...Meng Zhang Purpose This study aims to propose a method for monitoring bearing health in the time–frequency domain, termed the Lock-in spectrum, to track the evolution of bearing faults over time and frequency. Design/methodology/approach The Lock-in spectrum uses vibration signals captured...

... Group Publishing Limited 2014 Bearing Machine tools Spindle Thermoelectric generation Wireless sensor Wireless sensors, engineered as miniaturized, low-cost embedded devices with integrated sensing, processing, and radio communication capabilities, have recently gained substantial...