100Hz；
- 该智能手机加速度传感器的型号为BOSCH BMC150；
- 通过施加并移除载荷的方式，使三根摆杆产生自由振动；
- 采集内容涵盖智能手机坐标系下X、Y、Z三个轴向的振动数据。
本研究旨在借助智能手机开展单摆系统动力学运动研究，分析该机械系统的振荡运动、运动轨迹与能量特性，以期为物理学科学生提供一种可用于理论课程实践的替代实验工具。