Semiactive Fuzzy Control of the Seismic Response of Building Frames

A methodology for semiactive control of building frames using multiple semiactive hydraulic dampers (SHDs) driven by fuzzy controllers is presented. The SHDs are installed in combination with steel bracings and are placed at different floor levels. The fuzzy controller is designed for the bottom-most SHD. Other controllers are assumed to provide control command for the variable damping coefficient of an SHD in certain proportion to that obtained for the bottom-most controller. Different proportions giving different distributions of the semiactive control force along the height of the frame are tried in order to arrive at the best distribution for obtaining the maximum control of a response quantity of interest. The methodology is developed in the MATLAB environment using the SIMULINK and FUZZY tool boxes. As an illustrative example, a five-storied steel frame is selected from the literature. The control of the responses of the frame under the El Centro earthquake record is obtained for a specified set of the frame, steel bracings, and SHD properties. An extensive parametric study is conducted to investigate the effectiveness of the control scheme under variation of the important parameters. The control strategy with the optimum values of parameters designed for the El Centro earthquake is tested for three synthetically generated earthquakes. The results of the study show that an efficient semiactive control strategy can be developed using a fuzzy rule base. Further, optimum combinations of parameters for maximum control are different for different response quantities of interest.

[1]  Shirley J. Dyke,et al.  Phenomenological Model of a Magnetorheological Damper , 1996 .

[2]  Akinori Tani,et al.  Intelligent fuzzy optimal control of building structures , 1998 .

[3]  Michael D. Symans,et al.  Fuzzy logic control of bridge structures using intelligent semi‐active seismic isolation systems , 1999 .

[4]  Takuji Kobori,et al.  Actual seismic response controlled building with semi-active damper system , 1999 .

[5]  Satish Nagarajaiah,et al.  Hybrid Control of Structures Using Fuzzy Logic , 1996 .

[6]  Roberto Rossi,et al.  Adaptive fuzzy control: theory versus implementation , 2002 .

[7]  Paul N. Roschke,et al.  Neuro-fuzzy control of structures using magnetorheological dampers , 2001, Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148).

[8]  Billie F. Spencer,et al.  Large-scale MR fluid dampers: modeling and dynamic performance considerations , 2002 .

[9]  Michael C. Constantinou,et al.  Seismic testing of a building structure with a semi-active fluid damper control system , 1997 .

[10]  Takuji Kobori,et al.  Dynamic loading test and simulation analysis of full‐scale semi‐active hydraulic damper for structural control , 2000 .

[11]  Shirley J. Dyke,et al.  Experimental verification of multiinput seismic control strategies for smart dampers , 2001 .

[12]  Faryar Jabbari,et al.  VIBRATION SUPPRESSION WITH RESETTABLE DEVICE , 2002 .

[13]  R. Clough,et al.  Dynamics Of Structures , 1975 .

[14]  Shirley J. Dyke,et al.  PHENOMENOLOGICAL MODEL FOR MAGNETORHEOLOGICAL DAMPERS , 1997 .

[15]  Erik A. Johnson,et al.  "Smart" Isolation for Seismic Control , 2000 .

[16]  Fabio Casciati,et al.  FUZZY CONTROL OF STRUCTURAL VIBRATION. AN ACTIVE MASS SYSTEM DRIVEN BY A FUZZY CONTROLLER , 1998 .

[17]  Ananth Ramaswamy,et al.  Multi‐objective optimal design of FLC driven hybrid mass damper for seismically excited structures , 2002 .

[18]  Masanobu Shinozuka,et al.  Friction‐Controllable Sliding Isolation System , 1993 .

[19]  Kenny C. S Kwok,et al.  Active control of along wind response of tall building using a fuzzy controller , 2001 .

[20]  Billie F. Spencer,et al.  Modeling and Control of Magnetorheological Dampers for Seismic Response Reduction , 1996 .

[21]  Ahsan Kareem,et al.  Semi-active tuned liquid column dampers for vibration control of structures , 2001 .

[22]  Takuji Kobori,et al.  Seismic response controlled structure with Active Variable Stiffness system , 1993 .

[23]  Jann N. Yang,et al.  RESETTING SEMIACTIVE STIFFNESS DAMPER FOR SEISMIC RESPONSE CONTROL , 2000 .

[24]  Anil K. Agrawal,et al.  Semi-active hybrid control systems for nonlinear buildings against near-field earthquakes , 2002 .

[25]  Wl L. Qu,et al.  Seismic response control of frame structures using magnetorheological/electrorheological dampers , 2000 .

[26]  Norman M. Wereley,et al.  Seismic Control of Civil Structures Utilizing Semi–Active MR Braces , 2003 .

[27]  Chih-Chen Chang,et al.  Adaptive fuzzy control for nonlinear building-magnetorheological damper system , 2003 .