scholarly journals The role of the instrument control unit within the ARIEL Payload and its current design

2020 ◽  
Author(s):  
Luca Naponiello ◽  
Vladimiro Noce ◽  
Mauro Focardi ◽  
Anna Maria Di Giorgio ◽  
Giampaolo Preti ◽  
...  
Keyword(s):  
Control Unit ◽  
Current Design ◽  
Instrument Control

scholarly journals ARINC653 Channel Robustness Verification Using LeonViP-MC, a LEON4 Multicore Virtual Platform

Electronics ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 1179
Author(s):  
Jonatan Sánchez ◽  
Antonio da Silva ◽  
Pablo Parra ◽  
Óscar R. Polo ◽  
Agustín Martínez Hellín ◽  
...  
Keyword(s):  
Fault Tolerance ◽  
Architectural Design ◽  
Fault Injection ◽  
Control Unit ◽  
Tolerance Mechanisms ◽  
Efficient Data ◽  
Instrument Control ◽  
Virtual Platform ◽  
Hardware Platforms ◽  
The University

Multicore hardware platforms are being incorporated into spacecraft on-board systems to achieve faster and more efficient data processing. However, such systems lead to increased complexity in software development and represent a considerable challenge, especially concerning the runtime verification of fault-tolerance requirements. To address the ever-challenging verification of this kind of requirement, we introduce a LEON4 multicore virtual platform called LeonViP-MC. LeonViP-MC is an evolution of a previous development called Leon2ViP, carried out by the Space Research Group of the University of Alcalá (SRG-UAH), which has been successfully used in the development and testing of the flight software of the instrument control unit (ICU) of the energetic particle detector (EPD) on board the Solar Orbiter. This paper describes the LeonViP-MC architectural design decisions oriented towards fault-injection campaigns to verify software fault-tolerance mechanisms. To validate the simulator, we developed an ARINC653 communications channel that incorporates fault-tolerance mechanisms and is currently being used to develop a hypervisor level for the GR740 platform.

The instrument control unit of SPICA SAFARI: a macro-unit to host all the digital control functionalities of the spectrometer

2012 ◽  
Author(s):  
Anna Maria Di Giorgio ◽  
David Biondi ◽  
Bortolino Saggin ◽  
Irina Shatalina ◽  
Maurizio Viterbini ◽  
...  
Keyword(s):  
Digital Control ◽  
Control Unit ◽  
Instrument Control

scholarly journals Development of Embedded Boot Software for a Satellite Instrument Control Unit: Lessons Learned

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Jesús Fernández-Conde ◽  
Jaime Gómez-Saez-de-Tejada ◽  
David Pérez-Lizán ◽  
Rafael Toledo-Moreo
Keyword(s):  
Real Time ◽  
European Space Agency ◽  
Control Unit ◽  
Lessons Learned ◽  
System Failure ◽  
Application Software ◽  
Satellite Mission ◽  
Space Agency ◽  
Expected Performance ◽  
Instrument Control

A satellite spacecraft is generally composed of a central Control and Data Management Unit (CDMU) and several instruments, each one locally controlled by its Instrument Control Unit (ICU). Inside each ICU, the embedded boot software (BSW) is the very first piece of software executed after power-up or reset. The ICU BSW is a nonpatchable, stand-alone, real-time software package that initializes the ICU HW, performs self-tests, and waits for CDMU commands to maintain on-board memory and ultimately start a patchable application software (ASW), which is responsible for execution of the nominal tasks assigned to the ICU (control of the satellite instrument being the most important one). The BSW is a relatively small but critical software item, since an unexpected behaviour can cause or contribute to a system failure resulting in fatal consequences such as the satellite mission loss. The development of this kind of embedded software is special in many senses, primarily due to its criticality, real-time expected performance, and the constrained size of program and data memories. This paper presents the lessons learned in the development and HW/SW integration phases of a satellite ICU BSW designed for a European Space Agency mission.

The instrument control unit of the ESA-PLATO 2.0 mission

2016 ◽  
Author(s):  
M. Focardi ◽  
S. Pezzuto ◽  
R. Cosentino ◽  
G. Giusi ◽  
M. Pancrazzi ◽  
...  
Keyword(s):  
Control Unit ◽  
Instrument Control

Simulations of Engagement Control in Actuated Dry-Clutch: Influence of Frictional Response of Facing Materials

2017 ◽  
Vol 868 ◽  
pp. 15-20
Author(s):  
Adolfo Senatore ◽  
Carmine D'Auria ◽  
Mario Pisaturo
Keyword(s):  
Frictional Coefficient ◽  
Control Unit ◽  
Interface Temperature ◽  
Temperature Estimation ◽  
Start Up ◽  
Clutch Engagement ◽  
Dry Clutch ◽  
Effective Models ◽  
And Control

This paper focuses on the simulation of clutch engagement behavior in automated manual transmissions (AMTs) to virtualize the vehicle start-up maneuver through implementation of the driveline model and the role of transmission control unit featuring different levels of knowledge regarding to clutch material frictional response. Simulation results underline the crucial requirement of accurate prediction of the frictional coefficient evolution in each clutch maneuver, particularly regarding to the interface temperature estimation to develop effective models and control algorithms.

scholarly journals DILEMA INDEPENDENSI AUDITOR SATUAN PENGAWASAN INTERNAL PERGURUAN TINGGI: STUDI FENOMENOLOGI

2019 ◽  
Vol 19 (1) ◽  
pp. 111
Author(s):  
Syarif Syahrir Malle ◽  
Alimudidin Alimudidin ◽  
Nirwana Nirwana
Keyword(s):  
Higher Education ◽  
Work Environment ◽  
Internal Control ◽  
Control Unit ◽  
Education Institution ◽  
The Other ◽  
Non Profit ◽  
Internal Auditors ◽  
Interpretive Paradigm

<p><em>This research is motivated by a "unique" phenomenon from of the role of the profession internal auditors. For </em><em>Internal </em><em>auditors </em><em>of  Internal Control Unit </em><em>(SPI) in</em><em> a non-profit organization, especially in an</em><em> </em><em>Higher Education Institution</em><em>, the uniqueness has the potential to place it in a situation of independence dilemma. The purpose of this study is to understand the reality of the independence dilemma faced by SPI auditors as a result of the conditions and work environment. In order to explore the auditor's understanding of SPI, phenomenology is employed as methodology, under interpretive paradigm as the umbrella of this research. Exploration of understanding and awareness is done using Epoche. The results of the study revealed that the SPI auditor faced a situation of independence in various forms: (1) the negative auditing stigma in the form of the awarding of "kambing hitam" to SPI raises a dilemma for auditors and disturbs the working spirit of the SPI auditor, on the other hand if implemented improperly will be contrary to the obligation and further aggravate the negative stigma already attached; (2) there is a phenomenon of impropriety (abuse) on audit guidelines that has not been fully implemented and not evaluated to provide ethical consideration in the future; (3) the existence of obedience pressure in the form of "suspension" the rector signs the SPI examination report</em><em>.</em><em> </em><em>d</em><em>ue to the term audit conception that has not been agreed upon. </em></p>

scholarly journals Phronetic Ethics in Social Robotics: A New Approach to Building Ethical Robots

2020 ◽  
Vol 63 (1) ◽  
pp. 165-183
Author(s):  
Paweł Polak ◽  
Roman Krzanowski
Keyword(s):  
Autonomous Robots ◽  
Social Robotics ◽  
High Level Architecture ◽  
Ceteris Paribus ◽  
New Approach ◽  
Moral Agents ◽  
Current Design ◽  
Human Ethics ◽  
High Level

Abstract Social robotics are autonomous robots or Artificial Moral Agents (AMA), that will interact respect and embody human ethical values. However, the conceptual and practical problems of building such systems have not yet been resolved, playing a role of significant challenge for computational modeling. It seems that the lack of success in constructing robots, ceteris paribus, is due to the conceptual and algorithmic limitations of the current design of ethical robots. This paper proposes a new approach for developing ethical capacities in robotic systems, one based on the concept of Aristotelian phronesis. Phronesis in principle reflexes closer human ethics than the ethical paradigms we employ today in ethical robotics. This paper describes the essential features of phronesis and proposes a high-level architecture for implementing phronetic principles in autonomous robots. Phronetic robotics is in its early stages of conceptualization, so many of the presented ideas are speculative and require further research.2

Conceptual design of the X-IFU Instrument Control Unit on board the ESA Athena mission

2016 ◽  
Author(s):  
L. Corcione ◽  
S. Ligori ◽  
V. Capobianco ◽  
D. Bonino ◽  
L. Valenziano ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Control Unit ◽  
Instrument Control
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