US 12,680,906 B2Granted

Vibration test device with diagnosis unit

AssigneeImv Corporation

InventorsMutsuhito Sudo, Yasuhiro Uchiyama, Katsuhiko Nakamura

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Abstract

There is provided a vibration test device capable of accurately performing self-diagnosis related to the state of the vibration test device, including a failure determination, a failure prediction, and a performance limit determination of the vibration test device. A vibration test device 200 including a shaker 100 configured to shake a shaker table 48, includes: a drive controller 120 configured to control drive of the shaker 100 by controlling current and voltage applied to the shaker 100; a current detector 171 configured to detect the current that controls vibration of the shaker 100; a voltage detector 172 configured to detect the voltage that controls vibration of the shaker 100; a motion detector 135 configured to detect physical quantities related to a motion of the shaker table 48; and a determiner 134 configured to perform a determination related to a state of the vibration test device 200, including a failure determination, a failure prediction, and a performance limit determination, based on detection signals from the current detector 171, the voltage detector 172, and the motion detector 135.

Claims17

Dependent claims

A vibration test device including a shaker configured to shake a shaker table, the vibration test device comprising:

a drive controller configured to control drive of the shaker by controlling current and voltage applied to the shaker;
a current detector configured to detect the current that controls vibration of the shaker;
a voltage detector configured to detect the voltage that controls vibration of the shaker;
a motion detector configured to detect physical quantities related to a motion of the shaker table;
a determiner configured to perform determination related to a state of the vibration test device, including a failure determination, a failure prediction, and a performance limit determination, based on detection signals output from the current detector, the voltage detector, and the motion detector, and
a motion calculation unit configured to calculate physical quantities related to a six degrees-of-freedom (6DoF) motion of the shaker table, based on the detection signal output from the motion detector, wherein
the determiner determines the state of the vibration test device, taking into account the physical quantities of the 6DoF motion calculated by the motion calculation unit.

4 more elements

Dependencies are inferred from the claim text.