| 摘要 |
A method and an arrangement for dampening vibration in a mast structure of a mast truck where the critical characteristics of the mast structure and/or of the vibration are measured, computed, measured and computed or at least some of the characteristics are fed to the computing system in advance, the lowest natural frequency (omegan) of the mast structure and/or the phase of the vibration is computed from the collected data or determined directly from the mast structure, the order for movement is obtained from driver or master system, the critical characteristics are fed to the computing system, the movement guidance to the speed controller is generated from above mentioned characteristics of the vibration, the order for movement is divided at least two parts (impulses I), and the actuator is controlled with speed controller for moving the truck or load in the truck according to the order for movement.
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