Abstract A low-jerk attitude guidance method is developed, based on an analytical smoothing of a bang-off-bang maneuver. A set of closed-form equations are derived and used to plan constrained low-jerk maneuvers, with prescribed boundary conditions, inertia, time and maximum control torque. The guidance law is first developed for one-dimensional and then three-dimensional rotations using two different approaches: (i) by designing a rotation about the Euler axis and (ii) by using the inverse kinematics equations. A generic model of the torque induced by a multi-body appendage is derived using the lumped-parameter method. This method can also be used to approximate the dynamic behavior of flexible appendages. The simulations results show that the smoothing techniques reduce the excitation of multi-body and flexible structures during a slew maneuver.
Highlights Lumped-parameter method is used to model multi-body and flexible appendages dynamics. Trigonometric functions can be used to plan smooth slew maneuvers. Smoothing can be applied to both eigenaxis rotations and generic 3-D maneuvers. Smoothed maneuvers lead to lower appendage oscillations than classical control.
Analytical low-jerk reorientation maneuvers for multi-body spacecraft structures
Acta Astronautica ; 178 ; 1-14
2020-08-17
14 pages
Article (Journal)
Electronic Resource
English