Affiliation:
1. Department of Electronics and Electromechanical Engineering, University of Extremadura, Sta. Teresa de Jornet 38, 06800 Me´rida, Spain
2. University of Extremadura, Badajoz, Spain
Abstract
It is shown that for any planetary gear train (PGT) it is possible to find the relationship existing between the transmission ratio of the train and the power transmitted through each gear pair (gearing power). Specifically, for trains of five and six members, this functional dependence generates a family of curves parameterized by the transmission ratio. A plot of this family of curves is called a power flow map. It allows one to identify those trains that have a potentially high efficiency. In particular, it identifies the transmissions which present power recirculation, a condition that is generally undesirable. Also, an analysis of the power flow maps for the six-member trains leads to the conclusion that, for most of these trains, there is a single expression for the efficiency. The interest of the proposed method is that it is only necessary to know the expression for the PGT’s transmission ratio in order to obtain its power flow map. Also, the map is independent of the constructional solution that is adopted for the train. Finally, the power maps that are obtained are used to find alternatives to the designs of a train consisting of several stages of a basic four-member PGT.
Subject
Computer Graphics and Computer-Aided Design,Computer Science Applications,Mechanical Engineering,Mechanics of Materials
Reference16 articles.
1. Macmillan, R. H.
, 1961, “Power Flow and Loss in Differential Mechanisms,” J. Mech. Eng. Sci., 3, pp. 37–41.
2. Radzimovsky, E. I.
, 1956, “A Simplified Approach for Determining Power Losses and Efficiencies of Planetary Gear Drives,” Mach. Des., 9, pp. 101–110.
3. Pennestri, E., and Freudenstein, F., 1993, “The Mechanical Efficiency of Planetary Gear Trains,” ASME J. Mech. Des., 115, pp. 645–651.
4. Pennestri, E., and Valentini, P. P., 2003, “A Review of Formulas for the Mechanical Efficiency Analysis of Two Degrees-of-Freedom Epicyclic Gear Trains,” ASME J. Mech. Des., 125, pp. 602–608.
5. Mathis, R., and Remond, Y., 1999, “A New Approach to Solving the Inverse Problem for Compound Gear Trains,” ASME J. Mech. Des., 121, pp. 98–106.
Cited by
40 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献