Very complex and flexible information structure of product representation is essential requirement to cope with firm demands for increased engineering capability and shortened innovation cycle in leading industrial practice. In order to achieve the awaited product model, improved abstraction, behavior, and active knowledge representations constitute the current trend in product lifecycle management (PLM). The Laboratory of Intelligent Engineering Systems (LIES) at the Óbuda University joined to efforts to improve self-adaptive PLM modeling ten years ago. In this paper, the request, behavior, action, and context (RBAC) structure is introduced as one of the latest results at LIES. The purpose of the RBAC structure is to collect and manage actual content for generation of elements in the requirement, functional, logical, and physical (RFLP) structure. RFLP structure was recently implemented in leading PLM systems in order to establish multidisciplinary product modeling on the demanded higher abstraction levels. This is development of PLM systems towards systems engineering (SE). This paper introduces a previously published multilevel abstraction based product definition method, its application at the development of RBAC structure, connection of RFLP and RBAC structures, and modeling methods on levels of the RBAC structure.
I.INTRODUCTION During the last two decades of the past century, key areas of engineering activities were served by partial solutions in the form of CAD, CAM, CAE, etc. systems. The new century brought essential change in engineering systems on a higher level of product information integration and management. The STEP (Standard for the Exchange of Product Model Data, ISO 10303) objectoriented product modeling principle and methodology were developed towards full feature and active knowledge representation driven product definition. The main concern is to establish feature driven modification across contextual chains of feature parameters. Product lifecycle management (PLM) systems are developed dynamically in order to cope with the increasing demand for new model representations and extensive management of product and related information including engineering decisions and their support by extensive simulations.Other recent change in PLM is to prepare multidisciplinary definition of product features on abstraction levels where product features from mechanical, electric, electronic, hardware and software disciplines are handled by integrated and unified modeling mechanism. Abstraction levels are included in product model in order to better multidisciplinary functional,
In this paper, we make an initial effort to define the scope and goals of "Cognitive Control (CoCo)", which intends to be a research initiative for bringing about a novel generation of control systems which -in a certain sensereflect the behavior of humans while solving everyday tasks. Very briefly stated, through the use of a rich inventory of available modeling techniques, control theory has achieved profound results in model-based control approaches. However, these solutions do not seem to begin to approach the true level of human intelligence. We are convinced that by the synthesis of these "tools" from a particular point of view the great efficiency of human intelligence can be integrated/fused with the complementary virtues of our machines (e.g. high computing power, fast operation, etc.), and our CoCo initiative can be realized and applied in practice.
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