New On-Line, Real-Time RainFlow Counting Algorithm

    Research output: Contribution to conferencePaper


    This paper presents a new rainflow cycle counting algorithm called the Left-Right (L-R) method which bases its theory on the pattern classification procedure as proposed by Endo, et. al (1974). The L-R method provides two unique features which are improvements over the standard one pass (1P) rainflow counting algorithm developed by Downing and Socie (1982) when used for on-line, real-time cyclecounting applications. The first feature is that the L-R method bins the data constituting half cycles instead of storing the data points in array. This feature reduces the computer memory necessary to store the half cycle data by at least an order of magnitude over the 1P method. The second feature is that the L-R method resolves full cycle counts from the previously binned half cycles by usinga very fast grouping technique. This technique is much faster than the recursive pagoda-roof procedure used in the 1P method. These two features make the L-R method an improvment over the 1P method in both computer memory necessary and in computation time.
    Original languageAmerican English
    PagesVol. I: 132-141
    Number of pages10
    StatePublished - 1996
    EventEnergy Week '96 - Houston, Texas
    Duration: 29 Jan 19962 Feb 1996


    ConferenceEnergy Week '96
    CityHouston, Texas

    Bibliographical note

    Work performed by the University of Texas at El Paso, El Paso, Texas

    NREL Publication Number

    • NREL/CP-21860


    Dive into the research topics of 'New On-Line, Real-Time RainFlow Counting Algorithm'. Together they form a unique fingerprint.

    Cite this