• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on industrial and commercial applications of smart structures technologies; 20090309-10; San Diego, CA(US) >Miniature Piezoelectric Shaker Mechanism for Autonomous Distribution of Unconsolidated Sample to Instrument Cells
【24h】

Miniature Piezoelectric Shaker Mechanism for Autonomous Distribution of Unconsolidated Sample to Instrument Cells

机译：微型压电振动器机制，可将未合并样品自动分配到仪器单元

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To perform in-situ measurements on Mars or other planetary bodies many instruments require powder produced using some sampling technique (drilling/coring) or sample processing technique (core crushing) to be placed in measurement cells. This usually requires filling a small sample cell using an inlet funnel. In order to minimize cross contamination with future samples and ensure the sample is transferred from the funnel to the test cell with minimal residual powder the funnel is shaken. The shaking assists gravity by fluidizing the powder and restoring flow of the material. In order to counter cross contamination or potential clogging due to settling during autonomous handling a piezoelectric shaking mechanism was designed for the deposition of sample fines in instrument inlet funnels. This device was designed to be lightweight, consume low power and demonstrated to be a resilient solid state actuator that can be mechanically and electrically tuned to shake the inlet funnel. In the final design configuration tested under nominal Mars Ambient conditions the funnel mechanism is driven by three symmetrically mounted piezoelectric flexure actuators that are out of the funnel support load path. The frequency of the actuation can be electrically controlled and monitored and mechanically tuned by the addition of tuning mass on the free end of the actuator. Unlike conventional electromagnetic motors these devices are solid state and can be designed with no macroscopically moving parts. This paper will discuss the design and testing results of these shaking mechanisms.
机译：为了在火星或其他行星体上进行原位测量，许多仪器要求将使用某种采样技术（钻孔/取芯）或样品处理技术（岩心破碎）产生的粉末放入测量室中。这通常需要使用入口漏斗填充一个小的样品池。为了最大程度地减少与未来样品的交叉污染，并确保将样品从漏斗转移到测试室，同时残留的粉末最少，请摇动漏斗。摇动通过使粉末流化并恢复材料的流动来辅助重力。为了抵抗在自动操作过程中由于沉降而产生的交叉污染或潜在的堵塞，设计了一种压电振动机构，用于将样品细粉沉积在仪器的进气漏斗中。该设备设计轻巧，功耗低，并被证明是一种弹性的固态致动器，可以对其进行机械和电气调整，以摇动进口漏斗。在标称的Mars Ambient条件下测试的最终设计配置中，漏斗机构由三个对称安装的压电挠曲执行器驱动，该执行器位于漏斗支撑负载路径之外。可以通过在执行器的自由端上增加调谐质量来对控制频率进行电气控制和监视，并进行机械调谐。与传统的电磁电机不同，这些设备是固态的，可以设计成没有宏观运动的部件。本文将讨论这些振动机制的设计和测试结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号