Adaptive fault‐tolerant attitude tracking control for spacecraft formation with unknown inertia

Abstract

SummaryIn this paper, an adaptive fault-tolerant attitude coordinated tracking problem for spacecraft formation is investigated under a directed communication topology containing a spanning tree with the leader as the root, where inertia matrices and external disturbances are unknown time-varying. With no prior knowledge of faults and inertia, an adaptive approach is proposed to reject the influence of disturbances and uncertainties. Meanwhile, combining with a consensus algorithm and graph theory, an adaptive fault-tolerant attitude synchronization tracking control law is presented to regulate the attitude to a common time-varying reference state. Aiming at optimizing the control law, a dynamic adjustment function is introduced to adjust the control gain according to the attitude tracking error. The effectiveness of the proposed control approach is demonstrated through simulation results.

Minimum-Learning-Parameter-Based Fault-Tolerant Control for Spacecraft Rendezvous With Unknown Inertial Parameters

“…However, it is still a challenging work to construct such kind of controllers owing to the complexity of the external disturbance, unknown system dynamics and unexpected actuator faults. Despite of these difficulties, researchers have developed numerous strategies for spacecraft tracking control, including adaptive control [1][2][3][4][5], backstepping control [11][12][13], output feedback control [25,26] and sliding mode control [4,18,19,[31][32][33].…”

“…However, the inertial parameters are assumed to be exactly available in the foregoing results. To overcome this drawback, fruitful results has been reported recently [1][2][3][4][5][6][7][8]. In [1], an adaptive SMC method has been proposed for the liquid-filled spacecraft in the presence of unknown inertia and external disturbances.…”

“…For the multiple spacecraft coordinated control problem, adaptive laws were designed for estimating unknown parameters in [3], where a dynamic adjustment function was established to optimize the control gains. As a technological extension of [3], the passive fault-tolerant control strategy was applied to handle the actuator failures for spacecraft formation flying [4]. It is noteworthy that results in [1][2][3][4][5][6] cannot be directly utilized for rendezvous maneuver.…”

Two‐Layer Terminal Sliding Mode Attitude Control of Satellites Equipped with Reaction Wheels

“…Amongst different actuators, the reaction wheels are acknowledged for their proven performance, relative simplicity, fast response and high pointing control accuracy. Regardless of the actuators type, various control approaches have been proposed for satellite attitude stability and tracking problem including optimal approach [10,11], adaptive control [12,13], robust control [14,15], Lyapunov-based methods [9,16,17], observer-based approaches [18,19], fuzzy control [20,21], and sliding mode control [22][23][24]. Among all mentioned methods, the sliding mode control (SMC) approach is acknowledged for its ability to cope with the uncertainties and disturbances in the nonlinear systems.…”

“…Amongst different actuators, the reaction wheels are acknowledged for their proven performance, relative simplicity, fast response and high pointing control accuracy. Regardless of the actuators type, various control approaches have been proposed for satellite attitude stability and tracking problem including optimal approach , adaptive control , robust control , Lyapunov‐based methods , observer‐based approaches , fuzzy control , and sliding mode control .…”