Failure sign diagnosable drive device

Abstract

Provided is a drive device capable of diagnosing a failure sign, the drive device having functions of diagnosing the failure sign of a power device; performing load drive control by restricting operation of the power device with the failure sign or by excluding the power device; and suppressing shortening of a replacement cycle of the power device. A drive device 100 includes power devices 1a to 1f that drive a load, characteristic sensors 2a to 2f that detect characteristics of the power devices 1a to 1f, respectively, a sensing result holder 3 that holds detection results acquired by the characteristic sensors 2a to 2f in time series, control signal change units 4 and 5 that each detect a failure sign of each of the power devices 1a to 1f from the detection results in the sensing result holder 3 and output a control change signal, and a drive controller 10 that controls drive of the power devices 1a to 1f. When detecting the failure sign of each of the power devices 1a to 1f based on a control threshold to detect the failure sigh of each of the power devices 1a to 1f, the control signal change units 4 and 5 each output a control change signal 20 to the drive controller 10 to drive a load 200 using the power devices 1a to 1f excluding the power devices 1a to 1f detected.

Dependencies are inferred from the claim text.