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首页> 外文期刊>International journal of structural stability and dynamics >EXPLOITING DELAYED NONLINEAR FEEDBACK FOR SENSING BASED ON BIFURCATION MORPHING
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EXPLOITING DELAYED NONLINEAR FEEDBACK FOR SENSING BASED ON BIFURCATION MORPHING

机译：基于分叉变形的延迟非线性反馈检测

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摘要

Bifurcation morphing created by means of nonlinear feedback excitation is a vibration-based method for sensing. In this work, several new studies are presented to connect previously demonstrated theory to increasingly more practical applications. In particular, in the process of designing nonlinear feedback auxiliary signals, time delays in the circuitry are unavoidable. Advantages as well as possible side effects and disadvantages of time delays are discussed. Furthermore, additional time delay is considered as a new design parameter. Increasing the time delay has advantages such as enhanced robustness and sensitivity, which are demonstrated computationally. Moreover, calibration using multiple sensor locations is discussed. A clamped free cantilever beam structure is modeled and used for computational validation. The beam model resembles cantilever-based resonant sensor systems. Thus, potential applications of the new algorithm are discussed and the results stress the importance of nonlinear features for enhancing sensing performance in mechanical sensors without structural modifications.
机译：通过非线性反馈激励产生的分叉变形是一种基于振动的传感方法。在这项工作中，提出了一些新的研究，以将先前证明的理论与越来越多的实际应用联系起来。特别地，在设计非线性反馈辅助信号的过程中，电路中的时间延迟是不可避免的。讨论了时间延迟的优点以及可能的副作用和缺点。此外，额外的时间延迟被视为新的设计参数。时间延迟的增加具有诸如增强的鲁棒性和灵敏度的优点，这在计算上得到了证明。此外，讨论了使用多个传感器位置的校准。对夹紧的自由悬臂梁结构进行建模，并用于计算验证。光束模型类似于基于悬臂的共振传感器系统。因此，讨论了新算法的潜在应用，并且结果强调了非线性特征对于增强机械传感器中的传感性能而无需进行结构修改的重要性。

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