噪声与振动控制2015，Vol.35Issue(6)：202-206,5.DOI:10.3969/j.issn.1006-1335.2015.06.043
通过PVDF阵列测量阶梯梁体积位移的实验
Experimental Research on Measuring the Volume Displacement of Stepped Beams by Using PVDF Arrays
摘要
Abstract
With a clamped stepped beam as an example, the experiment method for measurement of the volume displacement using PVDF (Polyvinylidene fluoride) arrays was studied. The arrays of PVDF films with the same rectangular segments were uniformly attached to the surface of the stepped beam as sensors. The frequency response functions between the excitation force and the output signals of the PVDF arrays were measured. The output signals of the PVDF arrays were multiplied by appropriate weights which were designed by the combination of the pseudo-inverse method with the truncated singular value decomposition (TSVD) method to gain the volume displacement of the stepped beam. Experimental results show that using the PVDF array designed by this method can accurately measure the volume displacement. This method has the advantages that it does not need the structural modal information, the additional mass of the array is negligible and it is independent of the excitation locations.关键词
振动与波/阶梯梁/PVDF/TSVD法/伪逆方法/频率响应函数Key words
vibration and wave/stepped beam/PVDF (Polyvinylidene fluoride)/TSVD method/pseudo-inverse method/frequency response functions分类
信息技术与安全科学引用本文复制引用
钟海彬,毛崎波..通过PVDF阵列测量阶梯梁体积位移的实验[J].噪声与振动控制,2015,35(6):202-206,5.基金项目
国家自然科学基金资助项目(51265037、11464031) （51265037、11464031）
江西省高等学校科技落地项目(KJLD12075) （KJLD12075）
江西省教育厅科技项目(GJJ13524) （GJJ13524）
