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April 12, 2026Journal of Dynamic Systems Measurement and Control

Reduced Order Models for Precision Thermal Control of Earth Observation Telescope

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Authors

RCRajat ChourasiaAAAbhijit A. AdoniBSBalaji Srinivasan

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Overview

Simulation finds improved temperature stability and thermal gradient management in space telescopes, suggesting enhanced imaging performance.

Key Points

  • This research aims to improve thermal control methods for space telescopes to enhance imaging performance.
  • Developed a reduced-order model using proper orthogonal decomposition for online model predictive control.
  • Implemented a simulation for a Cassegrain telescope in a 500 km sun-synchronous orbit.
  • Encoded thermal gradient and stability constraints into the model predictive control formulation.
  • Achieved a 38% improvement in temperature stability over PID control.
  • Demonstrated a 24% improvement in stability compared to bang-bang control.
  • Reduced thermal gradients in critical optics components compared to traditional methods.
  • Improved temporal stability by avoiding overshoots up to ±6°C.

Cite This Study

Chourasia et al. (2026) studied this question.

synapsesocial.com/papers/69db37774fe01fead37c5896https://doi.org/10.1115/1.4071645
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