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Course project for
Course project for
Spacecraft Dynamics and Control
Spacecraft Dynamics and Control
Projects for spacecraft dynamics and control can be found below
Project 1:
Project 1:
A Review of Sliding Mode Control For Attitude-Tracking of Spacecraft
A Review of Sliding Mode Control For Attitude-Tracking of Spacecraft
Abstract:
Abstract:
Attitude-tracking of spacecraft plays a critical role in many space missions. Therefore, it has gained a considerable attention from researchers in recent decades. Due to the presence of uncertainties and external disturbances, guaranteeing precise attitude-tracking is challenging. The sliding mode control (SMC) has a robust performance against uncertainties and external disturbances. Thus, it has been widely used in attitude-tracking control of spacecrafts. This paper investigates recent approaches for challenges of using SMC for attitude-tracking of spacecrafts. The basis of SMC is explained. Then, the significant shortcomings including chattering and convergence rate are investigated. Moreover, a brief review of recent progress in literature will be discussed. Furthermore, Terminal Sliding Mode (TSM) Control is reviewed as one the best approaches for the attitude-tracking of spacecraft up to now. Next, a super-twisting nonsingular TSM controller is designed based on existing studies. Finally, the designed controller performance will be evaluated in MATLAB/ SIMULINK for attitude-tracking scenario of a spacecraft.
Please find the project's presentation below,
A_Review_of_Sliding_Mode_Control_For_Attitude_Tracking_of_Spacecraft.pptxand the full report can be found as follows
A_Review_of_Sliding_Mode_Control_For_Attitude_Tracking_of_Spacecraft.pdfProject 2:
Project 2:
Fast Super-twisting Terminal Sliding Mode Control For Spacecraft Attitude-Tracking
Fast Super-twisting Terminal Sliding Mode Control For Spacecraft Attitude-Tracking
Abstract:
Abstract:
Attitude-tracking of spacecraft plays a critical role in many space missions. Therefore, it has gained considerable attention from researchers in recent decades. Due to the presence of uncertainties and external disturbances, guaranteeing precise attitude-tracking is challenging. The sliding mode control (SMC) has a robust performance against uncertainties and external disturbances. However, chattering phenomena and slow convergence rate are the shortcomings of conventional SMC. Thus, this paper investigates a finite-time control for attitude-tracking of spacecraft in the presence of uncertainty of inertia and unknown external disturbances. A super-twisting sliding mode control with a fast terminal sliding surface is utilized to achieve faster convergence and eliminate chattering phenomena. Numerical simulations in MATLAB/Simulink are presented to demonstrate the performance of the controller for a spacecraft attitude-tracking.
Figure 1: Control block diagram
Conclusion:
Conclusion:
In this paper, a finite-time control for attitude-tracking of spacecraft in the presence of uncertainty of inertia and unknown external disturbances has been investigated. A super-twisting sliding mode control with the fast terminal sliding surface has been utilized. Simulation results revealed that the utilized controller has a fast convergence rate and converges to zero in a finite-time. Also, the utilized controller showed a robust performance against uncertainties and unknown external disturbances and also eliminated related chattering successfully.
The full report can be found as follows.
Project_2_Fast_Super_twisting_Terminal_Sliding_Mode_Control_For_Spacecraft_Attitude_Tracking.pdfPage updated
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