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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.07376 |
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| _version_ | 1866909374184685568 |
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| author | Cachim, Pedro Kraus, Will Manchester, Zachary Lourenco, Pedro Ventura, Rodrigo |
| author_facet | Cachim, Pedro Kraus, Will Manchester, Zachary Lourenco, Pedro Ventura, Rodrigo |
| contents | Recent spacecraft mission concepts propose larger payloads that have lighter, less rigid structures. For large lightweight structures, the natural frequencies of their vibration modes may fall within the attitude controller bandwidth, threatening the stability and settling time of the controller and compromising performance. This work tackles this issue by proposing an attitude control design paradigm of distributing momentum actuators throughout the structure to have more control authority over vibration modes. The issue of jitter disturbances introduced by these actuators is addressed by expanding the bandwidth of the attitude controller to suppress excess vibrations. Numerical simulation results show that, at the expense of more control action, a distributed configuration can achieve lower settling times and reduce structural deformation compared to a more standard centralized configuration. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_07376 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Optimal Attitude Control of Large Flexible Space Structures with Distributed Momentum Actuators Cachim, Pedro Kraus, Will Manchester, Zachary Lourenco, Pedro Ventura, Rodrigo Instrumentation and Methods for Astrophysics Systems and Control Recent spacecraft mission concepts propose larger payloads that have lighter, less rigid structures. For large lightweight structures, the natural frequencies of their vibration modes may fall within the attitude controller bandwidth, threatening the stability and settling time of the controller and compromising performance. This work tackles this issue by proposing an attitude control design paradigm of distributing momentum actuators throughout the structure to have more control authority over vibration modes. The issue of jitter disturbances introduced by these actuators is addressed by expanding the bandwidth of the attitude controller to suppress excess vibrations. Numerical simulation results show that, at the expense of more control action, a distributed configuration can achieve lower settling times and reduce structural deformation compared to a more standard centralized configuration. |
| title | Optimal Attitude Control of Large Flexible Space Structures with Distributed Momentum Actuators |
| topic | Instrumentation and Methods for Astrophysics Systems and Control |
| url | https://arxiv.org/abs/2410.07376 |