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Proceedings Paper

Verifying Interfaces and generating interface control documents for the alignment and phasing subsystem of the Thirty Meter Telescope from a system model in SysML
Author(s): Sebastian J. I. Herzig; Robert Karban; Gary Brack; Scott B. Michaels; Frank Dekens; Mitchell Troy
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Paper Abstract

This paper presents a novel method for verifying interfaces and generating interface control documents (ICDs) from a system model in SysMLTM. In systems and software engineering, ICDs are key artifacts that specify the interface(s) to a system or subsystem, and are used to control the documentation of these interfaces. ICDs enable independent teams to develop connecting systems that use the specified interfaces. In the context of the Thirty Meter Telescope (TMT), interface control documents also act as contracts for delivered subsystems. The Alignment and Phasing system (APS) is one such subsystem. APS is required to implement a particular interface, and formulates requirements for the interfaces to be provided by other components of TMT that interface with APS. As the design of APS matures, these interfaces are frequently refined, making it necessary for related ICDs to be updated. In current systems engineering practice, ICDs are maintained manually. This manual maintenance can lead to a loss in integrity and accuracy of the documents over time, resulting in the documents no longer reflecting the actual state of the interfaces of a system. We show how a system model in SysMLTM can be used to generate ICDs automatically. The method is demonstrated through application to interface control documents pertaining to APS. Specifically, we apply the method to the interface of APS to the primary mirror control system (M1CS) and of APS to the Telescope Control System (TCS). We evaluate the newly introduced method through application to two case studies.

Paper Details

Date Published: 10 July 2018
PDF: 17 pages
Proc. SPIE 10705, Modeling, Systems Engineering, and Project Management for Astronomy VIII, 107050V (10 July 2018); doi: 10.1117/12.2310184
Show Author Affiliations
Sebastian J. I. Herzig, Jet Propulsion Lab., Caltech (United States)
Robert Karban, Jet Propulsion Lab., Caltech (United States)
Gary Brack, Jet Propulsion Lab., Caltech (United States)
Scott B. Michaels, Thirty Meter Telescope (United States)
Frank Dekens, Jet Propulsion Lab., Caltech (United States)
Mitchell Troy, Jet Propulsion Lab., Caltech (United States)


Published in SPIE Proceedings Vol. 10705:
Modeling, Systems Engineering, and Project Management for Astronomy VIII
George Z. Angeli; Philippe Dierickx, Editor(s)

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