<p dir="ltr"><b>Test‑rig & acquisition</b></p><p dir="ltr">A two‑stage spur‑gear reducer was instrumented in the Dynamic Systems & Control Laboratory at the University of Connecticut.</p><p><br></p><ul><li>Stage 1: 32‑tooth pinion ↔ 80‑tooth gear</li><li>Stage 2: 48‑tooth pinion ↔ 64‑tooth gearA 3‑axis PCB accelerometer was mounted on the housing; signals were sampled at <b>20 kHz</b> through a dSPACE DS1006 board while the shaft ran under constant torque supplied by an adjustable magnetic brake. Shaft speed was logged with a tachometer and used to perform <b>Time‑Synchronous Averaging (TSA)</b> so every record starts at the same angular position, eliminating speed wander.</li></ul><p dir="ltr"><b>File structure</b></p><p dir="ltr">UConn_Gearbox.csv is a plain UTF‑8 CSV with:</p><p><br></p><ul><li><b>3600 rows</b> – vibration samples per record (≈ 0.18 s at 20 kHz)</li><li><b>936 columns</b> – individual TSA‑aligned records</li><li><ul><li>columns 1‑104 → class H</li><li>columns 105‑208 → class MT</li><li>columns 209‑312 → class RC</li><li>columns 313‑416 → class SP</li><li>columns 417‑520 → class CH5</li><li>columns 521‑624 → class CH4</li><li>columns 625‑728 → class CH3</li><li>columns 729‑832 → class CH2</li><li>columns 833‑936 → class CH1</li></ul></li></ul><p><br></p>
