Jerzy Pokojski

Jerzy Pokojski
Warsaw University of Technology · Institute of Machine Design Fundamentals

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31
Publications
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94
Citations

Publications

Publications (31)
Article
Cyber-Physical Systems (CPS) are systems that link cyberspace with the physical world by means of a network of interrelated elements (sensors and actuators) and computational engines. These different assets make it difficult to design properly and effectively with them all. Additionally, the designing of CPS requires multi-disciplinary project team...
Chapter
The approach presented in the paper is about the concept of a multi-criteria and multi-disciplinary tool supporting design activities while designing and developing CPS. Designers who solve CPS design problems try to build computer models, and examine, verify and validate them. Usually, these models, often created ad hoc, are very complex and large...
Article
KBE systems have been studied by researchers for about 30 years. Numerous papers have been published, approaches have been formally built and methodologies have been developed. Despite these achievements, attempts at a wider and more effective application of KBE in industry still encounter various difficulties, both in the process of creating KBE a...
Book
Full-text available
This book of proceedings contains papers that have been peer-reviewed and accepted for the 27th ISTE International Conference on Transdisciplinary Engineering, organized by Warsaw University of Technology, Poland, July 1 – 10, 2020. TE2020 has been the first conference in the series that was organized in a virtual manner due to the COVID-19 world-w...
Chapter
Full-text available
The work presents real, industrial examples of generating, developing and applying UML templates in knowledge modelling for the needs of KBE applications. The applied templates are a synthetic reflection of standard programming constructions used by teams of programmers in specific industrial conditions. Templates are created taking into account bo...
Chapter
Full-text available
The work concerns the concept of assisting software supporting the design process of a selected class of the CPS (Cyber-Physical System) – a tractor drive system. The task was carried out in a process-oriented convention. The paper presents the characteristics of individual stages of the design task – the design of the tractor transmission electron...
Article
Full-text available
The current market situation forces companies that deal with small scale, dedicated production to meet the needs and demands of their customers quickly. Usually, the products must be designed to fulfil a certain set of requirements. Additional conditions necessary to meet are also the limitations resulting from law regulations related to environmen...
Article
The paper presents an attempt of real, industrial, engineering knowledge modeling, used in a small company. The authors concentrate on the concept of personal/team knowledge repositories and tools which can support conceptual design. The performance of engineering design tasks usually concentrates on two types of activities: activities connected wi...
Article
Full-text available
In the paper product and design process modeling on the basis of speed reducer is presented. The paper proposes to build the product and process models and parallel to that carry out the project activities as these models reflect the detailed structure of the projects. The most important feature of the proposed approach is its possibility to model...
Article
The paper deals with the scenario of the development of an application in Extended Knowledge Based Engineering. This approach is based on a set of UML templates which reflect standard, software constructions usually used in actual generation of engineering software. These templates have both software and engineering design roots. The building of th...
Article
To support performance-oriented modelling for sustainable building design, one must both model geometric interdependencies in a parametric way and include non-geometric physical, environmental, and economic design reasoning. For this purpose, this paper ...
Article
The paper deals with the computer aided process of developing Knowledge Based Engineering (KBE) applications. When creating KBE applications, both the product and its design process are modeled. The main problem of building an advanced, comprehensive model of a design process is the selection of appropriate knowledge representations and implemented...
Article
The paper deals with the computer aided process of developing Knowledge Based Engineering (KBE) applications [7]. When creating KBE applications, both the product and its design process are modeled. The worked out concepts are presented in the paper. They base on an real world example developed by the authors [4, 5, 6].
Chapter
The paper concerns the modeling, acquisition, storage, management and re-using of the engineer’s knowledge. The presented approach is based on the hierarchical structure of design knowledge. Each design domain involves theories, know-how and models which are coherent (on a suitable professional level) and have been developed over many years. With t...
Book
Over more than twenty years, numerous new concepts, methodologies and tools have been developed within the context of concurrent engineering (CE). During this period, the background for engineering/manufacturing has changed extensively. Now, industry has to work with global markets. This globalization has brought forth a new network of experts and...
Book
Global Perspective for Competitive Enterprise, Economy and Ecology addresses the general theme of the Concurrent Engineering (CE) 2009 Conference – the need for global advancements in the areas of competitive enterprise, economy and ecology. The CE concept is based on the assumption that different components of the product life cycle should be con...
Conference Paper
The paper present st he basic concept so f personalk nowledge structurin g in engineering design with a computer tool known ast he personal assistant of designer. The article concentrates on the main conceptual issues ofth e proposed approach.
Chapter
Computer support for certain engineering tasks such as analysis, calculation, drafting, configuration and simulation tends to be integrated into one system where all modules are coherent. Because of that a software layer should also be capable to provide communication between modules and to keep data and knowledge visible and available for every mo...
Conference Paper
The paper presents the concept of an environment for computer support of transmission systems design equipped with the multi-criteria optimization module. The environment is limited to the class of structural problems typical for car transmission systems. The proposed architecture is based on object oriented model of multi-criteria optimization pro...
Conference Paper
The work focuses on the problem concerning the application of the KBE approach and its tools in distributed environments. The first period of applying industrial KBE systems did not only show their significant advantages but also revealed their shortcomings. This problem is especially disturbing with distributed design where the potential of commun...
Article
The paper presents the concept and the prototype implementation of integrating intelligent personal assistant approach with a multi-criteria optimization in supporting transmission systems design. The form of the computer environment on which the work is based is limited to a group of selected variants of gear box structures. All remaining models,...
Article
The paper presents a concept of knowledge based software supporting a long period machine design analysis – intelligent personal assistant. The concept of intelligent personal assistant is based on the maze model and optimisation model of the design process. The functional structure of the whole system is shown.
Article
The paper presents the method and the description of the computer code POLI-DYN for aiding the decision-making process in vehicle dynamics. The approach with finite number of alternatives is proposed (multiattribute approach). The code POLI-DYN can process the data calculated by programs for the analysis and design of mechanical systems. The code a...
Article
Questions of optimization are discussed for machine design problems. The connection between optimum for details and optimum for the system or the machine is investigated. The multilevel multicriteria optimization problem is formulated. Some multiobjective decision-making methods are presented and an approach with leading and related subproblems is...

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