Conference article

Composable Modelling for a Hybrid Gearbox

Joshua Sutherland
Department of System Innovation, The University of Tokyo, Japan

Rui Gao
Modelon KK, Tokyo, Japan

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Published in: Proceedings of the 2nd Japanese Modelica Conference, Tokyo, Japan, May 17-18, 2018

Linköping Electronic Conference Proceedings 148:27, p. 187-194

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Published: 2019-02-21

ISBN: 978-91-7685-266-8

ISSN: 1650-3686 (print), 1650-3740 (online)


Gearbox modelling is an important topic to the simulation community due to its difficulty in representing mixed continuous and discrete behaviour. Such kind of models also usually couple the loss of power that is dependent on the angular velocity and the load. However, one single gearbox model with a certain fidelity cannot satisfy the broader needs of modelling during product development. In this paper, we will address hybrid modelling issues and take the gearbox model as an example to illustrate how to model gearboxes from a Systems Engineering perspective. A supervisor and supervised model structure is investigated that could also be regarded as a use case to a general cyber-physical modelling approach. The resultant model achieves the same output as the LossyGear model in Modelica Standard Library.


Hybrid model, Gearbox, Loss power, Cyber-physical


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