A comparison of control techniques for large flexible systems

Abstract

Two broad approaches to the active control of large flexible systems are compared, namely, coupled control and independent modal-space control. The basic difference between the two approaches lies in the manner in which the feedback controls are designed. The two methods are compared qualitatively from design and computational viewpoints, and quantitatively through the work done, performance index, and spillover effects. The comparison shows the independent modal-space control method to possess many advantages over coupled control, as it permits easier design and implementation and requires less computational effort and control energy for implementation.