A Framework for Controlled Self-optimisation in Modular System Architectures

Author(s):  
Werner Brockmann ◽  
Nils Rosemann ◽  
Erik Maehle
2021 ◽  
Vol 1 ◽  
pp. 1897-1906
Author(s):  
Clemens Birk ◽  
Marc Zuefle ◽  
Albert Albers ◽  
Nikola Bursac ◽  
Dieter Krause

AbstractThis paper considers the orientation of product development structures towards interdisciplinary system architectures using the example of a tool machine manufacturer. Due to the change from simple mechanical products to extensively designed systems, whose successful development requires the integration of all disciplines involved, it is analyzed which requirements there are for these interdisciplinary system architectures in today's development environment. In addition, it is validated on the basis of the investigation environment that interdisciplinary system structures are necessary for the development on the different levels of the system view. In doing so, the investigation environment addresses the concept of extracting customer-relevant features (systems) from a physical-tailored modular system (supersystem) in order to develop and test them autonomously, as well as to transfer them to the entire product range in a standardized manner. The elaboration identifies basic requirements for the development of a knowledge base in interdisciplinary system structures and places them into the context of an agile modular kit development.


Author(s):  
Andy Dong ◽  
Somwrita Sarkar ◽  
Marie-Lise Moullec ◽  
Marija Jankovic

Many important technical innovations occur through changes to existing system architectures. To manage the balance between performance gains by the innovation and the risk of change, companies estimate the degree of architectural change an innovation option could cause due to change propagation throughout the entire system. To do so, they must evaluate the innovation options for their integration cost given the present system architecture. This article presents a new algorithm and metrics based upon eigenvector rotations of the architectural connectivity matrix to assess the sensitivity of a system architecture to introduced innovations, modelled as perturbations on the system. The article presents studies of the impact of changes on synthetic system architectures to validate the method. The results show that there is no single architecture that is the most amenable to introduced innovation. Properties such as the density of existing connections and the number of changes that modify intra- or inter-module connections can introduce global effects that are not known in advance. Hierarchical modular system architectures tend to be relatively stable to introduced innovations and distributed changes to any architecture tends to cause the largest eigenvector rotations.


2017 ◽  
Vol 139 (3) ◽  
Author(s):  
Luis A. Vasconcelos ◽  
Carlos C. Cardoso ◽  
Maria Sääksjärvi ◽  
Chih-Chun Chen ◽  
Nathan Crilly

When tackling problems, designers might be inspired by different sources, whether concrete or abstract. The more concrete sources often comprise representations of potential solutions or examples of existing designs. The more abstract sources often represent the desirable properties of engineered systems, such as modular system architectures. We performed an experiment with 60 novice designers to compare the inspiration effects from these two types of stimuli. Participants were asked to solve a design problem, having been exposed to a concrete example design, an abstract system property, both, or no stimulus at all. Their design work was assessed according to four metrics: fluency, diversity, commonness, and conformity. Exposure to either the example design or the system property reduced the fluency and diversity of ideas, and exposure to both stimuli reduced these measures even further. While there was no difference in the inspiration effects from the example and the property in terms of fluency, diversity, and commonness; results for conformity showed that each stimulus constrained participants differently: encouraging ideas similar to one type of stimulus, while discouraging ideas similar to the other type. In combination with other work on inspiration and fixation, these findings can help shape how design is taught and how inspiration tools are developed.


2021 ◽  
Vol 11 (16) ◽  
pp. 7339
Author(s):  
Paul Georg Wagner ◽  
Christian Lengenfelder ◽  
Gerrit Holzbach ◽  
Maximilian Becker ◽  
Pascal Birnstill ◽  
...  

The automated documentation of work steps is a requirement of many modern manufacturing processes. Especially when it comes to important procedures such as safety critical screw connections or weld seams, the correct and complete execution of certain manufacturing steps needs to be properly supervised, e.g., by capturing video snippets of the worker to be checked in hindsight. Without proper technical and organizational safeguards, such documentation data carries the potential for covert performance monitoring to the disadvantage of employees. Naïve documentation architectures interfere with data protection requirements, and thus cannot expect acceptance of employees. In this paper we outline use cases for automated documentation and describe an exemplary system architecture of a workflow recognition and documentation system. We derive privacy protection goals that we address with a suitable security architecture based on hybrid encryption, secret-sharing among multiple parties and remote attestation of the system to prevent manipulation. We finally contribute an outlook towards problems and possible solutions with regards to information that can leak through accessible metadata and with regard to more modular system architectures, where more sophisticated remote attestation approaches are needed to ensure the integrity of distributed components.


Author(s):  
Thorsten Westermann ◽  
Harald Anacker ◽  
Roman Dumitrescu ◽  
Ursula Frank ◽  
Axel Hessenkämper

Nowadays, mechanical engineering products change from mechatronic products, characterized by the close interplay of mechanics, electronics, control and software engineering to Intelligent Technical Systems (ITS). Intelligent Technical Systems are mechatronic systems with inherent partial intelligence. Mechanical engineering products will be a symbiosis of information technology and mechanical parts. This will entail a rising complexity of technical systems and its development. Therefore we introduce an approach to improve system architectures of mechanical engineering products to realize Intelligent Technical Systems. Our approach meets the following challenges: creating a domain-spanning description of the system with Model-Based Systems Engineering (MBSE); designing an interdisciplinary and modular system architecture by using the technological concept of Intelligent Technical Systems; identifying and implementing solution elements as reusable modules. Validated by a separator, our results clarify the benefits of MBSE and the technological concept of ITS to improve system architectures of mechanical engineering products to realize Intelligent Technical Systems.


2019 ◽  
Vol 31 (4) ◽  
pp. 179-218 ◽  
Author(s):  
Giota Paparistodimou ◽  
Alex Duffy ◽  
Robert Ian Whitfield ◽  
Philip Knight ◽  
Malcolm Robb

Author(s):  
S. A. Sadovnikov

Introduction: Successful monitoring of environmental parameters requires the development of flexible software complexes with evolvable calculation functionality. Purpose: Developing a modular system for numerical simulation of atmospheric laser gas analysis. Results: Based on differential absorption method, a software system has been developed which provides the calculation of molecular absorption cross-sections, molecular absorption coefficients, atmospheric transmission spectra, and lidar signals. Absorption line contours are calculated using the Voigt profile. The prior information sources are HITRAN spectroscopic databases and statistical models of the distribution of temperature, pressure and gas components in the atmosphere. For modeling lidar signals, software blocks of calculating the molecular scattering coefficient and aerosol absorption/scattering coefficients were developed. For testing the applicability of various laser sources in the problems of environmental monitoring of the atmosphere, a concentration reconstruction error calculation block was developed for the atmospheric gas components, ignoring the interfering absorption of laser radiation by foreign gases. To verify the correct functioning of the software, a program block was developed for comparing the results of the modeling of atmospheric absorption and transmission spectra by using the standard SPECTRA information system. The discrepancy between the calculation of the atmospheric transmission spectra obtained using the developed system as compared to the SPECTRA results is less than 1%. Thus, a set of the presented program blocks allows you to carry out complex modeling of remote atmospheric gas analysis. Practical relevance: The software complex allows you to rapidly assess the possibilities of using a wide range of laser radiation sources for the problems of remote gas analysis.


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