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On spacecraft maneuvers control subject to propellant engine modes.

A H Mazinan1

  • 1Department of Control Engineering, Faculty of Electrical Engineering, South Tehran Branch, Islamic Azad University (IAU), No. 209, North Iranshahr St., P.O. Box 11365/4435, Tehran, Iran.

ISA Transactions
|June 29, 2015
PubMed
Summary

This study introduces a novel spacecraft maneuver control strategy using propellant engine modes. It employs distinct control methods for small and large angle maneuvers, optimizing performance and precision.

Keywords:
Control allocationFinite burnGuidance systemHigh–low set of thrustersOPID(H) and QBC(L) strategiesOveractuated spacecraftPWPF modulatorPropellant engine on–off modes

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Area of Science:

  • Aerospace Engineering
  • Control Systems
  • Robotics

Background:

  • Spacecraft maneuvers require precise control of angular velocities and rotations.
  • Existing control strategies may not optimally address varying maneuver scales (small vs. large angles).
  • Propellant engine modes (on/off) present distinct operational characteristics influencing control approaches.

Purpose of the Study:

  • To develop and present a new control approach for spacecraft maneuvers utilizing propellant engine modes.
  • To differentiate control strategies for small angle maneuvers (engine on mode) and large angle maneuvers (engine off mode).
  • To enhance the precision and efficiency of spacecraft attitude control.

Main Methods:

  • Implementing a coarse-fine tuning strategy within the engine on mode.
  • Utilizing a rate feedback system for managing angular velocities in both engine modes.
  • Applying quaternion-based control (QBCL) for angular rotations in engine off mode (large angles).
  • Employing an optimum PID (OPIDH) strategy for angular rotations in engine on mode (small angles).

Main Results:

  • Demonstrated effective control for small angle maneuvers using OPIDH in engine on mode.
  • Successfully managed large angle maneuvers with QBCL in engine off mode.
  • Validated the rate feedback system for precise angular velocity handling across different engine modes.
  • The proposed strategy effectively handles both high and low thrust operations.

Conclusions:

  • The presented control strategy offers a robust and adaptable method for spacecraft attitude control.
  • The distinct control approaches for engine on and off modes enhance maneuverability for varying angular displacements.
  • This approach provides a foundation for improved spacecraft maneuver precision and efficiency.