The concept of potential power efficiency is introduced as the efficiency of an epicyclic gear train measured in any moving reference frame. The conventional efficiency can be computed in a carrier-moving reference frame in which the gear carrier appears relatively fixed. In principle, by attaching the reference frame to an appropriate link, torques can be calculated with respect to each input, output or (relatively) fixed link in the epicyclic gear train. Once the power flow direction is obtained from the potential power ratio, the torque ratios are obtained from the potential power efficiencies, the particular expression of the efficiency of the epicyclic gear train is found in a simple manner. A systematic methodology for the efficiency analysis of one- and two-degree-of-freedom epicyclic gear trains is described and fourteen ready-to-use efficiency formulas are derived for two-degree-of-freedom gear pair entities (GPEs). The paper includes also a discussion on the redundancy of the efficiency formulas used for one-degree of freedom GPEs. An incomplete in the efficiency formulas in previous literature, which make them susceptible to wrong application, is brought to light.


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    Title :

    Meshing efficiency analysis of two-degree-of freedom epicyclic gear trains


    Contributors:

    Published in:

    Publication date :

    2016




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    50.15 Konstruktionslehre / 52.20 Antriebstechnik, Getriebelehre / 52.15 Maschinenelemente, Maschinenbaugruppen
    Local classification TIB:    770/5315/5330





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    Dedini, Franco Giuseppe / de Morais, Ricardo Ferrari | SAE Technical Papers | 2002