Study of Algorithms for Stabilizing the Constant Component of the Output Signal of the Measuring Circuit with a Single-coil Eddy Current Sensitive Element in the Systems for Debris Monitoring of Friction Pairs of Power Plants

The article proposes two algorithmic methods for stabilizing the constant component of the output signal of the measuring circuit with single-coil sensitive elements which are used in sensors for monitoring the metal wear particles in the power plants' lubrication systems. The first algorithm is based on the statistical processing of digital codes obtained as a result of analog-to-digital conversion of voltages at the output of the measuring circuit. The second algorithm involves the implementation of the simplest digital FIR filter “moving average”. The efficiency of the algorithms is investigated, and the limits of their applicability are defined. The choice of the “moving average” algorithm as an optimal according to the criteria of accuracy and performance for the correction of the constant component of the signal on the MC outputs in the system for debris monitoring is substantiated.