...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fortschritte der Physik >Vision-Based Measurement System for Instantaneous Rotational Speed Monitoring Using Linearly Varying-Density Fringe Pattern
【24h】

Vision-Based Measurement System for Instantaneous Rotational Speed Monitoring Using Linearly Varying-Density Fringe Pattern

机译：基于视觉的测量系统，用于使用线性变化密度条纹图案的瞬时转速监测

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

The instantaneous rotational speed (IRS) of a rotating machine is key information to understand the machine operation and diagnose the potential faults. A novel nonprojection fringe vision-based system was proposed to realize the measurement of IRS, which was simply composed of an artificial linearly varying-density fringe pattern (LVD-FP) as a sensor and a high-speed camera as a detector. The designed LVD-FP, printed by a normal printer, was pasted around the surface of the rotary shaft completely along the fringe density change direction. Part of the LVD-FP was captured by the high-speed camera. The fringe period density of each imaged LVD-FP intensity changed due to the rotation of the shaft, from which the rotational angle could be obtained. Subsequently, both the instantaneous angular speed (IAS) between two adjacent frames and the IRS could be accurately and efficiently obtained. The influences of the key parameters of the proposed system on the measurement accuracy were investigated by simulations and experiments. Both the simulation and experimental results demonstrated that the proposed system can accurately measure the IAS and correctly track the wide range IRS with the advantage of noncontact and cost effective. In addition, the rotation direction of the shaft could be directly obtained from the sign of the IRS curves. Therefore, the proposed system could provide a novel vision-based approach for IRS measurement, especially when the conventional speed sensor cannot be installed on the rotary shaft. The good performance of the system in IRS measurement makes it attractive for fault diagnosis of rotating machinery.
机译：旋转机器的瞬时转速（IRS）是了解机器操作并诊断潜在故障的关键信息。提出了一种新的非分解条纹视觉系统，以实现IRS的测量，其简单地由作为传感器的人工线性变化的密度条纹图案（LVD-FP）和作为检测器的高速相机组成。由正常打印机印刷的设计的LVD-FP完全沿着条纹密度变化方向粘贴旋转轴的表面周围。 LVD-FP的一部分由高速相机捕获。由于轴的旋转，每个成像的LVD-FP强度的边缘周期密度改变，从该旋转可以获得旋转角度。随后，可以精确且有效地获得两个相邻帧和IRS之间的瞬时角速度（IAS）。通过模拟和实验研究了所提出的系统关键参数对测量精度的影响。仿真和实验结果都表明，所提出的系统可以准确测量IAS并正确跟踪广泛的IRS，具有非接触和成本效益的优势。另外，轴的旋转方向可以从IRS曲线的符号直接获得。因此，所提出的系统可以提供一种基于目的的基于视觉的IRS测量方法，特别是当传统速度传感器不能安装在旋转轴上时。系统在IRS测量中的良好性能使其对旋转机械的故障诊断具有吸引力。

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