2026-10-09T09:18:18Z
https://api.figshare.com/v2/oai
oai:figshare.com:article/32025606
2026-09-18T06:45:13Z
category_26764
category_26758
item_type_3
month_year_09_2026
SNU Planetary Gearbox Dataset
Jinoh Yoo (23734797)
Taehyung Kim (23911)
Jong Moon Ha (23892669)
Byeng Dong Youn (23725917)
Mechanical engineering asset management
Dynamics, vibration and vibration control
Gear
Planetary gearbox
Wind turbine
Condition monitoring
Fault diagnosis
<p>=============================================================================</p><p dir="ltr">SNU Planetary Gearbox Dataset</p><p>=============================================================================</p><p><br></p><p dir="ltr">1. Dataset Overview</p><p>-------------------</p><p dir="ltr">Title: SNU Planetary Gearbox Dataset</p><p><br></p><p dir="ltr">Description:</p><p dir="ltr">This repository provides vibration and encoder signals acquired from a 2 kW-class planetary gearbox testbed for fault diagnosis research. The dataset consists of 14 experimental configurations, covering seven health/severity conditions under two operating modes: stationary and non-stationary operation.</p><p><br></p><p dir="ltr">Dataset version: Version 5</p><p dir="ltr">License: Creative Commons Attribution 4.0 International (CC BY 4.0)</p><p><br></p><p dir="ltr">2. Experimental Specifications</p><p>------------------------------</p><p dir="ltr">Sampling frequency:</p><p dir="ltr">- 25,600 Hz</p><p><br></p><p dir="ltr">Recording duration:</p><p dir="ltr">- Approximately 100 minutes, or 6000 s, per experimental configuration</p><p><br></p><p dir="ltr">Operating modes:</p><p dir="ltr">- Stationary operation: approximately 1579 rpm</p><p dir="ltr">- Non-stationary operation: sinusoidal speed-varying operation from approximately 521 to 1588 rpm with a 20-s period</p><p><br></p><p dir="ltr">Testbed:</p><p dir="ltr">- 2 kW-class planetary gearbox testbed</p><p dir="ltr">- Single-stage fixed-ring planetary gearbox configuration</p><p><br></p><p dir="ltr">Gear configuration:</p><p dir="ltr">- Sun gear: 31 teeth</p><p dir="ltr">- Planet gear: 31 teeth x 3</p><p dir="ltr">- Ring gear: 95 teeth</p><p><br></p><p dir="ltr">Sensors:</p><p dir="ltr">- Vibration sensor: PCB Piezotronics 601A02 single-axis ICP accelerometer</p><p dir="ltr">- Encoder: ONO SOKKI MP-981 rotation detector with a 60-tooth detection gear</p><p><br></p><p dir="ltr">3. Fault Modes and Severities</p><p>-----------------------------</p><p dir="ltr">The dataset includes one healthy condition and three artificial fault modes.</p><p><br></p><p dir="ltr">- Normal</p><p dir="ltr"> Baseline healthy condition</p><p><br></p><p dir="ltr">- Planet-ring fault</p><p dir="ltr"> Fault on the planet gear tooth meshing with the ring gear</p><p dir="ltr"> Groove diameter: 0.75 mm, 1.00 mm, 1.25 mm</p><p><br></p><p dir="ltr">- Planet-sun fault</p><p dir="ltr"> Fault on the planet gear tooth meshing with the sun gear</p><p dir="ltr"> Groove diameter: 0.75 mm</p><p><br></p><p dir="ltr">- Sun fault</p><p dir="ltr"> Fault on the sun gear tooth</p><p dir="ltr"> Groove diameter: 0.50 mm, 0.75 mm</p><p><br></p><p dir="ltr">Here, groove diameter denotes the nominal diameter of the machined artificial line-shaped fault in millimeters.</p><p><br></p><p dir="ltr">4. Repository Contents</p><p>----------------------</p><p dir="ltr">This repository contains the following files:</p><p><br></p><p dir="ltr">- SNU Planetary Gearbox Dataset.zip</p><p dir="ltr"> Primary data archive containing vibration and encoder signals.</p><p><br></p><p dir="ltr">- SNU_Figshare_code.zip</p><p dir="ltr"> MATLAB validation code package used to reproduce the technical validation figures.</p><p><br></p><p dir="ltr">- Readme.txt</p><p dir="ltr"> Dataset description, folder hierarchy, acquisition protocol, and usage information.</p><p><br></p><p dir="ltr">- datasummary.csv</p><p dir="ltr"> Machine-readable file-level metadata, including file path, signal type, sample count, amplitude range, file size, SHA-256 checksum, and known anomalies.</p><p><br></p><p dir="ltr">5. Data Structure and Format</p><p>----------------------------</p><p dir="ltr">All time-series data are stored as tab-delimited text files (.txt) without headers. Each file is provided as a single-column vector with shape (N, 1).</p><p><br></p><p dir="ltr">Folder hierarchy:</p><p dir="ltr">[Fault type] / [Severity level] / [Operating mode] /</p><p><br></p><p dir="ltr">Examples:</p><p dir="ltr">- Normal/Normal/Stationary/Vib.txt</p><p dir="ltr">- Planet-ring fault/Line_0.75/Stationary/Vib.txt</p><p dir="ltr">- Sun fault/Line_0.5/Nonstationary/Encoder.txt</p><p><br></p><p dir="ltr">Files:</p><p dir="ltr">- Vib.txt</p><p dir="ltr"> Raw vibration signal in units of gravity (g)</p><p><br></p><p dir="ltr">- Encoder.txt</p><p dir="ltr"> Encoder pulse signal in volts (V), nominally transitioning between 0 and 5 V for rotational speed analysis</p><p><br></p><p dir="ltr">Each time-series file contains approximately 1.54 x 10^8 samples. Actual sample counts may vary slightly across files because the recordings include start/stop margins; the exact sample count of each file is listed in datasummary.csv.</p><p><br></p><p dir="ltr">6. Validation Code Package</p><p>--------------------------</p><p dir="ltr">The repository includes MATLAB Live Scripts and supporting functions for reproducing the technical validation figures in the associated Data Descriptor manuscript.</p><p><br></p><p dir="ltr">Main scripts:</p><p dir="ltr">- Data_region_extract.mlx</p><p dir="ltr"> Extracts 5-minute data segments from the original dataset.</p><p><br></p><p dir="ltr">- Figure567.mlx</p><p dir="ltr"> Reproduces Fig. 5, Fig. 6, and Fig. 7.</p><p><br></p><p dir="ltr">- Figure8.mlx</p><p dir="ltr"> Reproduces Fig. 8.</p><p><br></p><p dir="ltr">- Figure9.mlx</p><p dir="ltr"> Reproduces Fig. 9.</p><p><br></p><p dir="ltr">The validation scripts were developed and tested in MATLAB R2025b using the Signal Processing Toolbox. Detailed dependencies, folder structure, and execution instructions are provided in README_Figure_Reproduction.txt.</p><p><br></p><p dir="ltr">7. Citation</p><p>-----------</p><p dir="ltr">Users should cite this Figshare dataset when using the data. Citation information for the associated Data Descriptor manuscript will be updated after journal publication.</p><p><br></p><p dir="ltr">Related method reference:</p><p dir="ltr">Ha, J. M., Park, J., Na, K., Kim, Y. & Youn, B. D. Toothwise fault identification for a planetary gearbox based on a health data map. IEEE Transactions on Industrial Electronics 65, 5903–5912 (2017).</p>
2026-04-15T18:44:12Z
Dataset
Dataset
10.6084/m9.figshare.32025606.v5
https://figshare.com/articles/dataset/SNU_Planetary_Gearbox_Dataset/32025606
CC BY 4.0