Robust Nonlinear Decentralized Control of Cable Supported Bridge Structures

[301464] Hernried提出了一种主动控制土木工程结构，特别是索桥结构的策略。该控制算法考虑了结构模型中可能存在的非线性和不确定性。控制策略将以分散的方式实施。为结构的子系统生成控制力并从子系统获得传感器信息。本文将采用非线性分散控制策略，对几个受自由振动、谐波和地震激励的索桥结构进行分析研究。由于桥面和支撑索可能有较大的运动，预计结构非线性主要是几何的。不受控制和受控制的反应都将被确定。将采用迭代方案来确定传感器的最佳位置。将进行实验研究以验证所提出的方法，并将作为与分析模拟的比较。* * *

9301464 Hernried A strategy for the active control of civil engineering structures, particularly cable supported bridge structures, is planned. The control algorithm incorporates nonlinearities and uncertainties that may exist in the structural model. The control strategy is to be implemented in a decentralized manner. Control forces are generated for and sensor information obtained from subsystems of the structure. Analytical studies will be performed using the nonlinear decentralized control strategy on several example cable supported bridge structures subjected to free vibration, harmonic, and earthquake excitation. Structural nonlinearities are expected to be primarily geometric due to the possibly large motions of the bridge deck and supporting cables. Both the uncontrolled and controlled response will be determined. An iterative scheme will be employed to determine optimum sensor locations. Experimental studies will be performed to verify the proposed methodology and will serve as a comparison to the analytical simulations. ***