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首页> 外文会议>Workshop on Integrated Modeling of Telescopes, Feb 5-7, 2002, Lund, Sweden >Flexible Body Control of the Airborne Telescope SOFIA
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Flexible Body Control of the Airborne Telescope SOFIA

机译：机载望远镜SOFIA的灵活机身控制

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Airborne telescopes have, compared with earthbound or space telescopes, by far the most worse environment during operations. They must not only deal with aircraft vibrations, but also with large temperature differences and aero-acoustic loads including standing waves. System simulations are particularly useful for verifying the design performance in this environment. They should include the behavior of the overall opto-mechanical system, the environmental loads and the pointing control system itself. SOFIA ― the "Stratospheric Observatory for Infrared Astronomy" ― is a 2,7 m infrared telescope in an open cavity of a Boeing 747 aircraft. At present the telescope is under construction in the MAN premises in Augsburg. Simulations during the design phase of the telescope showed, that there are resonance effects in the telescope excited by the cavity acoustics. The excitations disturb the pointing behavior above the allowances. This paper describes, how the overall system was simulated, how the resonance modes will be compensated by "flexible body control", and how the pointing control system will be finally optimized during test flights in an pointing improvement phase.
机译：与地上或太空望远镜相比，机载望远镜在操作过程中是迄今为止最恶劣的环境。它们不仅必须应对飞机的振动，而且还必须应对较大的温差和包括驻波在内的空气声载荷。系统仿真对于验证这种环境下的设计性能特别有用。它们应包括整个光机械系统的行为，环境负荷和指向控制系统本身。 SOFIA（“红外天文学平流层天文​​台”）是一架2.7 m红外望远镜，位于一架波音747飞机的开放腔中。目前，该望远镜正在奥格斯堡的MAN办公场所内施工。在望远镜设计阶段的仿真表明，由于腔内声学的激发，望远镜中存在共振效应。激发干扰了超出容限的指向行为。本文介绍了如何模拟整个系统，如何通过“灵活的车身控制”补偿共振模式，以及如何在指向改进阶段的试飞过程中最终优化指向控制系统。

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