TY - JOUR

T1 - Control of dynamic response of a continuum model of a large space structure

AU - O'Donoghue, P. E.

AU - Atluri, S. N.

N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.

PY - 1986

Y1 - 1986

N2 - The problem of active control of the transient dynamic response of large space structures, modeled as equivalent continua, is investigated here. The effects of initial stresses, in the form of inplane stress resultants in an equivalent plate model, on the controllability of transverse dynamic response, are studied. A singular solution approach is used to derive a fully coupled set of nodal equations of motion which also include nonproportional passive damping. One approach considers a direct attack on this system of nodal equations. An alternative scheme implements a reduced-order model of coupled ordinary differential equations which are obtained in terms of the amplitudes of the pseudomodes of the nominally undamped system. Optimal control techniques are employed to develop a feedback control law. Algorithms for the efficient solution of the Riccati equation are implemented. Several examples are presented which involve the suppression of vibration of the transient dynamic response of the structure using an arbitrary number of control force actuators.

AB - The problem of active control of the transient dynamic response of large space structures, modeled as equivalent continua, is investigated here. The effects of initial stresses, in the form of inplane stress resultants in an equivalent plate model, on the controllability of transverse dynamic response, are studied. A singular solution approach is used to derive a fully coupled set of nodal equations of motion which also include nonproportional passive damping. One approach considers a direct attack on this system of nodal equations. An alternative scheme implements a reduced-order model of coupled ordinary differential equations which are obtained in terms of the amplitudes of the pseudomodes of the nominally undamped system. Optimal control techniques are employed to develop a feedback control law. Algorithms for the efficient solution of the Riccati equation are implemented. Several examples are presented which involve the suppression of vibration of the transient dynamic response of the structure using an arbitrary number of control force actuators.

UR - http://www.scopus.com/inward/record.url?scp=0022562280&partnerID=8YFLogxK

U2 - 10.1016/0045-7949(86)90212-9

DO - 10.1016/0045-7949(86)90212-9

M3 - Article

AN - SCOPUS:0022562280

VL - 23

SP - 199

EP - 209

JO - Computers and Structures

JF - Computers and Structures

SN - 0045-7949

IS - 2

ER -