渤海某平台磁流变智能阻尼隔振控制

目的 研究了利用主动变阻尼控制系统优化方法设计磁流变智能阻尼隔振平台结构，为实际工程利用磁流变阻尼器为结构减振设计提供方法。方法 采用ANSYS软件提供的结构刚度矩阵庞大，不易进行半主动和主动控制系统设计，根据ANSYS有限元分析提炼出简化计算模型，基于主动最优控制设计方法，设计了磁流变阻尼隔振系统，进行了冰激振动和地震动作用下的磁流变阻尼智能振动控制反应分析．结果 该平台半主动磁流变阻尼隔振体系对导管架端帽处最大位移和甲板处最大加速度均有很好的控制效果，隔振层位移满足采油工艺要求．结论 主动最优控制设计方法是一种很好的设计方法，具有广泛的应用前景；对于平台结构半主动磁流变智能阻尼隔振体系是较好的控制方案．

An Offshore Platform with MR Smart Damping Isolation Control System

A design procedure for MR smart damping isolation scheme for a platform structure is presented,and a design method for practical engineering using MR damper is given.The simple computed model is derived from the analysis of the platform structure by ANSYS program.And based on the active optimal control design method,the MR smart damping isolation control system is finished.With MR smart damping isolation,the analyses of platform structures subjected to earthquakes and ice are done.The analyzed results show that the semi-active scheme utilizes lead-rubber bearings and MR dampers to effectively control not only displacements of the jacket cap and accelerations of the deck but also the drifts of damping isolation layer to satisfy the requirement of operation.As a result,the active optimal control design method is a good one with a widely used future and MR damping semi-active isolation scheme is a good vibration control one for platform structures.