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2001 IEEE Autotestcon Proceedings. IEEE Systems Readiness Technology Conference. (Cat. No.01CH37237)

20-23 Aug. 2001

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  • 2001 IEEE Autotestcon Proceedings. IEEE Systems Readiness Technology Conference. (Cat. No.01CH37237)

    Publication Year: 2001
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  • Author index

    Publication Year: 2001, Page(s):xxvi - xxviii
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    Freely Available from IEEE
  • Implementation strategy for AI-ESTATE compliance in the Remote Diagnosis Server (RDS) framework

    Publication Year: 2001, Page(s):999 - 1014
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2088 KB) | HTML iconHTML

    The main objective of the paper is to outline, in detail, the implementation strategy and process of IEEE Standard 1232, Artificial Intelligence Exchange and Service Tie to All Test Environments (AI-ESTATE) compliance of the product suite from Qualtech Systems, Inc., while maintaining the product suite's existing mechanism of information interchange and service specifications. The product suite in... View full abstract»

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  • Effective turbine engine diagnostics

    Publication Year: 2001, Page(s):441 - 458
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1368 KB) | HTML iconHTML

    Current turbine engine testing rejection criteria do not fully check for all observed and known operational failure modes. A failure mode indicator that is not recognized is a slow gas generator at rated power, which indicates turbine deterioration, yet no minimum speed limit exists. Instead, the slow gas generator speed is considered indication of a better engine. Knowledge Engineering has been u... View full abstract»

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  • Improved diagnostic and prognostic assessments using health management information fusion

    Publication Year: 2001, Page(s):365 - 377
    Cited by:  Papers (7)  |  Patents (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (768 KB) | HTML iconHTML

    Various data, feature and knowledge fusion strategies and architectures have been developed over the last several years for improving upon the accuracy, robustness and overall effectiveness of anomaly, diagnostic and prognostic technologies. Fusion of relevant sensor data, maintenance database information, and outputs from various diagnostic and prognostic technologies has proven effective in redu... View full abstract»

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  • Commercial ATS program management

    Publication Year: 2001, Page(s):306 - 312
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB) | HTML iconHTML

    With the defense industry's ever-increasing reliance on Commercial-Off-The-Shelf (COTS) Automatic Test Systems (ATS) and commercial suppliers, there is a need to recognize and actively manage the gap between the expectations of the defense industry and the commercial community. The key to a successful program has proven to be investing time during the proposal stage and at contract award to clearl... View full abstract»

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  • Remote diagnosis server architecture

    Publication Year: 2001, Page(s):988 - 998
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1048 KB) | HTML iconHTML

    Modern systems such as the Space Shuttle, the International Space Station, or nuclear power plants are examples of mission critical systems that need to be monitored around the clock. Such systems typically consist of embedded sensors in networked subsystems that can transmit data to central (or remote) monitoring stations. At Qualtech Systems, we are developing a Remote Diagnosis Server (RDS... View full abstract»

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  • A mixed-signal framework and standard for high-frequency timing measurements

    Publication Year: 2001, Page(s):504 - 513
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB) | HTML iconHTML

    Timing measurements in computer and communication systems operating at gigahertz frequencies demand accuracy and repeatability not currently available from automatic test equipment. This paper describes a framework to model resources of existing tester, test instrument, on-chip mixed-signal measurement circuits, and the device-under-test (DUT). Standardized test methods, together with these test m... View full abstract»

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  • Model-based health tracking

    Publication Year: 2001, Page(s):352 - 364
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB) | HTML iconHTML

    Accurate health estimation is of prime importance to reduce operational costs and guarantee readiness levels of mission critical systems such as found in, e.g., the aerospace industry. Construction of health management systems is complicated by the complexity of systems under scrutiny, both in terms of the dynamic behavior of these systems and in terms of the number of components and how they inte... View full abstract»

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  • Tools and procedures for successful TPS management

    Publication Year: 2001, Page(s):289 - 305
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1096 KB) | HTML iconHTML

    The enormous costs associated with Test Program Sets are well known throughout the industry. Therefore, the successful management of a TPS development program is of crucial importance. This paper will attempt to encompass the various management issues involved in the TPS development process. To begin with, a careful review of the TPS must be effected during the bid process. Task evaluation tools a... View full abstract»

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  • IEEE P1505 Receiver Fixture Interface (RFI) system standard update 6.0

    Publication Year: 2001, Page(s):480 - 496
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1128 KB) | HTML iconHTML

    The IEEE P1505 Receiver Fixture Interface (RFI) Standard provides a common mechanical quick disconnect for connecting large numbers of electrical signals (digital, analog, RF, power, etc.). Test Interfaces are used primarily in automatic test systems to support a wide variety Unit-Under-Test (UUT) requirements with a common set test assets. This,paper describes the IEEE P1505 RFI Standard Specific... View full abstract»

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  • An algorithm for diagnostic reasoning using TFPG models in embedded real-time applications

    Publication Year: 2001, Page(s):978 - 987
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB) | HTML iconHTML

    Embedded diagnostic reasoners require compact modeling representations and efficient reasoning algorithms given limited available computational resources. Timed failure propagation graphs (TFPG) are compact representations used to model failure causes and progressions of conditions that are symptoms of failure occurrence, together with the temporality and likelihood of these symptom progressions a... View full abstract»

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  • ATLAS2K and the IVI Signal Interface-the framework for an open, modular and distributed ATS architecture

    Publication Year: 2001, Page(s):23 - 37
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB) | HTML iconHTML

    This paper investigates the combined use of ATLAS2K and the IVI Signal Interface in ATS architectures. The analysis of these initiatives identifies a set of common features and demonstrates that they address complementary areas of ATS architectures. This situation makes them an excellent fit for establishing the foundation of a modular, open, distributed and coherent COM-based ATS architecture View full abstract»

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  • Fault prognosis using dynamic wavelet neural networks

    Publication Year: 2001, Page(s):857 - 870
    Cited by:  Papers (17)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB) | HTML iconHTML

    Prognostic algorithms for condition based maintenance of critical machine components are presenting major challenges to software designers and control engineers. Predicting time-to-failure accurately and reliably is absolutely essential if such maintenance practices are to find their way into the industrial floor. Moreover, means are required to assess the performance and effectiveness of these al... View full abstract»

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  • VXI LVDT simulation COTS resource augments legacy commercial airline industry ATE

    Publication Year: 2001, Page(s):923 - 930
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB) | HTML iconHTML

    This paper describes Rockwell Collins airline industry automatic test equipment (ATE) and North Atlantic Instruments (NAI) VXI commercial-off-the-shelf (COTS) tester cards. The Collins ATE is used for testing seller furnished equipment (SFE) and buyer furnished equipment (BFE) in accordance with industry standard ARINC 608A requirements. The NAI VXI synchro/resolver card is a module of both the SF... View full abstract»

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  • Adaptive filtering for calibration of redundant signals

    Publication Year: 2001, Page(s):121 - 136
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (920 KB) | HTML iconHTML

    This paper presents formulation and validation of an adaptive filter for real-time calibration of redundant signals consisting of sensor data and/or analytically derived measurements. Individual signals are calibrated on-line by an additive correction that is generated by a recursive filter. The covariance matrix of the measurement noise is adjusted as a function of the a posteriori probabilities ... View full abstract»

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  • An application of diagnostic inference modeling to vehicle health management

    Publication Year: 2001, Page(s):706 - 717
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (792 KB) | HTML iconHTML

    We discuss the approach we have taken to applying diagnostic modeling and associated reasoning techniques to the problem of diagnosing and prognosing faults. as part of vehicle health, management systems. We present a brief background of diagnostic fault modeling based on lessons learned from ongoing research as part of the NASA/FAA Aviation Safety Program. We discuss the application of these tech... View full abstract»

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  • Parallel analog functional test

    Publication Year: 2001, Page(s):616 - 624
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB) | HTML iconHTML

    The concept of parallel testing is something that means different things to different people. Both commercial and military applications require some level of functional testing to provide end user surety that the product in question will actually perform while in-system. Traditional test approaches mix functional and parametric test techniques while trading off issues such as test system cost and ... View full abstract»

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  • Spectral analysis in parallel structures

    Publication Year: 2001, Page(s):284 - 287
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB) | HTML iconHTML

    Experimental studies of large class applications are needed of spectral analysis in real time. The possibility is shown to form computer algorithm for the model of signal representation in stochastic realization. A possible variant of parallel structures algorithm for crosspectral and spectral density function of signal estimation is considered View full abstract»

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  • The forces changing automatic testing for DoD depots and what lies ahead

    Publication Year: 2001, Page(s):319 - 331
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (968 KB) | HTML iconHTML

    This paper will discuss the four major forces presently shaping automatic testing at the remaining Department of Defense Depots. It will explain the history of how automated testing has evolved and the changes that have resulted from the forces of the last 10 years. Additionally it will discuss what challenges and opportunities are ahead for the many Test Program Development Agencies and Automated... View full abstract»

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  • The integration of virtual instruments into pipeline LPG network monitoring system

    Publication Year: 2001, Page(s):459 - 466
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB) | HTML iconHTML

    The paper primarily discusses the design and implementation of a pipeline Liquefied Petroleum Gas (LPG) monitoring system based upon the virtual instrument techniques. Starting from the introduction of the monitoring system development requirements and environment, the paper describes its hardware configuration and software functionalities in details. Practical application has demonstrated that th... View full abstract»

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  • A systems framework for transmitting information between design and test

    Publication Year: 2001, Page(s):54 - 62
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    In spite of good intentions, and the work of many people over many years, test engineers and design engineers are still divided by a great chasm. Design information is still thrown "over the wall" to test, and information from test is seldom reflected back in design. The authors present a systems framework that allows models to be used as design rule specifications in the design process, used as t... View full abstract»

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  • Accelerated evolution of the system support paradigm

    Publication Year: 2001, Page(s):940 - 950
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (672 KB) | HTML iconHTML

    A number of trends, including growing prime system complexity, the more widespread use of COTS equipment, an inclination to extended contractor support, and the increasing importance of global diagnostic coverage, all portend changes in the current system support paradigm. These changes will affect support acquisition, development, design and operational practice insofar as they relate to generic ... View full abstract»

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  • Re-configurable hardware for "synthetic" wideband instruments

    Publication Year: 2001, Page(s):632 - 647
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB) | HTML iconHTML

    Using current commercially-available programmable devices, ranging from ASICs to PCs, it is possible to configure a single set of hardware that can serve as the measurement kernel for software-defined instruments suitable for the creation and/or analysis of modulated signals up to 80 MHz - bandwidth. Furnished with an appropriate software interface, such a device can replace individual instruments... View full abstract»

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  • Formal specification of testability metrics in IEEE P1522

    Publication Year: 2001, Page(s):71 - 82
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (720 KB) | HTML iconHTML

    The objective of the IEEE P1522 Testability and Diagnosability Metrics standard is to provide notionally correct and mathematically precise definitions of testability measures that may be used to either measure the testability characteristics of a system, or predict the testability of a system. Notionally correct means that the measures are not in conflict with intuitive and historical representat... View full abstract»

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