Robust Nonlinear Decentralized Control of Cable Supported Bridge Structures

缆索支撑桥梁结构的鲁棒非线性分散控制

• 批准号: 9301464
• 负责人: Mario Magana
• 金额: $ 20.49万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-15 至 1997-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9301464&HistoricalAwards=false
• 关键词: Robust; Nonlinear; Decentralized; Control; Cable

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. ***

9301464 Hernried 计划制定土木工程结构主动控制策略，特别是缆索支撑桥梁结构。 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结构的子系统获得传感器信息。 将使用非线性分散控制策略对几个受到自由振动、谐波和地震激励的示例索支撑桥梁结构进行分析研究。 由于桥面和支撑缆索可能存在较大运动，预计结构非线性主要是几何非线性。 将确定不受控和受控响应。 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，并将作为与分析模拟的比较。 ***