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. 2022 Nov 11;22(22):8723.
doi: 10.3390/s22228723.

Microsatellite Uncertainty Control Using Deterministic Artificial Intelligence

Evan Wilt  1 , Timothy Sands  2
Affiliations

Microsatellite Uncertainty Control Using Deterministic Artificial Intelligence

Evan Wilt et al. Sensors (Basel). .

Abstract

This manuscript explores the applications of deterministic artificial intelligence (DAI) in a space environment in response to unknown sensor noise and sudden changes in craft physical parameters. The current state of the art literature has proposed the method, but only ideal environments, and accordingly this article addresses the literature gaps by critically evaluating efficacy in the face of unaddressed parametric uncertainties. We compare an idealized combined non-linear feedforward (FFD) and linearized feedback (FB) control scheme with an altered feedforward, feedback, and deterministic artificial intelligence scheme in the presence of simulated craft damage and environmental disturbances. Mean trajectory tracking error was improved over 91%, while the standard deviation was improved over 97% whilst improving (reducing) control effort by 13%.

Keywords: adaptive control; control systems; deterministic artificial intelligence; feedback; feedforward.

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Conflict of interest statement

The authors declare no conflict of interest. Authors have no personal circumstances or interest that may be perceived as inappropriately influencing the representation or interpretation of reported research results.

Figures

Figure A1
Figure A1
Simulink model overview.
Figure A2
Figure A2
Trajectory subsystem depicted in Figure A1.
Figure A3
Figure A3
controllers’ and observers’ subsystem depicted in Figure A1.
Figure A4
Figure A4
Observer subsystem depicted in Figure A3.
Figure A5
Figure A5
(a) Feedback controller subsystem depicted in Figure A3; (b) proportional, derivative, integral controller depicted in subfigure (a).
Figure A6
Figure A6
Actuators’ subsystem depicted in Figure A1.
Figure A7
Figure A7
(a) Orbital frame calc subsystem depicted in Figure A1; (b) Euler angles output subsystem depicted in Figure A1.
Figure A8
Figure A8
Dynamics Calc subsystem depicted in Figure A1.
Figure A9
Figure A9
Disturbances’ subsystem depicted in Figure A1.
Figure A10
Figure A10
Quaternion Calc subsystem depicted in Figure A1.
Figure A11
Figure A11
Orbital Frame Calc subsystem depicted in Figure A1.
Figure A12
Figure A12
DCM subsystem depicted in Figure A1.
Figure A13
Figure A13
Euler Angle Calc subsystem depicted in Figure A1.
Figure 1
Figure 1
NASA’s Cyclone Global Navigation Satellite System (CYGNSS) mission, a constellation of eight microsatellites, will improve hurricane forecasting by making measurements of ocean surface winds in and near the eye wall of tropical cyclones, typhoons and hurricanes throughout their life cycle. Figure taken from [1] in compliance with NASA’s image use policy [2].
Figure 2
Figure 2
(a) Thirty degree yaw feedforward plus feedback (FFD + FB) control, (b) thirty degree yaw hybrid deterministic artificial intelligence (DAI) control. Both figures include display of tracking errors in the zoomed-inset graphic. Notice the ordinate scale, respectively of insets in subfigure (a) and (b) to reveal the relative comparison.
Figure 3
Figure 3
Control with perturbations. (a) Thirty degree yaw using feedforward plus feedback (FFD + FB) control; (b) thirty degree yaw hybrid deterministic artificial intelligence control. Both figures include display of tracking errors in the zoomed-inset graphic. Notice the ordinate scale, respectively of insets in subfigure (a,b) to reveal the relative comparison.
Figure 4
Figure 4
(a) One hundred degree yaw feedforward plus feedback (FFD + FB) control; (b) one hundred degree yaw with hybrid deterministic artificial intelligence (DAI) control. Both figures include display of tracking errors in the zoomed-inset graphic. Notice the ordinate scale, respectively of insets in subfigure (a,b) to reveal the relative comparison.
See this image and copyright information in PMC

References

    1. NASA Begins to Build Satellite Mission to Improve Hurricane Forecasting. Release 15-173, 15 August 2015. [(accessed on 22 July 2022)]; Available online: https://www.nasa.gov/press-release/nasa-begins-to-build-satellite-missio....
    1. NASA Image Use Policy. [(accessed on 22 July 2022)]; Available online: https://gpm.nasa.gov/image-use-policy.
    1. Wie B., Barba P. Quaternion feedback for spacecraft large angle maneuvers. J. Guid. Con. Dyn. 1985;8:360–365. doi: 10.2514/3.19988. - DOI
    1. Wie B., Weiss H., Arapostathis A. Quarternion feedback regulator for spacecraft eigenaxis rotations. J. Guid. Con. Dyn. 1989;12:375–380. doi: 10.2514/3.20418. - DOI
    1. Bilimoria K., Wie B. Time-Optimal Three-Axis Reorientation of a Rigid Spacecraft. J. Guid. Con. Dyn. 1995;43:446–452. doi: 10.2514/3.21030. - DOI

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