• DocumentCode
    516758
  • Title

    COCA: an On Line Control IC for Watch Stepping Motors

  • Author

    Bernasconi, Ermanno ; Wattenhofer, Jean-Pierre ; Farine, Pierre-André ; Taghezout, Daho

  • Author_Institution
    Member, IEEE, Asulab SA, 2074 Marin, Switzerland
  • fYear
    1996
  • fDate
    17-19 Sept. 1996
  • Firstpage
    180
  • Lastpage
    183
  • Abstract
    An on-line control IC for watch stepping motors that allows significant power savings is presented. This system enables the open loop control of a wide range of motors. This leads to a significantly longer battery life, enables to cut motor production costs and to increase system reliability. Particularly, the COCA IC offers an extreme adaptability to the different motor types that can be driven, thanks to a programmable correlation function, and performs an immediate missed-step recognition and recovery.
  • Keywords
    Batteries; Coils; Control systems; Equations; Mechanical energy; Open loop systems; Space vector pulse width modulation; Torque; Voltage; Watches;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Solid-State Circuits Conference, 1996. ESSCIRC '96. Proceedings of the 22nd European
  • Conference_Location
    Neuchatel, Switzerland
  • Print_ISBN
    2-86332-197-8
  • Type

    conf

  • Filename
    5468621
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=516758