FAULT DIAGNOSIS SYSTEM OF COOLING FAN, FAULT DIAGNOSIS DEVICE, FAULT DIAGNOSIS METHOD, FAULT DIAGNOSIS PROGRAM, AND COOLING DEVICE

摘要

PROBLEM TO BE SOLVED: To surely detect a fault of a cooling fan having a redundant configuration which may bring about a simultaneous rotation phenomenon.;SOLUTION: A fault diagnosis system of the cooling fan includes a first cooling device having a first cooling fan, a second cooling device having a second cooling fan, and a controller which performs the first fault diagnosis of diagnosing a fault of the second cooling fan on the basis of a rotation velocity of the second cooling fan at the time of reduction in the rotation velocity of the first cooling fan.;COPYRIGHT: (C)2010,JPO&INPIT