CAJ | 학술논문

为了验证薄膜振动模式的有效性，采用正弦条纹投影和傅里叶条纹分析的方法进行薄膜振动模式分析和振幅重建，并进行了理论分析和实验研究。在基于结构光的主动3维传感技术中，傅里叶变换轮廓术具有单帧获取、高分辨率、全场可实时测量等优势，成为可测量动态3维面形的一种实用方法。正弦光栅条纹被投影到振动中的薄膜表面，采用低帧频的CCD相机采集由薄膜振动导致条纹局部模糊的一系列变形条纹图。通过傅里叶变换轮廓术方法进行处理，最终得到不同频率下实际测量的薄膜振动模式结果。给出了理论计算结果与实测结果的验证比较。结果表明，该方法测量的振动模式结果准确反映了薄膜振动情况。3维面形测量结果和实验验证了该方法的可行性。
위료험증박막진동모식적유효성，채용정현조문투영화부리협조문분석적방법진행박막진동모식분석화진폭중건，병진행료이론분석화실험연구。재기우결구광적주동3유전감기술중，부리협변환륜곽술구유단정획취、고분변솔、전장가실시측량등우세，성위가측량동태3유면형적일충실용방법。정현광책조문피투영도진동중적박막표면，채용저정빈적CCD상궤채집유박막진동도치조문국부모호적일계렬변형조문도。통과부리협변환륜곽술방법진행처리，최종득도불동빈솔하실제측량적박막진동모식결과。급출료이론계산결과여실측결과적험증비교。결과표명，해방법측량적진동모식결과준학반영료박막진동정황。3유면형측량결과화실험험증료해방법적가행성。
In order to verify membrane vibration modes , sinusoidal fringe projecting and Fourier fringe analysis were used in membrane vibration mode analysis and amplitude reconstruction .After theoretical analysis and experimental verification, among 3-D automatic sensor technologies based on structured light , Fourier transform profilometry (FTP) with the advantages of single-frame capture, high resolution and real-time measurement became the practical method in dynamic three-dimensional shape measurement .A sequence of the deformed and partly blurred sinusoidal fringe images on the surface of a vibrating membrane was grabbed by a low sampling rate CCD camera .By FTP, the actual experimental results of membrane vibration modes at different frequencies were obtained .The theoretical vibration results and the vibration measurement results were compared .The results show that the vibration modes reflect the vibrating membrane accurately . The results of 3-D surface shape measurement and actual experiments give the verification of its validity .