Energy optimal degree of contollability and observability for regulator and maneuver problems Academic Article uri icon


  • Motivated by the problem of shape control of large flexible spacecraft, the authors have developed, in previous works, concepts of the degree of controllability for purposes of guiding the control system designer in choosing actuator locations. These concepts are of importance for other uses such as model reduction and hierarchical control. The concepts are found to depend on which of these uses are being considered, and on the control objective, such as regulation about an equilibrium point, or tracking during a maneuver. A basic framework for the generation of concepts of the degree of controllability and of the degree of observability is presented here.

author list (cited authors)

  • Longman, R. W., & Alfriend, K. T.

publication date

  • January 1990