A Fuzzy Fast Terminal Approach for Tracking a Probe Around an Asteroid

Azadmanesh, Mahsa; Roshanian, Jafar; Hassanalian, Mostafa

doi:10.22034/jast.2022.362213.1131

Document Type : Original Article

Authors

¹ K. N. Toosi University of Technology

² Faculty of Aerospace Engineering of K. N. Toosi University of Technology

³ New Mexico Tech

https://doi.org/10.22034/jast.2022.362213.1131

Abstract

This paper employs the fast terminal sliding mode control with the sign and the saturation function to track the landing trajectory of a probe on an asteroid and to further improve the dynamic tracking performance. Then the controller is enhanced by adding the fuzzy control to both fast terminals. To make fair judgments on the performance of the suggested method, the proportional derivative sliding mode control with both the sign function and the saturation function is simulated as well. The two-point barycentric gravitational model is used to describe the weak gravity around the asteroid. The proposed fuzzy fast terminal method raises the convergence speed, improves the desired trajectory tracking accuracy and ensures that the system modes are placed on the sliding surface in a short, limited time. The absolute errors for the proportional derivative sliding mode controller, fast terminal sliding mode controller and improved fast terminal sliding mode controller are about 244, 139 and 113. The trajectories along all three coordinate axes in the proportional derivative sliding mode controller, fast terminal sliding mode controller and improved fast terminal sliding mode controller were tracked in 8 seconds, 5 seconds and 4 seconds. The results show how the fuzzy-fast terminal sliding mode control with the saturation function is the better choice of controller and how the fuzzy system is able to adapt to the momentary fluctuations and cover them successfully.

Keywords

20.1001.1.17352134.2023.16.2.11.8

Main Subjects

Flight Mechanics Stability & Contorl

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A Fuzzy Fast Terminal Approach for Tracking a Probe Around an Asteroid

References

References

Volume 16, Issue 2October 2023Pages 1-10

Volume 16, Issue 2
October 2023
Pages 1-10