Attitude state tolerance estimation and fastly precise control of microsatellite for swarm flying
CHEN Xiao-qian
RAN De-chao
CAO Lu
Abstract：A state tolerance estimation and fastly precise control approach is presented for attitude determination and control problem of microsatellite in swarm flying with severe modeling error.In this approach,a scattered Gauss-Hermite quadrature filter is first developed based on the centered error entropy.Applying this filter,the attitude state is estimated with high accuracy and great robustness to modeling error and heavy-tailed non-Gaussian noise.Moreover,a disturbance observer-based predefined-time attitude tracking controller is designed.The disturbance is precisely estimated and compen-sated within the predefined time.The closed-loop attitude tracking control system governed by this controller is proved to be predefined-time stable.The desired time-varying attitude trajectory is followed with zero error after that predefined time.The predefined time control problem and the actuator constraint problem are simultaneously solved.Using this approach to a microsatellite attitude control system design,simulation results are given to demonstrate that the attitude estimation accuracy and attitude control precision as well as convergence rate can be significantly improved by the presented approach.
Keywords：microsatelliteactuator constraintdisturbance rejectioncentered error entropyheavy-tailed non-gaussian noiseprecise compensationpredefined-time control
Publication Date：2023-12-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 2247-2256 )