On the fuzzy control of offshore platform based on the pall-typed piezoelectric frictional damper

Offshore platform is established on the sea, expensive, difficulty maintenance, and vulnerable to destroy by ice force and earthquake loads, therefore the vibration control of offshore platforms is necessary. The intelligent control method is a recommended method for control of offshore platforms, and comparative analysis the seismic resistance effect of various control algorithms including fuzzy control, active control and passive control using piezoelectric frictional damper, the simulation results show that active control algorithm has optimal seismic resistance effect, fuzzy control algorithm is slightly inferior to active algorithm, Passive-off algorithm is the worst. But fuzzy control algorithm does not need to establish an accurate mathematical model, it is robustness, and has a good seismic resistance effect, so it is a promising control algorithm.