Control of super high-rise buildings considering characteristics of wind with variable gain

Abstract

In recent years, as buildings become higher, the effect of wind disturbance on the tall buildings increases. In the general active control systems with fixed gain, the control force is approximately proportional to the strength of the disturbance. So the performance of the device may not be fully demonstrated because of wind disturbance intensity fluctuation. For example, when the gain is designed according to the wind disturbances of strength once in 50 years, the system may not obtain enough control force when the wind of strength once a year is entered. In this paper, we designed an active vibration control system, based on the State Dependent Riccati Equation (SDRE), to make the gain variable according to the strength of the wind for a super high-rise building with a height of 300 m. Numerical simulations for wind disturbances of strength once in 50 years and winds of strength once a year show that the proposed method can achieve high performance regardless of the strength of wind disturbance.