摘要
考虑了地基岩土动力学特性对结构控制的影响 ,给出了以位移和控制力的加权线性二次型为受控输出 ,以绝对加速度为测量输出 ,当考虑地基岩土动力学参数做为区间变量摄动时 ,给出了使闭环系统具有鲁棒稳定和鲁棒性能的动态输出反馈控制器的解 。
Considering the effects of dynamics properties of rock soil foundation on structural control, dynamics properties of the lower structure(base and ground) was described by a impedance matrix that depend on the itself properties of the rock or soil instead of basic frequency of the system.The super structure of the system was considered as librating problems of beam that one end is fixed on the base and the other end is free.Therefore the dynamic state equations of the all the system was given.When the original dynamic parameters,including Elastic Modulus,Poisson Ratio,Basic Frequency and Density of the rock or soil as ground,were used as interval variable perturbance, the perturbing intervals of a rigid matrix and a damping matrix was computed,furthermore, the perturbing intervals of system matrix is computed. A controller that make close loop system hold stable robustness and property robustness was given by solving a standard H ∞ control problem of a auxiliary system.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第5期557-560,共4页
Journal of Northeastern University(Natural Science)
基金
高等学校骨干教师资助项目
关键词
岩土动力学
相互作用
结构控制
H∞控制
鲁棒控制
地基
土木工程
dynamics properties of rock and soil
structure soil interaction
structural control
H ∞ control
robust control
