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in subjects: "Real Time Systems"

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Fortran for the 1980's

The new standard Fortran 77 has not been available long, but the American National Standards Institute (ANSI) committee X3J3 responsible for Fortran standardization is already working on the next revision. Since the result of this work will be a candidate for an international (ISO) standard, it is important that work being done now become known to all persons interested in Fortran. A new set of problems related to the accommodation of related standards in data base management and real-time proc… more

Date: January 1, 1980

Creator: Adams, J. & Brainerd, W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

On-line chemical composition analyzer development

The energy consumed in distillation processes in the United States represents nearly three percent of the total national energy consumption. If effective control of distillation columns can be accomplished, it has been estimated that it would result in a reduction in the national energy consumption of 0.3%. Real-time control based on mixture composition could achieve these savings. However, the major distillation processes represent diverse applications and at present there does not exist a pro… more

Date: February 1, 1992

Creator: Roberts, M.J.; Garrison, A.A.; Muly, E.C. & Moore, C.F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Timing and control monitor system upgrade design document. Version 4

This is a design document for the Timing and Control Monitor System Upgrade Project. This project is intended to provide a replacement system for the existing user Encoder Monitor Systems and Varian 72 Control Room computer systems. All of these systems reside at the Nevada Test Site. The function of the T and C Monitor System is to gather real-time statistics and data on user defined key variables from control, communication, data acquistion systems, and from the monitoring system itself. The … more

Date: January 24, 1984

Creator: Brandt, J.J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

A prototype on-line work procedure system for radioisotope thermoelectric generator production

An on-line system to manage work procedures is being developed to support radioisotope thermoelectric generator (RTG) assembly and testing in a new production facility. This system implements production work procedures as interactive electronic documents executed at the work site with no intermediate printed form. It provides good control of the creation and application of work procedures and provides active assistance to the worker in performing them and in documenting the results. An extensiv… more

Date: September 1, 1991

Creator: Kiebel, G.R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Expert system control of a six-legged walking telerobot

The Robotics Technology Group of the Savannah River Laboratory has implemented a three-stage expert system for a six-legged walking telerobot. Remote operation of this machine requires the knowledge of a highly skilled operator. Stability, size, and mode of operation considerations must take place continuously, in general, much more so than with a typical wheeled vehicle. The technology employed provides for quasi-real-time computer control, manual control, and an expert advisor -- all in the s… more

Date: January 1, 1989

Creator: DeVries, K R

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

(Intrusion Path Analysis)

The design and implementation of an Intrusion Path Analysis (IPA) function came about as a result of the upgrades to the security systems at the Savannah River Site (SRS), near Aiken, South Carolina. The stated requirements for IPA were broad, leaving opportunity for creative freedom during design and development. The essential elements were that it: be based on alarm and sensor state data; consider insider as well as outsider threats; be flexible and easily enabled or disabled; not be processo… more

Date: January 1, 1989

Creator: Hardwick, R D

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Application of artificial intelligence to melter control: Realtime process advisor for the scale melter facility

The Defense Waste Processing Facility (DWPF) at the Savannah River Plant (SRP) is currently under construction and when completed will process high-level radioactive waste into a borosilicate glass wasteform. This facility will consist of numerous batch chemical processing steps as well as the continuous operation of a joule-heated melter and its off-gas treatment system. A realtime process advisor system based on Artificial Intelligence (AI) techniques has been developed and is currently in us… more

Date: January 1, 1988

Creator: Edwards, Jr, R E

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Proceedings of the 1986 workshop on advanced time-of-flight neutron powder diffraction

This report contains abstracts of talks and summaries of discussions from a small workshop held to discuss the future of time-of-flight neutron powder diffraction and its implementation at the Los Alamos Neutron Scattering Center. 47 refs., 3 figs.

Date: September 1, 1986

Creator: Lawson, A. C. & Smith, K. (comps.)

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Hardware description ADSP-21020 40-bit floating point DSP as designed in a remotely controlled digital CW Doppler radar

A continuous wave Doppler radar system has been designed which is portable, easily deployed, and remotely controlled. The heart of this system is a DSP/control board using Analog Devices ADSP-21020 40-bit floating point digital signal processor (DSP) microprocessor. Two 18-bit audio A/D converters provide digital input to the DSP/controller board for near real time target detection. Program memory for the DSP is dual ported with an Intel 87C51 microcontroller allowing DSP code to be up-loaded o… more

Date: January 1, 1991

Creator: Morrison, R. E. & Robinson, S. H.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Assessment of offsite, real-time dose measurement systems for emergency situations

An evaluation is made of the effectiveness of fixed, real-time monitoring systems around nuclear power stations in determining the magnitude of unmonitored releases. The effects of meteorological conditions on the accuracy with which the magnitude of unmonitored releases is determined and the uncertainties inherent in defining these meteorological conditions are discussed. The number and placement of fixed field detectors in a system is discussed, and the data processing equipment required to c… more

Date: April 1, 1982

Creator: Maeck, W. J.; Hoffman, L. G.; Staples, B. A. & Keller, J. H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

LSQFT: a nonlinear least squares data fitting subroutine suitable for minicomputers. [In FORTRAN for Hewlett Packard 1000]

The FORTRAN subroutine LSQFT is described which uses the Gauss method to fit nonlinear functions to data. This particular program is suitable for use on a minicomputer that is utilized for real-time data acquisition and analysis. A sample problem is described that requires a nine-parameter nonlinear fit to 200 data points. This problem serves both to illustrate the use of LSQFT and to compare its results with TJMAR1, a nonlinear parameter estimation program available in the Sandia MATHLIB, for … more

Date: May 1, 1980

Creator: Drotning, W.D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Computerized data acquisition system for production, injection and interference tests

A computer-based system for collecting, processing, and analyzing pressure transient data has been developed. Primary components include downhole pressure sensors, linedrivers, a micro-computer, data storage disk, scanner, frequency counter, digital voltmeter, power supply, graphics plotter, and printer. In-field data processing and analysis greatly aid in handling the large volume of data that are collected during pressure transients tests, particularly the multiwell interference tests that ar… more

Date: June 1, 1986

Creator: Benson, S.M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

General purpose computers in real time

I see three main trends in the use of general purpose computers in real time. The first is more processing power. The second is the use of higher speed interconnects between computers (allowing more data to be delivered to the processors). The third is the use of larger programs running in the computers. Although there is still work that needs to be done, I believe that all indications are that the online need for general purpose computers should be available for the SCC and LHC machines. 2 fig… more

Date: September 18, 1989

Creator: Biel, J.R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Microscope and method of use

A method and apparatus for electronically focusing and electronically scanning microscopic specimens are given. In the invention, visual images of even moving, living, opaque specimens can be acoustically obtained and viewed with virtually no time needed for processing (i.e., real time processing is used). And planar samples are not required. The specimens (if planar) need not be moved during scanning, although it will be desirable and possible to move or rotate nonplanar specimens (e.g., laser… more

Date: August 18, 1981

Creator: Bongianni, W.L.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

open access

Faster-than-real-time simulation for plant control

As part of the advanced diagnostic prognostic analysis and control system, a faster-than-real-time simulation of the EBR-II reactor has been developed using the Digital Simulator for Nuclear Power Plants (DSNP). Other elements of the system include an expert system, advanced graphics display, real time data acquisition using the EBR-II plant computer and a data transmission system coupling the control computers with the plant and graphics display. Various plant models have been constructed with… more

Date: January 1, 1989

Creator: Larson, H. A.; Dean, E. M. & Lehto, W. K.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Cooperative testing of a positive personnel identifier

HEDL has a requirement to ensure the identification of remote computer terminal operators on a real-time nuclear inventory data base. The integrity of this data base depends on input from authorized individuals. Thus, a key to developing such a system is the ability to positively identify people attempting access to the system. Small scale tests of the Identimat 2000T hand geometry unit with an adjusting alogrithm have suggested a promising solution. To prove operational suitability, HEDL, in c… more

Date: June 1, 1980

Creator: O'Callaghan, P. B.; Grambihler, A. J.; Graham, D. K. & Bradley, R. G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Four-wheel-drive powertrain models for real-time simulation

Dynamic vehicle powertrain models have been formulated by many researchers for particular applications, mainly the analysis of powertrain characteristics or vibration. In this paper, we formulate models of four-wheel-drive vehicle powertrains for the purpose of real-time simulation. While not encompassing the complete characteristics of powertrain operation, these models are applicable for use in vehicle simulators, and include both the differential and lock-up modes of four-wheel-drive transfe… more

Date: January 1, 1991

Creator: Freeman, J.S. (Los Alamos National Lab., NM (United States)) & Velinsky, S.A. (California Univ., Davis, CA (United States). Dept. of Mechanical Engineering)

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Real time sensors in geothermal fluids: their costs and benefits

A summary of the PNL effort, a background discussion on geothermal power plants, and a discussion of several cases where problems were identified and in some cases prevented are included. Cost factors, savings, and benefits-costs to the sponsor are summarized and brief conclusions concerning the benefits of having real time instrumentation installed in the power plant are characterized.

Date: February 1, 1982

Creator: Jensen, G.A.; Shannon, D.W. & Hazelton, R.F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Real-time measurement of plutonium in air by direct-inlet surface ionization mass spectrometry. Status report

A new technique is being developed for monitoring low-level airborne plutonium on a real-time basis. The technique is based on surface ionization mass spectrometry of airborne particles. It will be capable of measuring plutonium concentrations below the maximum permissible concentration (MPC) level. A complete mass spectrometer was designed and constructed for this purpose. Major components which were developed and made operational for the instrument include an efficient inlet for directly samp… more

Date: April 1, 1980

Creator: Stoffels, J.J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Metrology data reduction system: PDP-11/34 computer system. [MOUNT, for thermistor mount data acquisition, in FORTRAN IV]

A PDP-11/34 computer system was installed to acquire, correct, scale, display, store, and process data obtained by microwave and dc area coupler controllers. The system is used to calibrate power sensors and impedance and dc measurement standards on a real-time basis. The microwave data input is from a digital voltmeter and scanner arrangement, which also may be controlled from a P-ROM control board. The dc data input is from a passive device interface or from a terminal keyboard. 5 figures, 8 … more

Date: April 1, 1980

Creator: Cable, J.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Real time analysis of tokamak discharge parameters

The techniques used in implementing two applications of real time analysis of data from the DIII-D tokamak are described. These tasks, which are demanding in both the speed of data acquisition and the speed of computation, execute on hardware capable of acquiring 40 million data samples per second and executing 80 million floating point operations per second. In the first case, a feedback control algorithm executing at a 10 kHz cycle frequency is used to specify the current in the poloidal fiel… more

Date: March 1, 1992

Creator: Ferron, J. R. & Strait, E. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Automating large-scale reactor systems

This paper conveys a philosophy for developing automated large-scale control systems that behave in an integrated, intelligent, flexible manner. Methods for operating large-scale systems under varying degrees of equipment degradation are discussed, and a design approach that separates the effort into phases is suggested. 5 refs., 1 fig.

Date: January 1, 1985

Creator: Kisner, R. A.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Real time analysis under EDS

This paper describes the analysis component of the Enrichment Diagnostic System (EDS) developed for the Atomic Vapor Laser Isotope Separation Program (AVLIS) at Lawrence Livermore National Laboratory (LLNL). Four different types of analysis are performed on data acquired through EDS: (1) absorption spectroscopy on laser-generated spectral lines, (2) mass spectrometer analysis, (3) general purpose waveform analysis, and (4) separation performance calculations. The information produced from this … more

Date: July 1, 1985

Creator: Schneberk, D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Surface topography measurements over the 1 meter to 10 micrometer spatial period bandwidth

A recently-developed long-trace surface profiling instrument (LTP) is now in operation in our laboratory measuring surface profiles on grazing incidence aspheres and also conventional optical surface. The LTP characterizes surface height profiles in a non-contact manner over spatial periods ranging from 1 meter (the maximum scan length) to 2 mm (the Nyquist period for 1 mm sampling period) and complements the range of our WYKO NCP-1000 2.5X surface roughness profiler (5 mm to 9.8 {mu}m). Using … more

Date: September 1, 1989

Creator: Takacs, P. Z.; Furenlid, K.; DeBiasse, R. A.; Church, E. L. (Brookhaven National Lab., Upton, NY (USA) & Army Research and Development Command, Dover, NJ (USA))

Item Type: Article

Partner: UNT Libraries Government Documents Department