HEALTH MONITORING FOR A LINE REPLACEABLE UNIT (LRU)

摘要

A BCU for determining a health status of a LRU having a coil includes a non-transitory memory configured to store instructions and a controller coupled to the non-transitory memory. The controller is designed to receive a temperature from a temperature sensor, to receive a direct current (DC) voltage that is applied to the coil of the LRU, and to receive a detected current corresponding to an amount of current flowing through the coil. The controller is further designed to determine a calculated resistance of the coil based on the detected current and the DC voltage and to determine a compensated resistance of the coil based on the temperature and the calculated resistance of the coil. The controller is further designed to determine the health status of the LRU by comparing the compensated resistance of the coil to a nominal resistance of the coil.