Mr. Michele Zamparelli Profile

Michele Zamparelli

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Publications (6)

Proceedings Article | 10 July 2018 Presentation + Paper

The OpenSE Cookbook: a practical, recipe based collection of patterns, procedures, and best practices for executable systems engineering for the Thirty Meter Telescope

Robert Karban, Amanda Crawford, Gelys Trancho, Michele Zamparelli, Sebastian Herzig, Ivan Gomes, Marie Piette, Eric Brower

Proceedings Volume 10705, 107050W (2018) https://doi.org/10.1117/12.2312281

KEYWORDS: Systems modeling, Systems engineering, Thirty Meter Telescope, Monte Carlo methods, Error analysis, Observatories, Reverse modeling, Model-based design, Adaptive optics, Wavefronts

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The OpenSE Cookbook is an open-sourced collection of patterns, procedures, and best practices targeted for systems engineers who seek guidance on applying model-based and executable systems engineering (MBSE) using SysML. Its content has emerged from the system level modeling effort on the European Framework Program 6 (FP6) and the Thirty Meter Telescope (TMT). The TMT MBSE approach applied the Executable Systems Engineering Method (ESEM) and the open-source Engineering Environment (OpenMBEE) to specify, analyze, and verify requirements of TMT’s Alignment and Phasing System (APS) and the Narrow Field Infrared Adaptive Optics System (NFIRAOS). In these applications, implicit dependencies are made explicit in a formal model through the use of ESEM, OpenMBEE, and SysML modeling constructs. The value proposition for applying this MBSE approach was to establish precise requirements and fine-grained traceability to system designs, and to verify key requirements beginning early in development. The integration of ESEM and the OpenMBEE tooling infrastructure (providing linked-data and web-operability) is a significant added value for the MBSE approach. The APS is responsible for the overall pre-adaptive optics wavefront quality, using starlight to measure wavefront errors and align the TMT optics. In the formally integrated and executable SysML model, simulations are performed to analyze the impact of changed requirements and verify specified constraints for various operational scenarios.

The APS team used several modeling patterns to capture information such as the requirements, the operational scenarios, involved subsystems and their interaction points, the estimated or required time durations, and the mass and power consumption. Adaptive optics systems are designed to sense real-time atmospheric turbulence and correct the telescope’s optical beam to remove its effect. The system model for the adaptive optics operational modes was developed to capture sequence behaviors and operational scenarios to run Monte-Carlo simulations for verifying acquisition time, observing efficiency, and operational behavior requirements. The model is particularly useful for investigating the effect of parallelization, identifying interface issues, and re-ordering sequence acquisition tasks. A former version of the Cookbook (which is now updated to MBSE challenges, goals, and lessons learned) included modeling guidelines and conventions for all system aspects, hierarchy levels, and views, which were developed during for the Active Phasing Experiment (APE), an opto-mechatronical system technology demonstrator for the Extremely Large Telescope (ELT). The Cookbook utilizes the above mentioned system models as real-world case-studies to demonstrate and document the applications of the recipes, providing also instructional examples and addressing the available tooling support. The Cookbook is accompanied by a number of SysML models and aodel libraries which facilitate model authoring and maintenance. The Cookbook covers the different aspects of Systems Engineering such as management of Requirements, Design (behavior and structure), Interfaces, Interdisciplinary Integration, Analysis, Trade Studies, and Technical Resources. This paper presents the background, motivation, architecture, and highlights some key content of the Cookbook. For example, interface management, error budget management, requirements verification, Monte Carlo driven analysis, and timing analysis of operational scenarios. The paper discusses how the capabilities of OpenMBEE contributed significantly to the adoption of executable systems engineering.

Proceedings Article | 6 July 2018 Paper

Designing and managing software interfaces for the ELT

Gianluca Chiozzi, Luigi Andolfato, Mario Kiekebusch, Nick Kornweibel, Marcus Schilling, Michele Zamparelli

Proceedings Volume 10707, 1070725 (2018) https://doi.org/10.1117/12.2312175

KEYWORDS: Control systems, Interfaces, Systems modeling, Safety, Databases, Data modeling, Telescopes, Mirrors, Process modeling

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Proceedings Article | 4 August 2014 Paper

Model based systems engineering for astronomical projects

R. Karban, L. Andolfato, P. Bristow, G. Chiozzi, M. Esselborn, M. Schilling, C. Schmid, H. Sommer, M. Zamparelli

Proceedings Volume 9150, 91500L (2014) https://doi.org/10.1117/12.2055540

KEYWORDS: Systems modeling, Systems engineering, Control systems, Telescopes, Control systems design, Astronomy, Instrument modeling, Interfaces, Wavefronts, Visual process modeling

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Proceedings Article | 18 July 2014 Paper

PC based PLCs and ethernet based fieldbus: the new standard platform for future VLT instrument control

Mario Kiekebusch, Christian Lucuix, Toomas Erm, Gianluca Chiozzi, Michele Zamparelli, Lothar Kern, Roland Brast, Werther Pirani, Roland Reiss, Dan Popovic, Jens Knudstrup, Michel Duchateau, Stefan Sandrock, Nicola Di Lieto

Proceedings Volume 9152, 915207 (2014) https://doi.org/10.1117/12.2056648

KEYWORDS: Photonic integrated circuits, Standards development, Control systems, Motion controllers, Computer programming, Clocks, Interfaces, Commercial off the shelf technology, Astronomy, Computer programming languages

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Proceedings Article | 9 July 2008 Paper

Exploring model based engineering for large telescopes: getting started with descriptive models

R. Karban, M. Zamparelli, B. Bauvir, B. Koehler, L. Noethe, A. Balestra

Proceedings Volume 7017, 70171I (2008) https://doi.org/10.1117/12.788739

KEYWORDS: Systems modeling, Control systems, Telescopes, Systems engineering, Safety, Performance modeling, Sensors, Reverse modeling, Large telescopes, Mirrors

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Proceedings Article | 12 June 2006 Paper

Using a formal requirements management tool for system engineering: first results at ESO

Michele Zamparelli

Proceedings Volume 6271, 62710D (2006) https://doi.org/10.1117/12.670281

KEYWORDS: Databases, Systems engineering, Diagnostics, Information technology, Standards development, Astronomy, Document management, Software development, Telescopes, Computing systems

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