• Login
    View Item 
    •   Home
    • Conference Proceedings
    • International Telemetering Conference
    • International Telemetering Conference Proceedings, Volume 25 (1989)
    • View Item
    •   Home
    • Conference Proceedings
    • International Telemetering Conference
    • International Telemetering Conference Proceedings, Volume 25 (1989)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UA Campus RepositoryCommunitiesTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournalThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournal

    My Account

    LoginRegister

    About

    AboutUA Faculty PublicationsUA DissertationsUA Master's ThesesUA Honors ThesesUA PressUA YearbooksUA CatalogsUA Libraries

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    A Fully Digital Antenna Control System

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    ITC_1989_89-0824.pdf
    Size:
    8.744Kb
    Format:
    PDF
    Download
    Author
    El Busch, Charles
    Affiliation
    Scientific-Atlanta, Inc.
    Issue Date
    1989-11
    
    Metadata
    Show full item record
    Rights
    Copyright © International Foundation for Telemetering
    Collection Information
    Proceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
    Publisher
    International Foundation for Telemetering
    Journal
    International Telemetering Conference Proceedings
    Abstract
    Antenna control systems are typically a combination of digital time domain algorithms for relatively simple mathematical operations followed by analog frequency domain filtering for mechanical resonance compensation. This paper presents an innovative, fully digital control system that utilizes the advantages of both modern sampled time domain control methods and classical frequency domain conceptualization. The unit is designed to perform all functions of the antenna control problem in the digital domain including generation of command coordiantes, position, rate, torque loop closure, servo compensation, and torque bias processing. Problems related to analog processing such as offsets, drift, and dynamic range are completely avoided in the digital domain. Non-linear and adaptive filtering is used to correct system non-linearities due to saturation, backlash, friction, and dead band. Rate and acceleration limiting is provided in the digital processing along with an optimal state estimator that is used to dramatically decrease system servo errors for dynamic targets. Digital filtering is accomplished by utilizing an internal bi-linear transform between the frequency domain input parameters familiar to most control engineers and the cascaded z-transform filter coefficients used by the control algorithms. All control and servo control parameters are programmed into the units’ nonvolatile memory by the control engineer using an interactive terminal attached to a service port. Changes to the servo compensation that often required hours of analysis and electronic component changes can now be effected and evaluated in seconds. Final outputs from the unit are motor drive commands that are converted to analog form for power amplifier use. All control and status communication between the unit and a host computer or operator console is via a high speed, fiber optic, serial data link.
    Sponsors
    International Foundation for Telemetering
    ISSN
    0884-5123
    0074-9079
    Additional Links
    http://www.telemetry.org/
    Collections
    International Telemetering Conference Proceedings, Volume 25 (1989)

    entitlement

     
    The University of Arizona Libraries | 1510 E. University Blvd. | Tucson, AZ 85721-0055
    Tel 520-621-6442 | repository@u.library.arizona.edu
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.