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Toothed coupling machines and multi-air gap machines are interesting solutions for direct drive because of the high specific performances they can achieve.
Originally adapted from the neurosphere assay, the nonadherent mammosphere assay has been utilized to assess early progenitor/stem cell frequency in a given population of mammary epithelial cells. This method has also been used to measure the frequency of tumorsphere initiating cells in both primary mammary tumors as well as in tumor cell lines. Although, the mammosphere assay has been used extensively...
Tagging and social networks have come into increasing use in concert with the rise of collaborative and interactive on-line media. The focus of tagging is herein twofold: First of all the plain annotation of existing data by a governing instance in order to increase the semantic content of unstructured data, and secondly the application of such meta-information by a community or a group of like minded...
We propose an approach for exploring large corpora of textual customer feedback in a guided fashion, bringing order to massive amounts of unstructured information. The prototypical system we implemented allows an analyst to assess labelled clusters in a graphical fashion, based on treemaps, and perform drill-down operations to investigate the topic of interest in a more fine-grained manner. Labels...
These article deals with a special high performances, large extension, direct drive linear actuator for an aeronautical application. The purpose of this actuator is to remove the mechanical transmission, classically used, in order to increase the reliability. This actuator can reach very high performances in terms of mass and volume because of the multiplication of the number of airgaps. A particularity...
For companies acting on a global scale, the necessity to monitor and analyze news channels and consumer-generated media on the Web, such as weblogs and n news-groups, is steadily increasing. In particular the identification of novel trends and upcoming issues, as well as their dynamic evolution over time, is of utter importance to corporate communications and market analysts. Automated machine learning...
The increase of the performances of wind turbine systems passes through the removal of the speed-increasing gear which is generally located between the blades and the alternator and thus the direct drive of this last. In this article we will show that the association of a direct-driven synchronous motor with Vernier effect and a diode rectifier is possible and makes it possible to achieve interesting...
Today's Web pages are commonly made up of more than merely one cohesive block of information. For instance, news pages from popular media channels such as Financial Times or Washington Post consist of no more than 30%-50% of textual news, next to advertisements, link lists to related articles, disclaimer information, and so forth. However, for many search-oriented applications such as the detection...
Electric actuators are replacing hydraulic actuators in the new aircrafts. A direct drive multi-airgap linear actuator has been designed and developed in order to replace a hydraulic actuator for a landing gear system application. The advantage of using a direct drive solution is to remove the mechanical transmission and consequently to increase the reliability. The experimental results show the high...
This paper presents a high torque mass ratio electromagnetic actuator which works with two differents coupling of the air gap magnetic field. The first one is a polar coupling as for the conventional synchronous machines and the secondth is tooth coupling as for the Vernier machines.
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