High-speed data acquisition and computing for real-time active control of civil structures subject to seismic base excitation
High-speed data acquisition and computing for real-time active control of civil structures subject to seismic base excitation
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高速数据采集和计算，用于地震基础激励下土木结构的实时主动控制
DOI：
10.1117/12.2612570
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Peckens, Courtney A.
中科院分区：
文献类型：
--
作者：
Peckens, Courtney A.
民用基础设施响应地震或风等大型外部荷载的主动结构控制需要传感节点、计算节点和驱动节点之间的信息快速集成。因此，由于系统延迟和信息交换挑战等几个关键问题，它仍然没有得到广泛应用。在本研究中，Martlet 是一种高速数据采集和计算节点，基于德州仪器 piccolo 微控制器设计，能够进行点对点无线通信，用于主动控制过程中的所有三个步骤。为了快速传感，Martlet 配备了一个与位移传感器连接的接口板，并具有板载微分电路来导出速度。传感 Martlet 将其数据（即位移和速度）传输到致动 Martlet。驱动 Martlet 使用最优控制律（全状态线性二次调节器）计算必要的控制力。然后，产生的控制力通过控制器接口板传送到执行器。这个完整的过程在部分比例的四层剪力结构上进行了实验验证，结果表明，由于 Martlet 的快速处理速度，可以实现结构的实时控制。
Active structural control of civil infrastructure in response to large external loads, such as earthquake or wind, requires the rapid integration of information between sensing nodes, computational nodes, and actuating nodes. Because of this, it is still not widely employed due to several key issues, such as latency in the system and challenges with information exchange. In this study, the Martlet, a high-speed data acquisition and computing node that was designed based on a Texas instruments piccolo microcontroller and capable of peer-to-peer wireless communication, is used for all three steps in the active control process. For rapid sensing, the Martlet is equipped with an interface board that interfaces with a displacement transducer and has an on-board differentiating circuit to derive velocity. The sensing Martlet transmits its data (i.e., displacement and velocity) to the actuating Martlet. The actuating Martlet calculates the necessary control force using an optimal control law, the full-state linear quadratic regulator. The resulting control force is then conveyed to the actuator via a controller interface board. This complete process is experimentally validated on a partial-scale, four-story shear structure and it is demonstrated that due to the fast processing speeds of the Martlet, real-time control of the structure can be achieved.
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