Comparison of Fuzzy Open/Close Control Effects on Seismic Excited Building Structure Chen Bo Zhang Zhiyong Pan ShuyunThe design method of the fuzzy control is introduced. With the essential principle of fuzzy control algorithm being presented, this paper makes research on open and close fuzzy control respectively based on an actual structure. The analysis results indicate that fuzzy control algorithm can reduce the structural responses under seismic excitation efficiently and all the fuzzy control algorithms have their characters.fuzzy control; seismic response; open/close control