Hydrodynamic bearing is one of important support parts for steam turbine in power plant; bearing fault is a direct threat to the normal operation of the turbo-generator unit. Hydrodynamic bearings operate in complex environment, the current lubrication monitoring methods have some limitations in on-time and accurate diagnose of bearing lubrication condition. Developing a technology used for on-time diagnosing of hydrodynamic bearings condition is an important measure to enhance the safety and economy of pow...