| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration tester reducing a failure of a bearing by moving a neutral position of a vibration table during testing.SOLUTION: A control device 50 includes a transfer function correction part 51 and a waveform adjustment part 52, and executes excitation control of a vibration table. The waveform adjustment part 52 executes adjustment of a waveform set as an adjusted target waveform which sets an actual vibration waveform r1 as a control target of the excitation control of the vibration table, the actual vibration waveform r1 being an acceleration waveform such as an actual earthquake wave input as a target waveform desired to be reproduced by this vibration tester as an adjusted target waveform to be a control target of the excitation control of the vibration table. In the waveform adjustment part 52, the using of a target waveform r2 adding a superposed waveform to the actual vibration waveform r1 input as an acceleration waveform allows a neutral position to move to a position different from the designed neutral position, and enables a ball in the bearing to make at least one turn relative to a track plane. |
