Symmetry Detection and Topological Synthesis of Mechanisms of Powertrains

The function of vehicle powertrains (including hybrid powertrains) is to transmit power from the power source (engine or electric machine) to driving wheels. The planetary gear train (PGT) is a core structure of mechanisms of powertrains. The detection of topological symmetry is helpful for improvin...

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Bibliographic Details
Published inEnergies (Basel) Vol. 15; no. 13; p. 4755
Main Authors Yang, Wenjian, Li, Changping
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.07.2022
Subjects
Chains
Design
Design improvements
Efficiency
Gear trains
Kinematics
Mechanical devices
mechanism design
planetary gear train
Power management
Power sources
Powertrain
Symmetry
Symmetry detection
topological symmetry
topological synthesis
Topology
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Summary:The function of vehicle powertrains (including hybrid powertrains) is to transmit power from the power source (engine or electric machine) to driving wheels. The planetary gear train (PGT) is a core structure of mechanisms of powertrains. The detection of topological symmetry is helpful for improving the efficiency of mechanism design. In this paper, we present a fully automatic and reliable method for detecting symmetry of plane kinematic chains and extend this method to symmetry detection and the topological design of mechanisms of powertrains. First, the topological model and adjacency matrix are introduced to represent various kinds of plane kinematic chains. Then, the moment matrix of the kinematic chain is established to obtain link groups, based on which we propose an algorithm to generate the unique numerical code of each link and precisely detect the symmetry. Our method is applied to synthesize different kinds of plane kinematic chains and mechanisms, which can improve the design efficiency of mechanisms of powertrains and other mechanical devices.
ISSN:1996-1073
1996-1073
DOI:10.3390/en15134755