A high open-loop gain controller

    Research output: Contribution to journalArticleScientificpeer-review

    11 Citations (Scopus)

    Abstract

    A new controller, especially suited for phase‐locked loops, is discussed. The controller, composed of RC‐circuit electronics, has a gain with a slope of −30 dB/decade over a wide bandwidth. It is shown that in certain systems the present controller (PI3/2 controller) provides a much higher feedback gain than an ordinary proportional‐integrator controller (PI controller).
    As applications, the superconducting quantum interference device (SQUID) and an electrically adjustable point contact used in surface microscopy or spectroscopy are discussed in some detail.
    The operation of the controller in a piezo‐driven point contact was studied experimentally.
    Original languageEnglish
    Pages (from-to)2449-2451
    JournalReview of Scientific Instruments
    Volume61
    Issue number9
    DOIs
    Publication statusPublished - 1990
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    controllers
    Controllers
    Point contacts
    SQUIDs
    Microscopic examination
    Electronic equipment
    Spectroscopy
    slopes
    microscopy
    bandwidth
    Feedback
    Bandwidth
    interference
    electronics
    spectroscopy

    Cite this

    @article{4f5d59c677db437ab4cefce58267e971,
    title = "A high open-loop gain controller",
    abstract = "A new controller, especially suited for phase‐locked loops, is discussed. The controller, composed of RC‐circuit electronics, has a gain with a slope of −30 dB/decade over a wide bandwidth. It is shown that in certain systems the present controller (PI3/2 controller) provides a much higher feedback gain than an ordinary proportional‐integrator controller (PI controller). As applications, the superconducting quantum interference device (SQUID) and an electrically adjustable point contact used in surface microscopy or spectroscopy are discussed in some detail. The operation of the controller in a piezo‐driven point contact was studied experimentally.",
    author = "Heikki Sepp{\"a} and Hannu Sipola",
    note = "Project code: S{\"A}H1201",
    year = "1990",
    doi = "10.1063/1.1141337",
    language = "English",
    volume = "61",
    pages = "2449--2451",
    journal = "Review of Scientific Instruments",
    issn = "0034-6748",
    publisher = "American Institute of Physics AIP",
    number = "9",

    }

    A high open-loop gain controller. / Seppä, Heikki; Sipola, Hannu.

    In: Review of Scientific Instruments, Vol. 61, No. 9, 1990, p. 2449-2451.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - A high open-loop gain controller

    AU - Seppä, Heikki

    AU - Sipola, Hannu

    N1 - Project code: SÄH1201

    PY - 1990

    Y1 - 1990

    N2 - A new controller, especially suited for phase‐locked loops, is discussed. The controller, composed of RC‐circuit electronics, has a gain with a slope of −30 dB/decade over a wide bandwidth. It is shown that in certain systems the present controller (PI3/2 controller) provides a much higher feedback gain than an ordinary proportional‐integrator controller (PI controller). As applications, the superconducting quantum interference device (SQUID) and an electrically adjustable point contact used in surface microscopy or spectroscopy are discussed in some detail. The operation of the controller in a piezo‐driven point contact was studied experimentally.

    AB - A new controller, especially suited for phase‐locked loops, is discussed. The controller, composed of RC‐circuit electronics, has a gain with a slope of −30 dB/decade over a wide bandwidth. It is shown that in certain systems the present controller (PI3/2 controller) provides a much higher feedback gain than an ordinary proportional‐integrator controller (PI controller). As applications, the superconducting quantum interference device (SQUID) and an electrically adjustable point contact used in surface microscopy or spectroscopy are discussed in some detail. The operation of the controller in a piezo‐driven point contact was studied experimentally.

    U2 - 10.1063/1.1141337

    DO - 10.1063/1.1141337

    M3 - Article

    VL - 61

    SP - 2449

    EP - 2451

    JO - Review of Scientific Instruments

    JF - Review of Scientific Instruments

    SN - 0034-6748

    IS - 9

    ER -