ZHU Ya hui1, WENG Ze yu1, GENG Chao1, ZHU Fu hong2

(1.College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;

2. Chinese people's Liberation Army 73021 Troops, Hangzhou 310023, China)

Abstract: In order to solve the problems of vibration for ship pouver system, the technology of floating raft is olation was investigated.Aiming at researching the switch control algorithm of the semi active control floating raft isolation system of three freedom degrees,by studying the switching control algorithm of semi active control of floating raft isolation system, two kinds of switching control algorithms were presented.Through the establishment of two kinds of semi active switch control floating raft isolation system simulation models, the base acceleration response of simulation analysis of the semi active control floating raft isolation system was completed. The influence of excitation frequency on the base acceleration about semi active control floating raft isolation system under the control of two switch control algorithms was studied. The effectiveness that two switch control algorithms improve the vibration isolation effect of floating raft isolation system was discussed. The results indicate that the semi active control of floating raft isolation system under the two switch control algorithm has a certain attenuation at different excitation frequencies. 

Key words: floating raft isolation; semi active vibration control; switch algorithm