• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 514
  • 486
  • 333
  • 276
  • 59
  • 34
  • 27
  • 16
  • 12
  • 10
  • 8
  • 4
  • 3
  • 3
  • 3
  • Tagged with
  • 2195
  • 403
  • 305
  • 295
  • 230
  • 205
  • 164
  • 137
  • 134
  • 123
  • 121
  • 120
  • 116
  • 114
  • 103
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
151

Wireless Transducer Systems Architectures – A User’s Perspective

Blakely, Patrick A. 10 1900 (has links)
International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / This paper provides essential requirements and describes some possible architectures of so-called Wireless Transducers Systems from the user’s perspective and discusses the application advantages of each architecture, in the airplane-testing environment. The intent of this paper is to stimulate discussion in the transducer user and supplier communities and standards committees, leading to increased product suitability and lower cost for commercial off the shelf wireless transducer products.
152

APPLICATIONS FOR A PORTABLE PC/104 BASED INSTRUMENTATION CONTROLLER

Schumacher, Gary A. 10 1900 (has links)
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / PC based instrumentation and telemetry processing systems are attractive because of their ease of use, familiarity, and affordability. The evolution of PC computing power has resulted in a telemetry processing system easily up to most tasks, even for control of and processing of data from a very complex system such as the Common Airborne Instrumentation System (CAIS) used on the new Lockheed-Martin F-22. A complete system including decommutators, bit synchronizers, IRIG time code readers, simulators, DACs, live video, and tape units for logging can be installed in a rackmount, desktop, or even portable enclosure. The PC/104 standard represents another step forward in the PC industry evolution towards the goals of lower power consumption, smaller size, and greater capacity. The advent of this standard and the availability of processors and peripherals in this form factor has made possible the development of a new generation of portable low cost test equipment. This paper will outline the advantages and applications offered by a full-function, standalone, rugged, and portable instrumentation controller. Applications of this small (5.25"H x 8.0"W x 9.5"L) unit could include: flight line instrumentation check-out, onboard aircraft data monitoring, automotive testing, small craft testing, helicopter testing, and just about any other application where small-size, affordability, and capability are required.
153

Interoperability Standards for Network Based Airborne Video Systems

Buckley, Mark, Berard, Alfredo, Butler, Michael 10 1900 (has links)
ITC/USA 2015 Conference Proceedings / The Fifty-First Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2015 / Bally's Hotel & Convention Center, Las Vegas, NV / The deployment of network-based airborne instrumentation is leading to cost efficient replacement of legacy systems. One application of airborne instrumentation systems that has to this point been developed and maintained separately from traditional avionics and orange-wire data acquisition systems is video and imagery. The development of network-based video and imagery systems has led to an opportunity to unify these two previously distinct airborne data acquisition activities using standards for plug-n-play interoperability across airframes and organizations. This paper describes standards based network-based video and imagery instrumentation systems which, are being implemented to replace existing proprietary systems.
154

INSTRUMENTED BALLISTIC TEST PROJECTILE

Flyash, Boris, Platovskiy, Steve, Cantatore, Dominick 10 1900 (has links)
ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada / For years, ballisticians have been studying the phenomena associated with cannon launched projectiles. In particular, is the study of the pressure internal to the cannon and about the base of the projectile during cannon launch through muzzle exit. Pressure on the base is thought to be uniform and therefore hydrostatic, even though there are undulations in the magnitude of the pressure from the burning propellant. This paper studies various phenomena of the launching of 155-mm artillery projectiles with slip band obturators. Specifically, pressure gradients in and around the base and pressure along the body caused by obturator “blow-by” during the interior ballistic flight and muzzle exit. This study is accomplished by use of two different types of Instrumented Ballistic Test Projectiles (IBTP). The objective of tests performed was to successfully capture pressure and acceleration live data which will be used to characterize the localized base and body pressurization on a 155-mm artillery cannon launched projectile. The telemetry system used for these tests was the ARRT-124 telemetry system provided by the Armament Research, Development, and Engineering Center, specifically the Precision Munitions Instrumentation Division. The telemetry system used for the IBTP employs a traditional FM/FM technique for monitoring and transmitting a number of analog channels. Preliminary captured data indicated localized fluctuations in pressure that are not uniform over the base and the projectile body. Further studying of the data may provide insight into other projectile dynamics such as fin deployment, set forward accelerations at muzzle exit, and obturator performance.
155

An Orchestration for Wind Band of Peter Klatzow’s From the Poets: Exploring a systematic approach to orchestration.

Feder, Arthur John 03 1900 (has links)
Thesis (MMus) -- Stellenbosch University, 2010. / The wind band is a far underused composition medium in South Africa. Partially, this is due to the stereotypical view towards the ensemble and unfamiliarity with dealing with the heterogeneous timbral pallet. The author aimed to demonstrate the ensemble’s capabilities through a systematic orchestration process. The result of this dissertation is an orchestration of a large-scale work, From the Poets, for wind band. This creative research resulted in a systematic critical investigation of instrumental idiosyncrasies, balance, conventions of notation and timbre combinations found in the wind band. Furthermore, the author scrutinised the benefits and shortcomings of the aforementioned systematic process. Concluding that, through a methodical process, an orchestrator achieves a thorough understanding of the original text and can thus translate without fear of making unfavourable musical decisions. However, as this was a two-year process, the method might not work in the time constraints presented in real world situations, such as the music industry for instance. The author provides possible adaptations to the method in order to cope with the above-mentioned time constraints. / Die blaasorkes is ʼn vêr-onderbenutte medium vir komposisie in Suid-Afrika, deels as gevolg van die stereotipiese siening oor die ensemble en 'n gebrekkige kennis in die hantering van die orkes se heterogene toonkleur palet. Die skrywer het hom beywer om die ensemble se vermoëns te demonstreer deur middel van 'n stelselmatige orkestrasieproses. Die resultaat van hierdie skripsie is 'n orkestrasie van 'n grootskaalse werk, From the Poets, vir blaasorkes. Hierdie kreatiewe navorsing het gelei tot 'n sistematiese kritiese ondersoek met betrekking tot instrumentale eienaardighede, balans, konvensies van notasie en toonkleur kombinasies wat ʼn blaasorkes bied. Verder het die skrywer die voordele en tekortkominge van die bogenoemde proses ondersoek. Die gevolgtrekking is dat, by wyse van, 'n metodiese proses, 'n orkestrator 'n deeglike begrip van die oorspronklike teks kan bereik en dus die materiaal vertaal sonder vrees om ongunstige musikale besluite te maak. Aangesien die navorsing 'n tweejaarlange proses behels het, glo die skrywer dat hierdie metode moontlik ontoereikend mag wees gegewe die tydsbeperkinge wat dikwels deur die musiekindustrie opgelê word. Derhalwe bied die skrywer ook moontlike aanpassings tot sy metode om die bogenoemde tydsbeperkings te akkommodeer.
156

The application of robust inverse dynamics estimation to the control of V/STOL aircraft

Bennett, David January 1996 (has links)
No description available.
157

The design and test rig evaluation of advanced control laws for primary flight control actuators

Chun, Louis Hoo Loung January 1993 (has links)
No description available.
158

The design and analysis of a reconfigurable flight control system for advanced civil aircraft

Oliva, A. P. January 1994 (has links)
No description available.
159

Application of variable structure control methods to actuator nonlinearities in aerospace systems

Bingham, Christopher Malcolm January 1994 (has links)
No description available.
160

Scheduled multivariable control of battlefield helicopters

Kellett, Martin Gerard January 1993 (has links)
No description available.

Page generated in 0.0998 seconds