Aircraft manufacturing industries are looking for solutions in order to increase their productivity. One of the solutions is to apply the metrology systems during the production and assembly processes. Metrology Proce...
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ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
Aircraft manufacturing industries are looking for solutions in order to increase their productivity. One of the solutions is to apply the metrology systems during the production and assembly processes. Metrology Process Model (MPM) (Maropoulos et al, 2007) has been introduced which emphasises metrology applications with assembly planning, manufacturing processes and product designing. Measurability analysis is part of the MPM and the aim of this analysis is to check the feasibility for measuring the designed large scale components. Measurability Analysis has been integrated in order to provide an efficient matching system. Metrology database is structured by developing the Metrology Classification Model. Furthermore, the feature-based selection model is also explained. By combining two classification models, a novel approach and selection processes for integrated measurability analysis system (MAS) are introduced and such integrated MAS could provide much more meaningful matching results for the operators.
The assembly systems need to react frequently on everyday changes like introduction of new products and variants, load variations, change of process modules, etc. In order to answer these challenges more effectively, ...
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ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
The assembly systems need to react frequently on everyday changes like introduction of new products and variants, load variations, change of process modules, etc. In order to answer these challenges more effectively, quickly, automatically and with sustainability, new methods are required. The paper proposes as one basic part of the solution a concept called Emplacement to specify, manage and use the information of process equipment in modular, reconfigurable and agile systems like Evolvable Assembly Systems. First part of the paper presents shortly the framework where the proposed concept can be applied in the phases of systems design, deployment and execution. The essential is the link between the assembled product and equipment module through the processes combining the two former. The second and main part focuses on introduction of the Emplacement concept itself. The concept has three main components Emplacement, Blue Print and History Container providing the electronic description of a module in XML based format. The first two are standardised and they provide the virtual representation of the production modules including essential information like mechatronics interfaces, capabilities i.e. skills, properties (both business and technical), CAD models, datasheets, etc. The interconnection between and details of these languages are discussed in the following chapters.
Nowadays there are several applications that use swarm robotics for solving research tasks and resource exploitation. Most of these applications are based on complex agents that require explicit communication between ...
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ISBN:
(纸本)9783642124327
Nowadays there are several applications that use swarm robotics for solving research tasks and resource exploitation. Most of these applications are based on complex agents that require explicit communication between them. These systems are difficult to introduce in certain environments because of these features, where agents can not always communicate between them and where it would be necessary a large swarm. This paper presents a swarm system for a collective resource exploitation. The main features of the agents of this system are their simplicity and they do not communicate with each other in explicit way. A microscopic model that shows the individual performance of agents has been proposed, and a macroscopic model that describes the overall swarm system has been provided. Several tests that show the convergence of the swarm towards the best resource in an Unknown environment have been analyzed.
The practice of process mining concerns the reconstruction of complete process flow diagrams from data logs. In an increasingly complex business environment, there is a need for managers to understand the processes th...
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ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
The practice of process mining concerns the reconstruction of complete process flow diagrams from data logs. In an increasingly complex business environment, there is a need for managers to understand the processes they already have in place. Process mining facilitates the automatic reconstruction of a flowchart description based on a set of execution traces. The process mining approach featured in this paper utilises a Genetic Programming approach to process mining using a graph representation. The results from a number of experiments are detailed in this paper and point to its potential as a practical tool for use in industry. The principles investigated in this approach form a core component of future research by the authors in the area of process disparity identification.
For the problem of control a planar inverted pendulum system (PIP) with non-uniform density pendulum, a design method of optimal guaranteed cost fuzzy control is developed via the parallel distributed compensation(PDC...
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ISBN:
(纸本)9783642148798
For the problem of control a planar inverted pendulum system (PIP) with non-uniform density pendulum, a design method of optimal guaranteed cost fuzzy control is developed via the parallel distributed compensation(PDC) approach. Firstly, by using the Lagrange equation, the mathematical model of the planar inverted pendulum is derived. Then, a sufficient condition for the existence of guaranteed cost fuzzy controller is presented with taking into account a given quadratic performance index, and a deviation amplitude of the center-of-mass of the rod. Finally, simulation results show the effectiveness of the proposed design method.
This paper studies organizational learning issues in groups, which can be summarized by the inherent contradiction between boosting and detecting local innovation (so that group learns from its entities) and coding, s...
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ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
This paper studies organizational learning issues in groups, which can be summarized by the inherent contradiction between boosting and detecting local innovation (so that group learns from its entities) and coding, standardizing and transferring good practices and organizational capabilities (so as group teaches its entities). This article describes some theoretical mechanisms to solve this "learner/teacher" duality. Then a digital system is proposed to manage and assess locally and globally this organizational learning, illustrated by its use in an automotive supplier group. Finally, new developments are made so as to make the learning system more sustainable.
In view of unprecedented challenges brought by ever changing, global and competitive market conditions, manufacturing industry worldwide needed to cut its costs and overheads. And there were growing demands for flexib...
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ISBN:
(数字)9783642104305
ISBN:
(纸本)9783642104299
In view of unprecedented challenges brought by ever changing, global and competitive market conditions, manufacturing industry worldwide needed to cut its costs and overheads. And there were growing demands for flexible, fast, well-planned manufacturing system design. Therefore, manufacturing systems started to move from distributed manufacturing and global manufacturing towards cross-organization e-manufacturing by using inter-connected web systems. In this paper, the definition and features of e-Manufacturing is introduced. Then, in view of the difficulties and characteristics of the aircraft tooling manufacturing, an aircraft tooling e-Manufacturing architecture based on mobile agents is proposed. And some key technologies are discussed to support this architecture. Finally, an aircraft tooling e-Manufacturing prototype system has been developed according to the aircraft tooling e-Manufacturing architecture.
Agent platforms have recently attracted attention for use as a basis for self-* systems development because it provides a mechanism for autonomous functionalities. From among these platforms, JADE allows developers to...
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ISBN:
(纸本)9783642123832
Agent platforms have recently attracted attention for use as a basis for self-* systems development because it provides a mechanism for autonomous functionalities. From among these platforms, JADE allows developers to describe concurrent behaviors on it, and this can be a foundation of constructing the multi-processes on self-* systems. This paper shows an overview of our approach for implementing highly collaborative behaviors by introducing a component style behavior model and its life cycle on the basis of the agent platform.
This paper deals with an adaptive and personalized algorithm to dynamically determine the interest of a user in a document from the observation of his behaviour during its consultation. Several existing works propose ...
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ISBN:
(纸本)9783642123832
This paper deals with an adaptive and personalized algorithm to dynamically determine the interest of a user in a document from the observation of his behaviour during its consultation. Several existing works propose an implicit feedback of user's interest from observations of his behaviours when he is reading a document. Nevertheless, the used algorithms are a priori defined and then cannot be really adapted to each user who has personal habits when he is working with the Web. This paper focuses on the generalisation of this problem and proposes a multiagent algorithm that, dynamically and according to each user's specific behaviours, computes the personal interest assessment of each of them. Several experimentations show the efficiency of this algorithm, able to self-adapt its functionality in real time when the user habits evolve, compared to existing methods.
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