This paper introduces a new dynamic availability-aware survivable routing scheme under the framework of generalized multi-protocol label switching (GMPLS)-based recovery, which aims to achieve the best generality for ...
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This paper introduces a new dynamic availability-aware survivable routing scheme under the framework of generalized multi-protocol label switching (GMPLS)-based recovery, which aims to achieve the best generality for the network operation in meeting the end-to-end (E2E) availability requirement of each connection. The paper first defines the partial restorability, justifies the feasibility of equipping a connection with partial restorability under the GMPLS control plane, and highlights the approach of evaluating the E2E availability for a pair of working and partially restorative SRG (shared risk group)-disjoint shared backup label switched paths (LSPs). A compact matrix expression is developed for modeling the minimum spare capacity along each link and the cost function for solving both of the paths. Based on the developed cost function, a novel integer linear program (ILP) is formulated to dynamically determine the working and backup LSPs of the corresponding connection request with the least amount of total capacity while the E2E availability requirement of the connection is met. We demonstrate that the model is general to the traffic uniformity, connection indivisibility, and working bandwidth restorability compared with the previous studies. Simulation is conducted to verify the proposed ILP model by making a comparison with a number of legacy schemes that achieve 100% restorability in facing a specific number of simultaneous failures, such as shared path protection (SPP), 1+1 protection, and dual-failure protection. In the case study, we have seen merits in the proposed algorithm by significantly reducing the required redundancy in the effort of achieving the given availability constraint for each connection request.
The first part of this paper describes the development of a humanoid robot hand based on an endoskeleton made of rigid links connected with elastic hinges, actuated by sheath routed tendons and covered by continuous c...
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ISBN:
(纸本)078038914X
The first part of this paper describes the development of a humanoid robot hand based on an endoskeleton made of rigid links connected with elastic hinges, actuated by sheath routed tendons and covered by continuous compliant pulps. The project is called UB Hand 3 (University of Bologna Hand, 3rd version) and aims to reduce the mechanical complexity of robotic end effectors yet maintaining full anthropomorphic aspect and a good level of dexterity. In the second part this paper focuses on the early experiences of the UB Hand 3 in performing manipulation tasks.
The proceedings contain 142 papers. The topics discussed include: real-time middleware for the requirements of distributed process control;mobile information processing incorporating location-based services;architectu...
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ISBN:
(纸本)0780390946
The proceedings contain 142 papers. The topics discussed include: real-time middleware for the requirements of distributed process control;mobile information processing incorporating location-based services;architecture for automation system development based on IEC61499 standard;function Block applications based on an object oriented middleware;the JAKOBI architecture - A distributed dynamic execution environment in Java;development of a data pre-processing scheme and pluggable application modules for an intelligent equipment prognostics system;integrative approach of Web services and universal plug and play within an AV scenario;ontology-based context management components for service oriented architectures on wearable devices;and automated runtime management of embedded service systems based on design-time modeling and model transformation.
The growing complexity of today39;s embedded real-time systems demands new methods and tools to manage the problems of design, analysis, integration, and validation of complex systems. Focusing this issue, the prese...
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New fast moving markets demand flexible, adaptable production facilities to allow manufacturing companies a fast reaction on consumer needs. Reconfigurable manufacturing systems provide a solution for these problems. ...
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High-level intelligence allows a mobile robot to create and interpret complex world models, but without a precise control system, the accuracy of the world model and the robot39;s ability to interact with its surrou...
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ISBN:
(纸本)9789806560468
High-level intelligence allows a mobile robot to create and interpret complex world models, but without a precise control system, the accuracy of the world model and the robot's ability to interact with its surroundings are greatly diminished. This problem is amplified when the environment is hostile, such as in a battlefield situation where an error in movement or a slow response may lead to destruction of the robot. As the presence of robots on the battlefield continues to escalate and the trend toward relieving the human of the low-level control burden advances, the ability to combine the functionalities of several critical control systems on a single platform becomes imperative.
The following topics are dealt with: distributed process control; industrial automation; industrial control; supply chain; process automation; electronic commerce; protocols; image processing; security of data; robots...
The following topics are dealt with: distributed process control; industrial automation; industrial control; supply chain; process automation; electronic commerce; protocols; image processing; security of data; robots; distributed processing; mobile communication.
This paper shows a methodology for on-line recognition and classification of pieces in robotic assembly tasks and its application into an intelligent manufacturing cell. The performance of industrial robots working in...
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ISBN:
(纸本)9789806560468
This paper shows a methodology for on-line recognition and classification of pieces in robotic assembly tasks and its application into an intelligent manufacturing cell. The performance of industrial robots working in unstructured environments can be improved using visual perception and learning techniques The object recognition is accomplished using a neuronal network with Fuzzy ARTMAP architecture for learning and recognition purposes, which receives a descriptor vector called CFD&POSE as the input. This vector represents an innovative methodology for classification and identification of pieces in robotic tasks, every single stage of the methodology, is described step by step and the proposed algorithms explained. The vector compresses 3D object data from assembly parts and is invariant to scale, rotation and orientation. The approach in combination with the fast learning capability of ART networks indicates the suitability for industrial robot applications as it is shown in experimental results.
Superseding voice and vision recognition systems, a brand new systematical method of tactile recognition, which gives robots 39;tactile sense39;, is proposed. Based on the two basic data of robotics, namely positi...
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Superseding voice and vision recognition systems, a brand new systematical method of tactile recognition, which gives robots 'tactile sense', is proposed. Based on the two basic data of robotics, namely position and force data, this new method analyzes the characteristics of each object in a systematic way and categorizes them quantitatively based on these characteristic parameters. For instance, this system can tell which organ the robot is touching with a sensitivity that is as good or better than experienced doctors. This system also allows robots to automatically adjust forces according to an object's material properties such as hardness or fragility thereby enhancing the safety of the technique. Providing new human-like 'senses' to robots, this system would increase the long term viability of robotics.
The function block (FB) construct has been adopted by recent IEC standards for the design of reusable, interoperable, distributed control applications. Complete applications can be defined in the design level as netwo...
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The function block (FB) construct has been adopted by recent IEC standards for the design of reusable, interoperable, distributed control applications. Complete applications can be defined in the design level as networks of interconnected FB instances. In this paper an execution environment for FB-based distributed control applications is presented. The proposed environment favors the deployment and re-deployment of complex distributed control applications and provides the infrastructure that is required to satisfy real-time constraints for this application domain. Specific tools have been developed in the context of the model integrated mechatronics paradigm, to support the automatic code generation of implementation models from FB design models as well as their subsequent deployment on the proposed execution environment. Performance metrics prove the real-timeliness of the implemented environment.
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