8 research outputs found
Distribution of machine information using Blackboard designed component for remote monitoring of reconfigurable manufacturing systems
A blackboard-based design for a system component called the "Broadcaster" is described in this paper. It supports remote monitoring of reconfigurable manufacturing systems using a novel system architecture coupled with the Component-Based system paradigm. The design of this component has been evaluated using a case study on a web services-enabled test rig funded by the Ford Motor Company, U. K. The test rig has been implemented using a fully distributed control device called FTB, designed by the Schneider Electric Company. Evaluation of this component has been carried out using three scenario test cases which demonstrate the potentials offered when deploying this solution to a real production environment. The system component not only operates in a heterogeneous reconfigurable manufacturing environment, offering a vendor-independent solution to monitoring machines, but it also supports remote monitoring of the machines throughout their development and management lifecycles
“Broadcaster”: An architectural description of a prototype supporting real-time remote data propagation in distributed manufacturing
Globalisation of manufacturing activities tend to geographically distribute manufacturing entities, resulting into each entity adopting its own mechanism, for aggregating and analysing real-time shop floor machines' information. The enterprise systems normally employ sophisticated and computationally expensive techniques to access this data, even if they operate remotely having limited network connectivity and system legacies. There is a need to propagate machine information in soft real-time basis to these entities regardless of their geographic locations and / or mechanisms. Authors are presenting an architectural description of a prototype system called the ldquoBroadcasterrdquo which efficiently distributes manufacturing machine information to a number of remotely located global engineering partners. This prototype addresses the emergent system issues like maintainability, reliability, integrity, robustness, flexibility and performance using a heterogeneous composition of ldquoBlackboardrdquo repository model with an event-driven invocation technique, implemented using interface-based strategy. The design and implementation assumes the control environment description to be engineered using the component-based system paradigm. Presently, the prototype is evaluated on a demonstration test rig provided by the Ford Motor Company, which is implemented using a fully Web services distributed control device called FTB, designed by the Schneider Electric Company. Based on the evaluation from the implementation stage, authors have justified and concluded the paper highlighting the key benefits of this approach, and described any future research that is to be carried out
“Broadcaster”: An architectural description of a prototype supporting real-time remote data propagation in distributed manufacturing
Globalisation of manufacturing activities tend to geographically distribute manufacturing entities, resulting into each entity adopting its own mechanism, for aggregating and analysing real-time shop floor machines' information. The enterprise systems normally employ sophisticated and computationally expensive techniques to access this data, even if they operate remotely having limited network connectivity and system legacies. There is a need to propagate machine information in soft real-time basis to these entities regardless of their geographic locations and / or mechanisms. Authors are presenting an architectural description of a prototype system called the ldquoBroadcasterrdquo which efficiently distributes manufacturing machine information to a number of remotely located global engineering partners. This prototype addresses the emergent system issues like maintainability, reliability, integrity, robustness, flexibility and performance using a heterogeneous composition of ldquoBlackboardrdquo repository model with an event-driven invocation technique, implemented using interface-based strategy. The design and implementation assumes the control environment description to be engineered using the component-based system paradigm. Presently, the prototype is evaluated on a demonstration test rig provided by the Ford Motor Company, which is implemented using a fully Web services distributed control device called FTB, designed by the Schneider Electric Company. Based on the evaluation from the implementation stage, authors have justified and concluded the paper highlighting the key benefits of this approach, and described any future research that is to be carried out
HELCATS HCME_WP2_V03
<p>The FP7 Heliospheric Cataloguing, Analysis and Technique Service (HELCATS) project capitalises on European expertise in heliospheric imaging built up over the last decade, particularly by lead involvement in NASA’s STEREO mission, whilst also exploiting the vast wealth of long established European expertise in such areas as solar and coronal imaging, as well as the interpretation of in-situ and radio measurements of solar wind phenomena.</p><p>The HCME_WP2 is a catalogue of manually identified CME events observed by the STEREO A and B heliospheric imaging cameras. This catalogue underpins the other work within the project by providing a complete list of CMEs detected by HI. These are then assessed and modelled using different techniques as part of other work packages within the project.</p><p>Version 05 of this catalogue is the latest formal release and covers the period from April 2007 to September 2017. Event IDs are tied to the corresponding event and will not change in future versions even if events are added or removed.</p
HELCATS WP3 CME KINEMATICS CATALOGUE
<div>The FP7 Heliospheric Cataloguing, Analysis and Technique Service (HELCATS) project capitalises on European expertise in heliospheric imaging built up over the last decade, particularly by lead involvement in NASA’s STEREO mission, whilst also exploiting the vast wealth of long established European expertise in such areas as solar and coronal imaging, as well as the interpretation of in-situ and radio measurements of solar wind phenomena.<br></div><div><br></div><div>The CME kinematics catalogue HIGeoCat builds on the HCME_WP2 identified CME list <a href="https://doi.org/10.6084/m9.figshare.5803152.v1">https://doi.org/10.6084/m9.figshare.5803152.v1</a>.</div><div>Where possible, time elongation tracks are</div><div>extracted for each CME along a defined position angle corresponding approximately to the apex of the CME. Single spacecraft geometric fitting techniques (see Davies et al., 2012; doi:10.1088/0004-637X/777/2/167) are used to determine the kinemtatic properties (direction, speed and launch time) for three dierent simple assumptions of the CME morphology. The result is a</div><div>super-set of the HCME_WP2 catalogue containing both the observed parmeters and the derived kinematics. </div><div><br></div><div>This is version: 05 of the catalogue, released 2018-01-19. (DOI: <a rel="noreferrer noopener" target="_blank">10.6084/m9.figshare.5803176</a>). The catalogue is based on version 5 of the WP2 catalog (DOI: 10.6084/m9.figshare.5803152) . The latest version includes events to end of September 2017 on Stereo-A. Note that there is an approximately 1 year gap in Stereo-A data from October 2014 while the spacecraft was behind the Sun. Data from Stereo-B is not available after Septmeber 2014 since contact with the spacecraft has not yet been re-established.</div
HELCATS HCME_WP2_V02
<p>The FP7 Heliospheric Cataloguing, Analysis and Technique Service (HELCATS) project capitalises on European expertise in heliospheric imaging built up over the last decade, particularly by lead involvement in NASA’s STEREO mission, whilst also exploiting the vast wealth of long established European expertise in such areas as solar and coronal imaging, as well as the interpretation of in-situ and radio measurements of solar wind phenomena.</p>
<p>The HCME_WP2 is a catalogue of manually identified CME events observed by the STEREO A and B heliospheric imaging cameras. This catalogue underpins the other work within the project by providing a complete list of CMEs detected by HI. These are then assessed and modelled using different techniques as part of other work packages within the project.</p>
<p>Version 02 of this catalogue is the first formal release and covers the period from April 2007 to December 2013. Event IDs are tied to the corresponding event and will not change in future versions even if events are added or removed.</p
Predicted arrivals of solar storms at planets and spacecraft 2007-2014 with STEREO
This is a visualization of the predicted impacts of solar storms observed with the STEREO heliospheric imagers covering 2007-2014, at a 3 hour time resolution. <div><br></div><div>It shows planets (filled circles) and spacecraft (filled squares) projected in the solar equatorial plane, in colors as indicated at the bottom. Large red (blue) circles are CMEs moving at constant propagation speed, with constant direction and constant angular width of 60°, modeled after observations by STEREO-Ahead (STEREO-Behind). </div><div><br></div><div>At an impact time, a circle with the color of the spacecraft and size related to the impact speed at the target according to the legend on the lower part of the figure is produced. This „impact circle" fades away with time so an impact is better visible. </div