Vibration and Shape Control in Opto-mechanical Systems Using Distributed Fiber-optic Bragg Grating Sensors
Vibration and Shape Control in Opto-mechanical Systems Using Distributed Fiber-optic Bragg Grating Sensors
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DOI：
10.1177/1077546309106148
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发表时间：
2010-04-01
影响因子：
2.8
通讯作者：
Koch, Alexander W.
中科院分区：
文献类型：
--
作者：
Mueller, Uwe C.;Baier, Horst;Koch, Alexander W.
高精度光机械系统的特点是结构动力学和光学之间的相互作用。研究了用于此类结构振动和形状控制的新型传感技术。由于所需传感器的数量和对精度的要求，光纤布拉格光栅（FBG）传感器可能是这项任务的一个有吸引力的选择。它们可以同时测量结构中许多位置的应变。许多光纤光栅传感器系统提供高精度，但其延迟时间和最大采集频率使其难以用于振动控制目的。因此，我们开发了一种新型的多通道光纤光栅传感器系统，该系统使用位置敏感探测器进行波长探测，其延迟时间比基于电荷耦合器件的系统要小得多，理论最大带宽超过300 kHz。该系统在实验测试台上进行了高精度的低频形状控制静态应变测量(
High-precision opto-mechanical systems are characterized by significant interactions between structural dynamics and optics. Novel sensing techniques for the vibration and shape control of such structures are investigated. Owing to the number of necessary sensors and the required precision, fiber-optic Bragg grating (FBG) sensors could be an attractive option for this task. They allow the simultaneous measurement of strain at many locations in a structure. Many FBG sensor systems provide high precision, but their delay time and maximum acquisition frequency makes them difficult to use for vibration control purposes. Therefore, a novel multi-channel FBG sensor system was developed using a position sensitive detector for the wavelength interrogation which has much less delay time than a charge coupled device-based system and a theoretical maximum bandwidth of over 300 kHz. This system was tested for high-precision static strain measurements for shape control applications at low frequencies in an experimental test rig (