Robust Nonlinear Decentralized Control of Cable Supported Bridge Structures

9301464赫里德计划对土木工程结构，特别是缆索支承的桥梁结构进行主动控制。该控制算法包含了结构模型中可能存在的非线性和不确定性。控制战略将以分散的方式实施。为结构的子系统产生控制力，并从结构的子系统获得传感器信息。采用非线性分散控制策略，对几个索承桥梁结构在自由振动、简谐振动和地震激励下进行了分析研究。由于桥面和支撑缆索可能有较大的运动，结构非线性预计主要是几何非线性。将确定失控和受控响应。将采用迭代方案来确定最佳传感器位置。将进行实验研究以验证所提出的方法，并将其与分析模拟进行比较。***

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. ***