Structure Optimal Design and Performance Test of Airfoil Shear Probes
Structure Optimal Design and Performance Test of Airfoil Shear Probes
复制标题
翼型剪切探头结构优化设计及性能测试
DOI：
10.1109/jsen.2014.2336853
复制
发表时间：
2015-01-01
影响因子：
4.3
通讯作者：
Wang, Shuxin
中科院分区：
文献类型：
--
作者：
Wang, Yanhui;Xu, Tianyu;Wang, Shuxin
翼型剪切探针是用于测量海洋湍流动能耗散率的仪器。悬臂梁和压电陶瓷片是剪切探头的核心部件。前者是力传递单元，其放大作用在探针尖端上的剪切力。后者是将力转换为电荷的压电换能元件。悬臂梁和压电陶瓷片作为剪切速度测量的附属元件，对传感器的性能有着重要的影响。优化悬臂梁和压电陶瓷片的尺寸可以提高剪切探针的测量性能，如灵敏度和谐振频率。本文采用多目标优化算法，获得了具有合适灵敏度和共振频率的剪切探头的主要设计参数。进行了一系列测试，包括敲击测试和校准测试，以检查在湿模式下的谐振频率，并分析探头的灵敏度，分别。不久之后，海上试验在西太平洋进行。从剪切速度数据的功率谱显示出良好的协议与Nasmyth频谱。实验也验证了剪切探头优化设计方法的有效性。
Airfoil shear probes are instruments used to measure the turbulent kinetic energy dissipation rate in the ocean. The cantilever beams and piezoelectric ceramics sheets are core components of shear probes. The former is the force transferring unit that amplifies the shear force acting on the probe tip. The latter is the piezoelectric transduction element that transforms force to electrical charges. As obbligato components for shear velocity measurement, both the cantilever beam and piezoelectric ceramics sheet have significant influence on the performances of the sensor. Optimizing the dimensions of the cantilever beam and the piezoelectric ceramics sheet could improve the measuring performance of the shear probe, such as sensitivity and resonance frequency. In this paper, multiobjective optimization algorithm is used to obtain the main design parameters of the shear probe with appropriate sensitivity and resonance frequency. Serial tests are conducted including the tap test and the calibration test to examine the resonance frequency in wet mode, and analyze the sensitivity of the probe, respectively. Soon afterward, the sea trials were carried out in the Western Pacific Ocean. The power spectrum from shear velocity data shows a good agreement with the Nasmyth spectrum. The experiments also testify the validity of the optimal design method of the shear probe.