Active Control Performance Enhancement for Reduced Order Models of Large Scale Systems

Active structural control offers an exciting alternative solution to the dual problems of safety and comfort prevalent in design studies associated with tall buildings, long bridges, large spinning spacecrafts and other flexible engineering structures. This has led to an upsurge of interest by structural engineers exploring the various means by which control concepts may be utilized to advantage in design. A key problem in active control of structures is the problem of spillover which results when design procedures based on reduced order models (ROM) are applied to the actual large scale structures (LSS). A singular value decomposition (SVD) scheme for model reduction of LSS with a direct and simple procedure that provides a methodology for performance enhancement and spillover compensation is presented in this paper.