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首页> 外文会议>International Symposium on Stability Control of Rotating Machinery(ISCORMA-4); 20070827-31; Calgary(CA) >THE CONTROL OF BEARING STlFFNESS USING SHAPE MEMORY
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THE CONTROL OF BEARING STlFFNESS USING SHAPE MEMORY

机译：使用形状记忆控制轴承的刚度

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摘要

The problem addressed in this paper is the control of the effective stiffness of a bearing pedestal by means of a series of shape memory alloy wires. The bearing is mounted on elastomer O-rings whose preload (and hence stiffness) is controlled by a set of shape memory wires. In the first part of the paper a discussion of the rig design is given together with the predictive calculations of performance. These predictions are then compared with measurement taken from the rig. Steady state and transient solutions are examined in order to ascertain the likely requirements in terms of heating and cooling rates. Having established the viability of this technology, options for extending the design to control stiffness in both orthogonal directions are discussed together with an assessment of the future problems and potential benefits of extending this study.
机译：本文解决的问题是通过一系列形状记忆合金线控制轴承座的有效刚度。轴承安装在弹性体O形圈上，其预紧力（以及因此的刚度）由一组形状记忆线控制。在本文的第一部分中，对钻机设计进行了讨论，并进行了性能预测计算。然后将这些预测与从钻机获得的测量值进行比较。检查稳态和瞬态解决方案，以确定在加热和冷却速率方面可能的要求。建立了该技术的可行性之后，将讨论扩展设计以控制两个正交方向上的刚度的选项，并评估未来的问题以及扩展此研究的潜在好处。

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