结构主动控制中振动台液压动力机构的建模与分析

Modeling and Analyzing of Hydraulic Power Element in Active Structural Control

结构主动控制实验系统中振动台空载和满载时的液压动力机构具有不同的特性.为了能有效设计空载和满载振动台的控制器,准确复现振动台的输入波形,基于主动质量阻尼主动控制系统,研究了空载和满载振动台的激振系统建模,采用有限元方法验证了分析结果.结果表明,系统建模是正确的,为下一步振动台控制器的设计提供了设计依据.

For the hydraulic power element of a shaking table actuation system in the active control experimental system, the unloaded system has different characters compared with the loaded one. In order to design an effective controller and accurately make the input wave, the dynamic model of unloaded system and loaded one was constructed based on the active mass damper control experimental system. This dynamic model was validated by finite element method. The results indicate that the constructed model is correct and can be provided as a basis for the shaking table controller design in next step.