Adaptive Control for Vibration Attenuation of a Laser Communication Terminal

Research output: Contribution to conferencesPaperContributedpeer-review

Contributors

Abstract

This paper presents an adaptive control scheme to improve the data transmission rate of a Laser Communication Terminal by attenuating external vibrations. The main contributors for performance degradation are multiple superimposed vibrations originating from the satellite's reaction wheels, which can excite resonance modes. They are introduced to the terminal through its mounting structure and their influence on the pointing error can be modeled as an output disturbance. The proposed controller estimates this disturbance and then attenuates it based on the principle of destructive interference. For that, a combination of internal model control, spectral analysis and modified pseudo-gradient algorithms is used. The developed controller is compared to a high bandwidth H infinity-baseline controller using a nonlinear simulation framework with varying mounting configurations and model uncertainties. To evaluate the performance and robustness of the proposed scheme, a realistic vibration scenario is investigated with multiple parameter studies. The results show a significant improvement of pointing performance over the entire anticipated uncertainty range.

Details

Original languageEnglish
Publication statusPublished - Jun 2023
Peer-reviewedYes

Conference

Title12th International Conference on Guidance, Navigation & Control Systems & 9th International Conference on Astrodynamics Tools and Techniques
Abbreviated titleESA GNC and ICATT 2023
Duration12 - 16 June 2023
Website
Degree of recognitionInternational event
LocationSheraton Sopot
CitySopot
CountryPoland

External IDs

ORCID /0000-0001-6734-704X/work/142235785

Keywords