... 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, lightly damped, flexible structures...

... 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...

... to demonstrate the performance of the sensitivity-enhancing feedback control. The feasibility and effectiveness of using multiple closed-loop systems with different sensitivity-enhancing controls to identify structural damage are examined, and the effect of measurement noise to the damage identification...

...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...

... using the damaged SPE. 18 07 2005 03 02 2006 finite element analysis acoustic wave propagation acoustic wave scattering plates (structures) laminates eigenvalues and eigenfunctions shear deformation closed loop systems vibration control vibrations structural acoustics...

.... 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 Note that 1 ∕ m u...

... 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. 27 07 2003 21 07 2005 shafts...

... frequency range. The closed-loop system is robust with respect to significant variations of acoustical parameters in the external field. Resonators are important devices for noise suppression ( 1 ). Performance of the device is related to its resonant frequency and determined by its...

... 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. A string-based system can be extracted from many physical systems, such as magnetic tapes, cables, belts, wires, chains. This and other kinds...

... of C s must be in the left half of the complex plane. Hence the requirement that C s be minimum phase. 2 Block diagram of the closed-loop system Figure 2 plots a block diagram of the closed-loop system implementing the HDVA proposed in Section 2. This can...