Algorithms of Active Control on Architectural Structure Considering the Influence of Its Foundation

Several control Algorithms for architectural structure considering and ignoring influence of Structure-Soil Interaction (SSI) are discussed respectively. Corresponding to stochastic analysis, the H
2
norm is regarded as optimal index. To definite analysis, the H
∞
norm is regarded as an optimal index. They have their own advantages and defects. The mixed H
2
H
∞
control scheme gives a scheme that minimizes H
2
norm of the closed-loop system on condition that the H
∞
norm is smaller than a definite value (γ). The systems controlled by three types of controllers which based on two types of model (considering and ignoring SSI) respectively are studied. A simulative example is given.