Research on measurement technology of lubricating film state based on displacement sensor of two-circle coaxial fiber

Basing on the displacement sensor of two-circle reflective coaxial fiber, this paper puts forward a new lubricating film thickness measurement method, and expounds its correlative technologies. Firstly, a displacement sensor of two-circle reflective coaxial fiber bundle for measuring thickness of slide bearings of rotating machinery is designed. Then, a measurement system of lubricating film based on the two-circle coaxial fiber displacement sensor is designed. At last, a new two-point measurement approach is brought forward. The result of the dynamic measurement indicates that two-point measurement approach is feasible.