Spacecraft control attitude adaptative
Pro Research Analysisby 
Searched over 200M research papers
Consensus Meter
Adaptive Spacecraft Attitude Control: A Comprehensive Overview
Introduction to Adaptive Attitude Control in Spacecraft
Adaptive attitude control is crucial for maintaining the orientation of spacecraft in the presence of uncertainties and disturbances. This article synthesizes recent advancements in adaptive control strategies for spacecraft attitude stabilization, tracking, and synchronization, highlighting key methodologies and their effectiveness.
Adaptive Nonsingular Predefined-Time Control
Predefined-Time Control Strategy
A novel adaptive nonsingular predefined-time control strategy has been developed to address the challenge of inertia uncertainties in rigid spacecraft. This method ensures that the spacecraft's attitude converges to a desired state within a predefined time, which is determined by a simple parameter. The use of quadratic functions in the controllers avoids singularities, simplifying the stability analysis and enhancing the method's effectiveness.
Fault-Tolerant Attitude Tracking Control
Prescribed Performance Guarantees
Addressing the stringent performance requirements of spacecraft missions, researchers have developed an adaptive fault-tolerant attitude tracking control system. This system guarantees consistent control performance despite actuator faults and input saturation. By transforming the original attitude tracking error dynamics into a state-constrained equivalent, the system ensures robust stabilization and boundedness of all closed-loop signals .
Reconfigurable Control Systems
Post-Capture Attitude Takeover
In scenarios where a service spacecraft captures a target spacecraft, significant changes in mass properties and thruster configuration occur. A reconfigurable control system has been designed to adapt to these changes, using a modified adaptive dynamic inverse controller to achieve global asymptotic stability despite model uncertainties and nonlinearities. This system effectively redistributes thrust forces to accommodate large shifts in the center of mass.
Simplified Adaptive Control for Flexible Spacecraft
Rotational Maneuver and Vibration Suppression
A simplified adaptive control system has been proposed for the rotational maneuver and vibration suppression of orbiting flexible spacecraft. This system uses a moment-generating device on the central rigid body and requires only four adjustable parameters. The control law derived ensures adaptive output regulation despite large parameter uncertainties and disturbances.
Distributed Adaptive Event-Triggered Control
Attitude Synchronization of Multiple Spacecraft
For multiple spacecraft, a distributed adaptive event-triggered control scheme has been developed to achieve attitude synchronization. This scheme updates controllers in an aperiodic manner based on event-triggered errors, ensuring stability and preventing the accumulation of triggering instants. The approach effectively handles limited inter-spacecraft communication, model uncertainties, and external disturbances.
Learning-Based Adaptive Attitude Control
Leader-Following Approach
A learning-based adaptive attitude control approach has been introduced for spacecraft formation. This method employs a two-layer prescribed performance controller to handle unknown inertial parameters, external disturbances, and unmodeled uncertainties. The learning-based control strategy enhances adaptiveness, ensuring uniform ultimate boundedness of all closed-loop signals.
Conclusion
Adaptive control strategies for spacecraft attitude control have seen significant advancements, addressing various challenges such as inertia uncertainties, actuator faults, and external disturbances. These methodologies, ranging from predefined-time control to learning-based adaptive control, ensure robust and reliable performance, crucial for the success of spacecraft missions. The continuous development in this field promises even more sophisticated and resilient control systems in the future.
Sources and full results
Most relevant research papers on this topic