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首页> 外文会议>Conference on Interferometry in Space Pt.1, Aug 26-28, 2002, Waikoloa, Hawaii, USA >Interferometer Real Time Control Development for SIM
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Interferometer Real Time Control Development for SIM

机译：SIM干涉仪实时控制开发

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Real Time Control (RTC) for the Space Interferometry Mission will build on the real time core interferometer control technology under development at JPL since the mid 1990s, with heritage from the ground based MKII and Palomar Testbed Interferometer projects developed in the late '80s and early '90s. The core software and electronics technology for SIM interferometer real time control is successfully operating on several SIM technology demonstration testbeds, including the Real-time Interferometer Control System Testbed, System Testbed-3, and the Microarcsecond Metrology testbed. This paper provides an overview of the architecture, design, integration, and test of the SIM flight interferometer real time control to meet challenging flight system requirements for the high processor throughput, low-latency interconnect, and precise synchronization to support microarcsecond-level astrometric measurements for greater than five years at 1 AU in Earth-trailing orbit. The electronics and software architecture of the interferometer real time control core and its adaptation to a flight design concept are described. Control loops for pointing and pathlength control within each of four flight interferometers and for coordination of control and data across interferometers are illustrated. The nature of onboard data processing to fit average downlink rates while retaining post-processed astrometric measurement precision and accuracy is also addressed. Interferometer flight software will be developed using a software simulation environment incorporating models of the metrology and starlight sensors and actuators to close the real tune control loops. RTC flight software and instrument flight electronics will in turn be integrated utilizing the same simulation architecture for metrology and starlight component models to close real tune control loops and verify RTC functionality and performance prior to delivery to flight interferometer system integration at Lockheed Martin's Sunnyvale facility. A description is provided of the test environment architecture supporting the RTC path to flight.
机译：空间干涉测量任务的实时控制（RTC）将基于1990年代中期以来JPL正在开发的实时核心干涉仪控制技术，并继承了80年代末至80年代初期开发的地面MKII和Palomar测试台干涉仪项目90年代。 SIM干涉仪实时控制的核心软件和电子技术已在多个SIM技术演示测试平台上成功运行，包括实时干涉仪控制系统测试平台，System Testbed-3和微弧度计量测试平台。本文概述了SIM飞行干涉仪实时控制的体系结构，设计，集成和测试，以满足对高处理器吞吐量，低延迟互连和精确同步的挑战性飞行系统要求，以支持微弧级天体测量在地球追迹轨道上的1 AU时超过五年。描述了干涉仪实时控制核心的电子和软件架构及其对飞行设计概念的适应性。示出了用于在四个飞行干涉仪中的每一个内的指向和光程控制以及用于跨干涉仪的控制和数据的协调的控制环。还解决了机载数据处理的性质，以适应平均下行链路速率，同时保留后处理的天文测量精度和准确性。干涉仪飞行软件将使用软件仿真环境进行开发，该软件仿真环境将结合计量模型，星光传感器和执行器以闭合实际的调谐控制回路。反过来，RTC飞行软件和仪表飞行电子设备也将利用相同的计量和星光组件模型仿真架构进行集成，以关闭真实的调谐控制环路，并在交付洛克希德·马丁公司位于桑尼维尔的飞行干涉仪系统之前，验证RTC的功能和性能。提供了支持RTC飞行路线的测试环境架构的描述。

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