Experimental validation of a proposed bio-inspired control algorithm for civil infrastructure
Experimental validation of a proposed bio-inspired control algorithm for civil infrastructure
复制标题
所提出的民用基础设施仿生控制算法的实验验证
DOI：
10.1117/12.2582375
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
O'Donnell, Anne
中科院分区：
文献类型：
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作者：
Peckens, Courtney A.;Bleitz, Evan;O'Donnell, Anne
土木基础设施的结构控制，以响应大的外部负载，如地震或风，仍然没有得到广泛应用，由于几个关键问题，如系统中的延迟和信息交换的挑战。为了促进信息流，无线传感器网络已经成为一种潜在的解决方案，也是传统有线传感和驱动基础设施的低成本替代方案。然而，这些系统也引入了额外的挑战，例如无线通信信道中的延迟和各个感测节点处的计算淹没。可以从生物中枢神经系统的实时感测和致动能力中汲取灵感，以克服无线传感器节点所经历的这些挑战中的一些。开发了一种新型的生物启发的无线传感器节点，该节点能够对传感器信号进行实时时频分解，从而从某些神经元的频率选择性中汲取灵感。与神经元的功能类似，节点基于感知信号的内容使用异步采样，从而节省大量功率并压缩数据通信。在这项研究中，生物启发的无线传感器节点用于反馈控制应用，以克服目前在无线控制中看到的挑战。传感器节点能够将频率特定的数据实时传输到控制器节点，该控制器节点使用最少的计算资源来构建控制力。该研究验证了生物启发的无线反馈控制架构在一层局部尺度剪切结构上的性能，该剪切结构通过主动质量致动器被地震激励和控制。
Structural control of civil infrastructure in response to large external loads, such as earthquake or wind, is still not widely employed due to several key issues, such as latency in the system and challenges with information exchange. To promote information flow, wireless sensor networks have emerged as a potential solution that is also a low-cost alternative to the traditional wired sensing and actuation infrastructure. However, these systems also introduce additional challenges such as latency in the wireless communication channel and computational inundation at individual sensing nodes. Inspiration can be drawn from the real-time sensing and actuation capabilities of the biological central nervous system to overcome some of these challenges experienced by wireless sensor nodes. A novel bio-inspired wireless sensor node was developed that is capable of real-time time-frequency decomposition of a sensor signal, thus drawing inspiration from the frequency selectivity of certain neurons. Similar to the functionality of neurons, the node uses asynchronous sampling based on the content of the perceived signal, resulting in large power savings and compressed data communication. In this study, the bio-inspired wireless sensor node is utilized for a feedback control application in order to overcome the challenges currently seen in wireless control. The sensor node is able to transmit frequency- specific data in real-time to a controller node which constructs a control force using minimal computational resources. This study validates that performance of the bio-inspired wireless feedback control architecture on a one-story partial- scale shear structure that is seismically excited and controlled via active mass actuators.