07 - Systems, Subsystems and Equipment
HIGH-PRECISION EDDY-CURRENT TIP CLEARANCE SENSOR WITHEXCEPTIONALHEAT RESISTANCE
F.L. Liu¹, L.Q. Zhao¹, Y.G. Lyu¹, B.S. Chang¹, Z.X. Liu¹; ¹Northwestern Polytechnical University, China
Eddy current sensors, owing to their excellent interference resistance and unique non-contact measurement characteristics, have found increasingly widespread application in the field of dynamic tip clearance measurement for turbine blades. However, temperature fluctuations within the engine can cause drift in the sensor's output characteristics, thereby affecting measurement accuracy. This paper details the development of a high-temperature-resistant eddy current sensor, and an in-depth study was conducted on the impact of temperature on its output characteristics, designs a measurement circuit incorporating temperature compensation functionality, and completes prototype fabrication and testing.
DOI: 10.71945/icas2026_0483