Performance comparison of adaptive and ESO-based backstepping controllers for disturbance rejection in spacecraft

Document Type : selected article

Authors
Somayeh Jamshidi 1
mehdi mirzaei 2
1 Sahand University of Technology-Tabriz-Iran
2 دانشگاه صنعتی سهند
10.22034/jssta.2023.403307.1127
Abstract
This paper compares spacecraft attitude control in the presence of disturbance torque using an adaptive backstepping controller and an extended state observer-based backstepping controller. At first, the adaptive backstepping controller is designed, in which the unknown parameters in a specific disturbance model are estimated using an adaptive law so that the closed-loop system is stable. Afterward, the backstepping control based on the extended state observer is designed. In this method, first the standard backstepping controller is designed, and then disturbances with a completely unknown model are estimated by the extended state observer, and the disturbance is rejected by applying the feed-forward law. The simulation results for two different disturbance models show that the backstepping controller based on the extended state observer demonstrates very good results compared to the adaptive backstepping controller when no disturbance information is available.
Keywords
Spacecraft# Disturbance rejection# Backstepping controller# Extended state observer# Adaptive control
Subjects
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  • Receive Date 20 June 2023
  • Revise Date 16 August 2023
  • Accept Date 02 October 2023