Vibration Control of Tall Buildings Using Electricity Generating Tuned Mass Dampers

研究的目的是开发一种结构控制方法，以有效地减轻高层建筑等大型结构的风致振动，同时在公用事业规模上高效地获取能量。高层建筑和细长的塔楼容易受到动态风荷载的影响，可能会经历很大的振动。目前，为了减少建筑物中的这些振动，一种流行的方法是利用顶部的大质量作为调谐质量阻尼器，该阻尼器在自身运动中吸收一些能量，并将其余的作为余热在阻尼器中消散。在这个项目中，一种独特的方法将通过使用一系列优化配置的发电调谐质量阻尼器将耗散的振动能量转换为电能来提供增强的结构反应抑制。为了优化阻尼器在能量收集和结构控制方面的性能，该项目将对带有调谐质量阻尼器的结构的动力学和能量分析进行全面的研究，将设计高效的电磁能量换能器来收集和连接到建筑物或结构的电网，并将开发一个完整的半主动自供电振动控制系统。该项目将制定新的建模和仿真方法，以分析暴露在风荷载下的电气、调谐质量阻尼器和结构系统的综合动力学。交付成果包括开发经实验验证的双功能振动控制和能量收集的创新框架，包括能量收集和电网连接所需的硬件，以及操作调谐质量阻尼器所需的控制算法。这项研究是多学科的，因为它融合了结构、机械、电力系统和电气工程的概念，以设计一个优化的系统来控制结构，以提高它们的安全性和可靠性，并利用能量收集来增强结构设计的可持续性。项目成果将通过课程开发、本科生参与项目研究、研究生高级培训和高中生暑期实习拓展活动，整合到石溪大学新推出的土木工程、能源技术和机电一体化项目中。

The objective of the research is to develop a structural control approach to effectively mitigate the wind-induced vibrations of large structures like high-rise buildings and at the same time efficiently harvest energy at the utility scale. Tall buildings and slender towers, being susceptible to dynamic wind load effects, can experience large vibrations. Currently, to reduce these vibrations in a building, a popular approach is to utilize a large mass at the top as a tuned mass damper which absorbs some energy in its own motion and dissipates the rest as wasted heat in a damper. In this project, a unique approach will be utilized to provide enhanced structural response suppression by converting the dissipated vibration energy into electricity by using a series of optimally configured electricity-generating tuned mass dampers. To optimize the performance of the dampers in energy harvesting and structural control, the project will conduct a comprehensive study of the dynamics and energy analysis of structures with tuned mass dampers, will design efficient electromagnetic energy transducers for harvesting and connecting to the building's or structure's power grid, and will develop a complete semi-active self-powered vibration control system. The project will formulate new modeling and simulation approaches to analyze the integrated dynamics of the electrical, tuned mass damper and structural systems exposed to wind loads. Deliverables include the development of an experimentally demonstrated innovative framework for dual-function vibration control and energy harvesting, including the hardware required for energy harvesting and grid connection as well as the control algorithms required to operate the tuned mass dampers. The research is multi-disciplinary as it blends concepts of structural, mechanical, power system, and electrical engineering for designing an optimal system for controlling structures to enhance their safety and reliability and, for energy harvesting to enhance sustainability in structural designs. The project results will be integrated in the newly launched Civil Engineering, Energy Technologies, and Mechatronics programs at Stony Brook University through course development, involvement of undergraduate students in project research, advanced training of graduate students, and summer internship out-reach activities for high-school students.