Semi-active control of wind vibration of giant-subtype control structure system

magnetorheological dampers;  Giant-subtype control structure system;  wind vibration reaction;  Semi-active control

The analysis method of semi-active control of the wind vibration reaction of the giant-subtype control structure system using magnetorheological damper is studied, the vibration control equation of the structural system under random pulsating wind load is established, the computer simulation of the pulsating wind load is carried out by the random vibration theory, and the limited Hrovat optimal semi-active control algorithm based on the classical optimal control theory is used to study the control of the wind vibration reaction of the structural system. The analysis shows that after semi-active control of the giant~subtype control structure system by magnetorheological damper, the vibration damping rate VAR of the displacement and acceleration control at the top layer of the main structure is 29.65% and 68.09%, respectively, and the vibration damping rate VAR of the acceleration control of the second substructure and the top acceleration control of the third substructure is 2.3% and 40.18%, respectively, which effectively reduces the wind vibration reaction of the structural system.