Structure Optimization of Inductance Capacitance Composite Lubricating Oil Debris Sensor for Aeroengine
The large debris produced by abnormal wear contain information about the health status of aeroengines.In order to overcome the limitation of single inductance or capacitance sensor to detect the type of debris,a composite sensor based on three-coil inductance and interfinger type capacitance built in pipeline was proposed.The sensor can improve the measurement sensitivity and anti-interference ability by dividing the sensitive field and using the differential structure.Based on multi-physics simulation software,the control variable method was used to optimize the structural parameters of the sensor.Through the simulation analysis of the output characteristics,it is shown that the sensor can detect 60 μm ferromagnetic metal debris,222 μm non-ferromagnetic metal debris and 268 μm non-metallic debris when the inner and outer diameters are 6mm and 10mm respectively,and can effectively distinguish the size and material of the debris.
lubricating oil debristype of debriscomposite sensormulti-physics simulationcontrol variate method
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