Abstract: Force appropriation methods aim to provide an estimate for the force pattern required to excite a “pure” normal mode in a vibration test where multiple exciters are available. In this paper, ...

Abstract: Closed-form solutions are derived for coupled Riccati-like matrix differential equations describing the solution of a class of optimal finite time quadratic regulator problems with terminal ...

Abstract: This paper presents an algorithm for identifying state-space models of linear systems from frequency response data. A matrix-fraction description of the transfer function is employed to curve-fit ...

Abstract: This paper presents a robust control design using strictly positive realness for second-order dynamic systems. A robust strictly positive real controller stabilizes second-order systems with only ...

Abstract: An optimal active vibration absorber can provide guaranteed closed-loop stability and control for large flexible space structures with collocated sensors/actuators. The active vibration absorber is ...

Abstract: An integrated single-step design approach to the synthesis of a mechanical device and an active controller is presented for slew maneuvers of flexible space structures. A mechanical device ...

Abstract: A suspension system based on a band mechanism is investigated to provide the free-free conditions for ground-based validation testing of flexible space structures. The band mechanism consists of ...