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GNSS multipath error in the context of the reliability of companion robots

Krzykowska-Piotrowska Karolina, Grabka Emilia, Dudek Ewa, Rosiński Adam, Maciuk Kamil

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2024

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Vol. 72, nr 3

art. no. e149235

EN

A companion robot is capable of performing a variety of activities and thus supporting the elderly and people with disabilities. It should be able to overcome obstacles on its own, respond to what is happening around it in real time, and communicate with its surroundings. It is particularly important to pay attention to these issues, as a companion robot is likely to become a participant in traffic. The research aims to develop a mathematical model that considers the use of two navigation solutions in the companion robot. Thanks to this, it will be possible to use the obtained mathematical relationships to compare various types of navigation and make a rational choice, enabling the implementation of the assumed activities in a specific external environment. What is new in this paper is the analysis of several navigation methods and the presentation of research conducted in real time using an actual robot.

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Risk management in (air) transport with exemplary risk analysis based on the tolerability matrix

Dudek Ewa, Krzykowska-Piotrowska Karolina, Siergiejczyk Mirosław

Transport Problems

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2020

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T. 15, z. 2

143--156

EN

This article is a continuation of the authors’ study on the ways to ensure safety in the Air Traffic Management (ATM) system. It directly refers to the processes of risk management involving, in particular, risk management in (air) transport. The mai aim of this paper is to present and indicate the hazard identification and risk assessment tools that can be used in air transport and to apply one of them for a risk analysis of a specific ATM originating case. This is why, after a short introduction, describing the background of the research as well as literature review, the risk management process as such is characterized. It is shown in a schematic way and its main components are identified. At the same time, from the entire management process, the risk assessment procedure is highlighted as its most crucial part. Then, general hazards identification techniques, risk analysis and assessment tools are described, with an indication that they can also be implemented in air transport, if compatible with ICAO Standards and Recommended Practices (SARPs). In the following part, the process of risk assessment in air transport, based on the Safety Management Manual, using a safety risk tolerability matrix, is characterized. Finally, in this article, an exemplary risk analysis is carried out, focusing on a selected case arising from the ATM field. For the analysed case, safety risk hazards and their possible effects are identified and then assigned to the Intolerable, Tolerable and Acceptable regions. The entire paper is summarized and conclusions are drawn in relation to the publication’s main goal. Attention is also paid to the potential causes of appearance of hazards including, first of all, lack of adequate verification procedures, as well as people’s competence and last but not the least human errors, being the reason for 70-80% of unwanted transport accidents.

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Identification and analysis of information surplus in aeronautical systems

Kozłowski Michał, Dudek Ewa

Journal of KONBiN

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2019

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Vol. 49, iss. 1

343--368

EN

This article is a continuation of the Authors’ study on issues concerning safety of aeronautical data and information. This time, however, the main focus was placed on identification and analysis of information surplus in aeronautical systems. After a short introduction the redundant reliability structure was characterised and types of excesses used in aeronautical systems were distinguished. Special attention was paid to the title information surplus. Then, aeronautical data and information were described - the purpose and forms of their publication and the fundamental categories of aeronautical data and information were identified. In the following part of the publication, information surpluses for indicated categories of aeronautical data and information, published in various forms, were identified and the risk profile of information surplus appearance was analysed. The whole article was summed up with conclusions. Analysed issues will be the subject of Authors’ further study.

PL

Artykuł stanowi kontynuację prac autorów nad zagadnieniem szeroko rozumianego bezpieczeństwa danych i informacji lotniczych. Tym razem jednak główny nacisk położono na identyfikację i analizę nadmiaru informacyjnego w systemach lotniczych. Po krótkim wprowadzeniu scharakteryzowano nadmiarową strukturę niezawodnościową oraz wyróżniono rodzaje nadmiarów, stosowanych w systemach lotniczych, zwracając szczególną uwagę na tytułowy nadmiar informacyjny. Następnie opisano dane i informacje lotnicze - cel i formy ich publikacji oraz dokonano identyfikacji podstawowych kategorii danych i informacji lotniczych. W dalszej części pracy zidentyfikowano nadmiary informacyjne dla wyróżnionych kategorii danych i informacji lotniczych, publikowanych w różnych formach oraz przeprowadzono analizę profilu ryzyka występowania nadmiaru informacyjnego. Całość podsumowano wnioskami. Zagadnienia te będą także przedmiotem dalszych prac autorów.