ANALYSIS OF STRUCTURES CONTROLLED WITH A NEW VARIABLE DAMPING SEMI-ACTIVE (VDSA) DEVICE
A new semiactive device is proposed in this paper. It is composed of two fixed-orifice viscous fluid dampers installed in the form of V whose top ends are attached to the upper floor and their lower ends to a point that can move along a vertical rod. The mechanism is termed the Variable Damping Semi-Active (VDSA) device. By varying its position, an optimal instantaneous damping added to the structure to minimize the response is obtained. The position of the moving end of the device, an algorithm based on a variation of the Instantaneous Optimal control Theory and which includes a generalized LQR scheme. This modified algorithm, referred to as Qv, is based on the minimization of the performance index J quadratic in the state vector, the control force vector, and a vector of absolute velocity measured at selected points. Two variants of the algorithm are used to compute the seismic response of a single and a multi degree of freedom structure.
Structural Control Earthquake Semiactive Control Control Algorithm Damping.
Orlando Cundumi Luis E. Suarez
Director and Faculty, Dept. of Engineering, Caribbean University, Puerto Rico, USA Professor, Dept. of Civil Engineering, University of Puerto Rico, Mayagüez, Puerto Rico, USA
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）