Passive, Semi-Active and Active Vibration Control Systems for ...

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Background
�More than 5000 steel offshore structures in the world 100 in China �Main dynamic excitations: wind, wave, ice <strong>and</strong> earthquake �<strong>Vibration</strong> amplitude reduced 15% the life of structure enhance double
Page 1 and 2: Passive, Semi-Active and Active Vib
Page 3: • The research fee in 2001: 516 m
Page 7 and 8: •It is urgent to have an effectiv
Page 9 and 10: JZ20-2MUQ 1:10 Model Placement of D
Page 11 and 12: 1.1 Design and Tests of Viscous Dam
Page 13 and 14: Configuration Parameters of dampers
Page 15 and 16: ×èÄáÁ¦(KN) 12 8 4 0 -4 -8 •
Page 17 and 18: ×èÄáÁ¦(kN) ×èÄáÁ¦(kN) T
Page 19 and 20: ×èÄáÁ¦(kN) 400 300 200 100 0
Page 21 and 22: 2. Smart Vibration Control with MR
Page 23 and 24: Type B (carrier fluid’s viscosity
Page 25 and 26: 2) MR damper Table 4 Parameters for
Page 27 and 28: a Amplitude=1.5cm frequency=0.25Hz
Page 29 and 30: 2) Fuzzy Control Rules for Offshore
Page 31 and 32: • Damping Force under Fuzzy Contr
Page 33 and 34: Under the bended ice force of 1 yea
Page 35 and 36: 3. Shaking Table Tests of Smart Vib
Page 37 and 38: Tested Results � Passive Off Pass
Page 39 and 40: II. Passive and semi-active damping
Page 41 and 42: Damping isolation mechanism � Tra
Page 43 and 44: Relationship of damping coefficient
Page 45 and 46: •Control Effectiveness with MR da
Page 47 and 48: 3.1 Numerical Analysis • Main Par
Page 49 and 50: EL+39.750 EL+16.5000 EL-23.500 AMD
Page 51 and 52: Acceleration gal Displacement mm Un
Page 53: Conclusions Recommended control sch

Passive, Semi-Active and Active Vibration Control Systems for ...

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