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Adaptive predefined-time prescribed performance control for spacecraft systems.

Yuhan Su1, Shaoping Shen1

  • 1Department of Automation, School of Aerospace Engineering, Xiamen University, Xiamen 361102, China.

Mathematical Biosciences and Engineering : MBE
|March 10, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a new spacecraft attitude control method for high accuracy. The novel approach ensures precise maneuvering within a set time, improving spacecraft performance and reliability.

Keywords:
attitude maneuveringbackstepping controlpredefined-time controlprescribed performance controlspacecraft system

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Area of Science:

  • Aerospace Engineering
  • Control Systems Theory
  • Robotics

Background:

  • Spacecraft attitude control is critical for mission success.
  • Existing methods face challenges with accuracy and time constraints.
  • Uncertainties like inertial variations and actuator faults complicate control.

Purpose of the Study:

  • To develop a high-accuracy attitude maneuvering control scheme for spacecraft.
  • To ensure predefined-time stability for attitude errors.
  • To eliminate tracking error constraints during initial stages.

Main Methods:

  • Utilizing prescribed performance and shifting functions for error management.
  • Developing a novel predefined-time control scheme integrating prescribed performance and backstepping.
  • Employing Radial Basis Function Neural Networks (RBFNN) and minimum learning parameters to handle uncertainties.

Main Results:

  • Achieved preset tracking precision within a predefined time.
  • Established fixed-time boundedness for all closed-loop signals.
  • Demonstrated the control scheme's effectiveness through numerical simulations.

Conclusions:

  • The proposed control scheme effectively addresses high-accuracy spacecraft attitude maneuvering.
  • Predefined-time stability and precision are achieved despite system uncertainties and faults.
  • The method offers a robust solution for advanced spacecraft control applications.