Franklin Y Cheng and Hongping Jiang 1998 Smart Mater. Struct. 7 654 doi:10.1088/0964-1726/7/5/009
Franklin Y Cheng and Hongping Jiang
Show affiliationsThis paper presents a theoretical study of a hybrid seismic response control system comprising a passive fluid viscous damper and an active control system with a hydraulic actuator and acceleration sensors. The analytical model of this system is derived in the discrete time domain with actuator and damper dynamics considered. Based on digital control theory, a state observer is established for optimal control strategies of the hybrid system. This study shows that the hybrid system gains the advantages of both active and passive control techniques currently in vogue; and that, with the state observer technique, a seismic response control system is more effective and less complicated because full-state feedback seismic control algorithms can be implemented by means of acceleration sensors, and a smaller number of sensors is required. A numerical simulation for seismic response of a building structure with a hybrid control system is presented to demonstrate the effectiveness of this control strategy for the hybrid system.
43.40.+s Structural acoustics and vibration
47.85.Kn Hydraulic and pneumatic machinery
89.60.Gg Impact of natural and man-made disasters
46.70.-p Application of continuum mechanics to structures
07.07.Tw Servo and control equipment; robots
07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
Instrumentation and measurement
Issue 5 (October 1998)
Received 13 January 1997, accepted for publication 1 July 1997
Franklin Y Cheng and Hongping Jiang 1998 Smart Mater. Struct. 7 654
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