Considering the large-scale communication delays mainly caused by the large detection arm length with several million kilometers in the heliocentric gravitational-wave detection mission,the attitude-orbit coordinated ...Considering the large-scale communication delays mainly caused by the large detection arm length with several million kilometers in the heliocentric gravitational-wave detection mission,the attitude-orbit coordinated control issue is addressed in this work.Firstly,to describe the formation detection motion in the Sun–Earth system,an attitude-orbit coupled relative motion model of the formation spacecraft is established with the assistance of a virtual structure.Then,a comprehensive model of communication delays caused by the large detection arm length and hardware resource constraints is constructed.Next,to realize the fast convergence of the formation attitude-orbit errors,a reliable and robust integration design of attitude-orbit coordinated control protocol is elaborated by delay-dependent Lyapunov function,in which the unknown lumped disturbances and the aftereffects of large-scale communication delays are suppressed with the adaptive control item and the delay-effect compensation one,respectively.Finally,numerical simulations are constructed with the typical heliocentric gravitational-wave detection mission scenario,verifying the validity and superiority of the proposed method with the existing findings as a comparison.展开更多
基金supported by the National Key R&D Program of China(2022YFC2204800)Hunan Provincial Natural Science Foundation(2024JJ6482)the Graduate Student Independent Exploration and Innovation Program of Central South University(2025ZZTS0116).
文摘Considering the large-scale communication delays mainly caused by the large detection arm length with several million kilometers in the heliocentric gravitational-wave detection mission,the attitude-orbit coordinated control issue is addressed in this work.Firstly,to describe the formation detection motion in the Sun–Earth system,an attitude-orbit coupled relative motion model of the formation spacecraft is established with the assistance of a virtual structure.Then,a comprehensive model of communication delays caused by the large detection arm length and hardware resource constraints is constructed.Next,to realize the fast convergence of the formation attitude-orbit errors,a reliable and robust integration design of attitude-orbit coordinated control protocol is elaborated by delay-dependent Lyapunov function,in which the unknown lumped disturbances and the aftereffects of large-scale communication delays are suppressed with the adaptive control item and the delay-effect compensation one,respectively.Finally,numerical simulations are constructed with the typical heliocentric gravitational-wave detection mission scenario,verifying the validity and superiority of the proposed method with the existing findings as a comparison.
