Improving the Position and Vibration Control of Multi-Body Structures Under External Disturbances
Improving the Position and Vibration Control of Multi-Body Structures Under External Disturbances
复制标题
改善外部干扰下多体结构的位置和振动控制
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
D. Tilley
中科院分区：
文献类型：
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作者：
D. Branson;P. Keogh;D. Tilley
已经为实验性多体测试结构开发了基于 H 无穷大的控制器，以减少柔性梁组件的振动，同时保持刚性组件的精确位置控制。当柔性梁脱离橡胶端部止动件时，控制器可以有效地减弱柔性梁的振动。然而，它在衰减由外部负载或由于与终点止动件接触引起的振动方面并不那么有效。本文论证了在这些条件下与控制器设计相关的权重函数的变化的影响。尽管权重函数的改变可能会导致柔性部件的阻尼更大，但这可能会导致刚性部件的位置控制精度降低。
An H infinity based controller has been developed for an experimental multi-body test structure to reduce vibration in the flexible beam components, while maintaining accurate position control of the rigid components. The controller was effective at attenuating vibration in the flexible beam when it lifts off of a rubber end stop. However, it was not as effective in attenuating vibration caused by external loadings, or due to contact with the end stop. This paper dem-onstrates the effects of changes to the weighting functions associated with the controller design under these conditions. Although changes to the weighting functions can result in greater damp-ing of the flexible components, this could result in less accurate position control of the rigid components.