Bearing in axle box is one of the key rotation components in the high-speed train. Extraction of bearing vibration characteristics, state assessment and health monitoring the internal bearing structure are the development directions of bearing state health monitoring technology in high-speed train. Due to limitation of resonance demodulation method, a classical method of bearing health diagnosis, a new self-adaptive demodulation method is proposed, and the validity of the new method is verified by bearing vibration bench test.
doi: 10.12783/SHM2015/264