A survey of spacecraft formation flying guidance and control (part 1): guidance

Abstract

Absfracf-This paper provides a comprehensive survey of spacecraft formation flying guidance (FFG). Here by the term guidance we mean both path planning (i.e., reference trajectory generation) and optimal, open Imp control design. FFG naturally divides into two areas: Deep Space (DS), in which relative spacecraft dynamics reduce to double integrator form, and Planetary Orbital Environments (POE), in which they do not (e.g. libration point formations). Both areas consider optimal formation reconfigurations. In addition, DS FFG addresses optimal U, v-coverages for multiple spacecraft interferometers and rest-to-rest rotations. The main focus of the POE literature, however, is "passive relative orbits" or PROs. PROs are thrustfree periodic relative spacecraft trajmtories used to design fuelefficient formations. Finally, we present a brief overview of robotic path planning and discuss some of the similarities between this field and formation flying guidance.

Badania w locie bezzałogowego statku powietrznego Twister

“…Badania te dotyczą przede wszystkim zagadnień związanych z aerodynamiką lotu grupowego ( [3,4,5], analizą nowoczesnych koncepcji sterowania [6] czy też syntezy praw sterowania (optymalnego [7], adaptacyjnego [8], ślizgo-wego [9], odpornego [10], opartego na informacji wizyjnej). Implementacja praw sterowania lotem grupowym powinna być poprzedzona wnikliwą analizą tworzonego algorytmu sterowania oraz jego licznymi badaniami symulacyjnymi pozwalającymi na weryfikację proponowanego podejścia.…”

Alternating magnetic field forces for satellite formation flying

“…The oscillatory force yields a displacement with a magnitude proportional to I I ( 4n f) 2 , e.g. (2) Similarly, again referring to the situation shown in Figure 1, nonzero currents, IY or Iz , yield magnet dipole components that are orthogonal to the magnetic field and produce torque.…”

“…The oscillatory force yields a displacement with a magnitude proportional to I I ( 4n f) 2 , e.g. (2) Similarly, again referring to the situation shown in Figure 1, nonzero currents, IY or Iz , yield magnet dipole components that are orthogonal to the magnetic field and produce torque. Following the same argument as for the force and assuming that oscillatory torques can be ignored, the net torque is given by (3) So by controlling the currents in the three coils of the smaller structure one force component and two torque components can be varied, allowing partial positioning and orientation of these two entities relative to each other.…”

Orbit period modulation for relative motion using continuous low thrust in the two-body and restricted three-body problems

“…The guidance and control of a wide variety of formation-flying concepts have been comprehensively surveyed in the previous decade, encompassing such applications as hyperspectral sensing and fractionated spacecraft (Scharf et al 2003(Scharf et al , 2004. Until very recently, such concepts generally assumed the use of conventional chemical propulsion for relative motion control.…”