Finite-Time Coordinated Attitude Control for Spacecraft Formation Flying under Input Saturation
QL Hu (Beihang University, China), J Zhang (Harbin Institute of Technology, China) & MI Friswell (Swansea University)
Journal of Dynamic Systems, Measurement and Control, Vol. 137, No. 6, June 2015, paper 061012
In this paper, finite-time attitude coordinated control for spacecraft formation flying subjected to input saturation is investigated. More specifically, a bounded finite-time state feedback control law is first developed with the assumption that both attitude and angular velocity signals can be measured and transmitted between formation members. Then, a bounded finite-time output feedback controller is designed with the addition of a filter, which removes the requirement of the angular velocity measurements. In both cases, actuator saturation is explicitly taken into account, and the homogeneous system method is employed to demonstrate the finite-time stability of the closed-loop system. Numerical simulation results are presented to illustrate the efficiency of the proposed control schemes.
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Link to paper using doi: 10.1115/1.4029467
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