Dynamics of Space Free-Flying Robots with Flexible Appendages

A. Ebrahimi; Aliakbar Dr. Moosavian

Volume 4, Issue 4 , December 2007, , Pages 29-36

Abstract
  A Space Free-Flying Robot (SFFR) includes an actuated base equipped with one or more manipulators to perform on-orbit missions. Distinct from fixed-based manipulators, the spacecraft (base) of a SFFR responds to dynamic reaction forces due to manipulator motions. In order to control such a system, it ...  Read More

COMPARISON BETWEEN MINIMUM AND NEAR MINIMUM TIME OPTIMAL CONTROL OF A FLEXIBLE SLEWING SPACECRAFT

Aliakbar Dr. Moosavian

Volume 3, Issue 3 , September 2006, , Pages 135-142

Abstract
  In this paper, a minimum and near-minimum time optimal control laws are developed and compared for a rigid space platform with flexible links during an orientating maneuver with large angle of rotation. The control commands are considered as typical bang-bang with multiple symmetrical switches, the time ...  Read More

Robust Optimal Control of Flexible Spacecraft During Slewing Maneuvers

Aliakbar Dr. Moosavian

Volume 2, Issue 4 , December 2005, , Pages 37-43

Abstract
  In this paper, slewing maneuver of a flexible spacecraft with large angle of rotation is considered and assuming structural frequency uncertainties a robust minimum-time optimal control law is developed. Considering typical bang-bang control commands with multiple symmetrical switches, a parameter optimization ...  Read More