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Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (1): 330673.doi: 10.7527/S1000-6893.2024.30673

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Attitude control schemes of yaw steering with front and back pointing to the sun alternately

Xi WANG1(), Changqing CHEN2, Xiaoping XU1, Zhen HUANG1   

  1. 1.Beijing Institute of Spacecraft System Engineering,Beijing 100094,China
    2.Beijing Institute of Control Engineering,Beijing 100094,China
  • Received:2024-05-13 Revised:2024-07-29 Accepted:2024-09-23 Online:2025-01-15 Published:2024-10-08
  • Contact: Xi WANG E-mail:explorer_wx@163.com
  • Supported by:
    National Level Project

Abstract:

In the traditional yaw-steering mode, spacecraft swings back and forth around the yaw axis within a certain angle range, causing the spacecraft’s front or back to be always exposed to direct sunlight, resulting in additional weight and power consumption costs for the thermal design of extravehicular equipment. A yaw-steering attitude control strategy with front and back pointing to the sun alternately is proposed, providing spacecraft with a uniformly exposed thermal environment. This not only simplifies the thermal design of extravehicular equipment, but also improves the reliability of the in-orbit equipment sensitive to temperature range fluctuations. Three attitude control strategies for yaw-steering with front and back pointing to the sun alternately are compared in terms of power generation and propellant consumption. The complementary-angle control strategy with the optimal comprehensive index is successfully applied to the Tianzhou-1 cargo spacecraft.

Key words: yaw steering, attitude control, pointing to the sun alternately, cargo spaceship, Tianzhou-1

CLC Number: