• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Strategic Placement of Accelerometers to Measure Forces by the Sum of Weighted Accelerators
【24h】

Strategic Placement of Accelerometers to Measure Forces by the Sum of Weighted Accelerators

机译：利用加权加速器总和加速度计测量力的战略布局

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A force identification method using a sum of weighted accelerations (SWA) has recently been demonstrated. Accuracy of the SWA method depends on the number and placement of the accelerometers and the selection of the best set of weighting factors. Procedures have been proposed for determining the number of accelerometers required for a given frequency bandwidth and an experimental-analytical method has been derived to calculate the optimum set of weighting coefficients. A procedural method is described and demonstrated in this paper for determining the placement of gages using results from a free-body modal characterization. Our proposed procedure is to place accelerometers at the nodes of the highest free-body vibrational mode in the frequency bandwidth of interest. All modes below this mode are well represented in the acceleration measurements. The weighting factors can be determined by the previously reported methods or according to a theoretical method introduced in this paper. The present method satisfies the objective of ''zeroing-out'' the contribution of free-body vibration modes in the SWA method of force identification. We illustrate the theory through the analysis of a simple beam, and we then demonstrate the procedure with the laboratory testing of a softly suspended aluminum beam. (ERA citation 13:030847)

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