Bearing Damage Detection in Speed-sensorless Operated Multi-Mass-Systems

摘要

The present paper deals with the diagnosis of outer-race bearing faults in a speed-sensorless operatedrndrive. Frequency response measurement of the mechanical two-mass-system serves as instrumentrnfor the detection of the bearing failure. Deterministic deviations from the measured curve without failurernpoint out the presence of an outer race bearing fault even when calculated with the estimatedrnspeed from a speed-adaptive Luenberger observer structure in sensorless operation.