| 摘要 |
An actuator ( 20 ) includes an attachment arrangement ( 30 ) for attachment to an item to be driven, such as a pile ( 12 ) and a vibrator arrangement using a vibrator ( 32 ) and plate ( 34 ). A suspension arrangement ( 38 ) is provided by which the attachment arrangement ( 30 ) can be supported on a carriage ( 36 ). The attachment arrangement ( 30 ) isolates the carriage ( 36 ) from vibration created by the vibrator ( 32 ) and the isolation characteristics are tunable.
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