New Robotic Telescope enclosure concept selection and optimisation

New Robotic Telescope enclosure concept selection and optimisation
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新型机器人望远镜外壳概念选择和优化

DOI:
10.1117/12.2629395
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发表时间:
2022
期刊:
--
影响因子:
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通讯作者:
Gradisar L
Gradisar L
中科院分区:
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作者:
Gradisar L

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新机器人望远镜(NRT)是一个机器人和完全自主的四米级望远镜,是其尺寸级别中第一个使用翻盖外壳的望远镜。它将位于西班牙加那利群岛拉帕尔马的Roque de los Muchachos天文台。快速转换时间,机器人功能和减少圆顶看到的主要原因是翻盖设计,但成本也是一个重要因素。降低成本的最大机会是外壳的可移动屋顶结构,但它是设计最复杂的部分,也是最初概念考虑中最重的部分。为了解决考虑所有限制,条件和组件的复杂优化问题,使用生成设计方法和机器学习的组合。这使我们能够克服两个主要障碍:首先,我们能够将联合收割机多个模型组合成一个优化问题,可以同时分析多个状态,如封闭和半开放状态。其次,基于机器学习的预测模型能够更快地运行,这使我们能够探索更多可能的设计解决方案。结构优化结果显示了不止一个最佳解决方案,这与多目标优化是一致的,因为在质量、容量利用率和液压力之间存在一定的权衡。结构优化的目标是在聘请建筑设计合作伙伴之前探索可能的设计方案。这使得项目开发更加高效,因为设计合作伙伴可以立即专注于施工设计工作,而无需了解望远镜的影响。
The New Robotic Telescope (NRT) is a robotic and fully autonomous four-metre-class telescope and the first in its size class to utilise a clamshell enclosure. It will be located at the Roque de los Muchachos Observatory (ORM) on La Palma, Canary Islands, Spain. Fast slew time, robotic functionality, and reduced dome seeing are the main reasons for the clamshell design, however cost is also an important factor. The greatest opportunity for cost reduction is the movable roof structure of the enclosure, but is the most complex to design and the heaviest part in the initial concept considerations. To solve a complex optimisation problem considering all limitations, conditions and assemblies, a combination of generative design approach and machine learning is used. This enables us to overcome two major obstacles: First, we are able to combine multiple models into one optimisation problem that could analyse multiple states simultaneously, such as the closed and semi-open states. Second, the machine learning-based predictive models are able to run much faster, which allows us to explore many more possible design solutions. Structural optimisation results show more than one optimal solution, which is consistent with multi-objective optimisation, since there are certain trade-offs between mass, capacity utilisation, and hydraulic forces. The goal of the structural optimisation was to explore the possible design alternatives before engaging a construction design partner. This allows for more efficient project development, as the design partner could immediately focus on the construction design work without needing to understand the implications for the telescope.
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DOI: --
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