Attitude maneuver control of liquid-filled spacecraft with unknown inertia and disturbances

Abstract

The attitude maneuver dynamics and control strategy for a fuel-filled spacecraft with uncertain inertia and external disturbances are studied. The mathematical model of a three-axis stabilized spacecraft is established based on the law of conservation of momentum, and the liquid fuel inside the partially-filled fuel tank is represented by an equivalent two-mode spring-mass model. The adaptive sliding mode control law is designed for this kind of underactuated system, and the Lyapunov stability analysis guarantees that all system trajectories reach and remain on the sliding surface. Then, the multiple mode input shapers are used to suppress the sloshing of the fluid fuel. The numerical results show good performance and effectiveness of the control strategy.

D-Type Iterative Learning Control for Open Container Motion System With Sloshing Constraints

“…Liquid sloshing occurs widely in the fields of aerospace [2][3][4], industrial fluid packaging [5][6], transportation [7][8][9], and so on. For example, the liquid in the fuel tank of the spacecraft will shake violently with the movement and attitude change of the spacecraft, which may lead to the attitude failure of the spacecraft and the failure of the fluid-filled container structure [10]. The liquid shaking in the fluid filling production line may cause the liquid in the tank to splash, contaminate the packaging seal, make the packaging seal lax, and affect the shelf life.…”

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].…”

“…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. Taking the convergence rate into account, an inertial parameter identification algorithm has been exploited with globally finite-time stability being ensured [2].…”

“…Taking the convergence rate into account, an inertial parameter identification algorithm has been exploited with globally finite-time stability being ensured [2]. Obviously, controllers in [1,2] are only applicable for single spacecraft control issues. 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.…”