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Design Optimisation Strategies for a Hydraulic Hybrid Wheel Loader

[+] Author Affiliations
Karl Uebel

Volvo Construction Equipment, Eskilstuna, Sweden

Henrique Raduenz, Victor Juliano de Negri

Federal University of Santa Catarina, Florianopolis, Brazil

Petter Krus

Linköping University, Linköping, Sweden

Paper No. FPMC2018-8802, pp. V001T01A001; 11 pages
  • BATH/ASME 2018 Symposium on Fluid Power and Motion Control
  • BATH/ASME 2018 Symposium on Fluid Power and Motion Control
  • Bath, UK, September 12–14, 2018
  • Conference Sponsors: Fluid Power Systems and Technology Division
  • ISBN: 978-0-7918-5196-8
  • Copyright © 2018 by ASME


This paper deals with design optimisation of hydraulic hybrid drivelines during early concept design phases. To set the design parameters of a hybrid driveline such as gear ratios, pump/motor displacements and size of energy storage, the energy management of the hybrid machine needs to be considered as well. This is problematic since a nested design and control optimisation normally requires substantial computer power and is time-consuming. Few previous studies have treated combined design and control optimisation of hydraulic hybrid vehicles using detailed, non-linear component driveline models. Furthermore, previously proposed design optimisation methods for on-road vehicles are not suitable for heavy off-road machines operating in short repetitive cycles with high transient power output. The paper demonstrates and compares different optimisation approaches for design and control optimisation combining deterministic dynamic programming and non-gradient based numerical optimisation. The results show that a simple rule-based energy management strategy can be sufficient to find the optimal hardware design even though non-optimal control laws are used.

Copyright © 2018 by ASME
Topics: Design , Optimization , Wheels



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