执行饱和约束下的建筑物主动减震方法

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中图分类号：TU18 文献标志码：A 文章编号：1000-0844（2025）05—1048—07DOI：10.20000/j.1000-0844.20230314001

Abstract： To mitigate seismic responses of buildings under earthquake excitation， this study considers actuator force constraints and proposes an active control methodology ensuring H∞ performance. First，sensors are deployed on building floors to capture relative displacement and velocity signals. Seismic excitation is characterized as energy-bounded uncontrollable disturbances.Based on this framework，a controllable building model is established. Subsequently， damper output force constraints are transformed into a saturation control problem with actuator force amplitude limiting，forming the basis for the development of an active seismic control controller. Finally， through Lyapunov stability analysis，a controller synthesis method simultaneously ensuring saturation constraints and H∞ performance is derived. Simulated results demonstrate that deploying two actuators，each with a maximum output of 6kN ，at the top and sub-top floors of an 1l-story building leads to a reduction of approximately 45% in structural displacement and velocity responses under El-Centro earthquake excitation. These findings validate the effectiveness of the proposed approach.

Keywords： active seismic control;actuator saturation; H∞ performance;controller design method

0 引言

通常而言，建筑物在设计建造时一般采用较为坚固的材料以保障抗震能力，因此，既有建筑较少预安装减震装置。（剩余10719字）