... vibration control intelligent structures robust control adaptive control closed loop systems actuators vibrations Identification and control of flexible structures has received considerable attention in the literature. Much of the research is motivated by the space industry, where large...

... on the quantitative feedback theory (QFT), which is a unified theory that emphasizes the use of feedback for achieving the desired system performance tolerances in the face of plant uncertainties and plant disturbances. Performance, stability, and robustness of the closed-loop system have been taken into account...

... ( 31 ). A brief review of SVD-based eigenstructure assignment technique is provided as follows. A state-space form of the closed-loop system given in Eq. 10 can be written as 30 z ̇ = ( A + B 1 K c ) z + B 0 w where z = { x x ̇ } ∊ R N × 1...

...Claes Olsson Active vibration isolation from an arbitrarily, structurally complex receiver is considered with respect to the impacts of structure flexibility on the open- and closed-loop system characteristics. Specifically, the generally weak influence of flexibility on the open-loop transfer...

... wave propagation acoustic wave scattering plates (structures) laminates eigenvalues and eigenfunctions shear deformation closed loop systems vibration control vibrations structural acoustics FLPT SVD PEP high frequency open-loop control closed-loop control wave scattering...

.... The substructure modes in the control bandwidth have a large impact on the stability of the closed-loop system. For example, if a substructure mode is close to a rotor mode within the control bandwidth, a high order controller design based only on the rotor model often tends to excite the nearby substructure modes...

... building seismology vibrations adaptive control uncertain systems nonlinear control systems control system synthesis asymptotic stability closed loop systems vibration isolation adaptive control backstepping hysteresis base isolated systems stability In this paper, we develop two...

... the controller design of velocity feedback in collocated and noncollocated senor/actuator configuration. Analyses show that the reduced-order controller not only guarantees the closed loop system stability but also effectively suppress the unbalance response. 1 Vibration control of steady state unbalance...

... frequency range. The closed-loop system is robust with respect to significant variations of acoustical parameters in the external field. Block diagram of an active resonator for noise absorption The control objective is described by Eq. 18 : The closed loop is stable if Eq. 18 is stable, which...

... undesirable limit cycle behavior, and this has been largely overlooked in the literature. vibrations vibration control structural acoustics closed loop systems nonlinear control systems control system synthesis intelligent control feedback damping control nonlinearities 21 05 2004...

... control can asymptotically stabilize the nonlinear string. Numerical simulation of the closed loop system demonstrates the effectiveness of the proposed control. Contributed by the Technical Committee on Vibration and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS . Manuscript...

...: J. Q. Sun. 01 October 1998 01 December 1999 vibration control closed loop systems pole assignment zero assignment Dynamic vibration absorber (DVA) is a passive resonator coupled with a primary system. At a pretuned frequency, the resonator absorbs vibration energy...