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    Sliding Mode Control for Seismic-Excited Linear and Nonlinear Civil Engineering Structures

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    Date
    1994
    Author
    Yang, J.N.
    Wu, J.C.
    Agrawal, A.K.
    Li, Z.
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    Abstract
    Control methods based on the theory of variable structure system (VSS) or sliding mode control (SMC) are presented for applications to seismic-excited linear, nonlinear and hysteretic civil engineering structures. Emphasis is placed on continuous sliding mode controls using only the measured information from a limited number of sensors installed at strategic locations are also presented for practical implementations. Furthermore, controllers are proposed for applications to parametric control, including the use of active variable stiffness (AVS) systems and active variable dampers (AVD). Under suitable conditions, a complete compensation of the structural response can be achieved. Among the contributions of this report are the establishment of saturated controllers, controllers for static output feedback, parametric control, etc. The robustness of the control methods, the application of the static output feedback controllers, the control effectiveness in case of actuator saturation and the applicability to parametric control are all demonstrated by numerical simulation results. Applications of the control methods to linear buildings, fixed-based buildings with large ductility, base-isolated buildings using lead-core rubber bearings and elastic nonlinear structures are presented.<BR>
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    http://hdl.handle.net/10477/705
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