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Control Aspects Of Complex Hydromechanical Transmissions

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Control Aspects Of Complex Hydromechanical Transmissions

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Author : L. Viktor Larsson
language : en
Publisher: Linköping University Electronic Press
Release Date : 2017-08-17

Control Aspects Of Complex Hydromechanical Transmissions written by L. Viktor Larsson and has been published by Linköping University Electronic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-17 with categories.

This thesis deals with control aspects of complex hydromechanical transmissions. The overall purpose is to increase the knowledge of important aspects to consider during the development of hydromechanical transmissions to ensure transmission functionality. These include ways of evaluating control strategies in early design stages as well as dynamic properties and control aspects of displacement controllers, which are key components in these systems. Fuel prices and environmental concerns are factors that drive research on propulsion in heavy construction machinery. Hydromechanical transmissions are strong competitors to conventional torque-converter transmissions used in this application today. They offer high efficiency and wide speed/torque conversion ranges, and may easily be converted to hybrids that allow further fuel savings through energy recuperation. One challenge with hydromechanical transmissions is that they offer many different configurations, which in turn makes it important to enable evaluation of control aspects in early design stages. In this thesis, hardware-in-the-loop simulations, which blend hardware tests and standard software-based simulations, are considered to be a suitable method. A multiple-mode transmission applied to a mid-sized construction machine is modelled and evaluated in offline simulations as well as in hardware-in-the-loopsimulations. Hydromechanical transmissions rely on efficient variable pumps/motors with fast, accurate displacement controllers. This thesis studies the dynamic behaviour of the displacement controller in swash-plate axial-piston pumps/motors. A novel control approach in which the displacement is measured with an external sensor is proposed. Performance and limitations of the approach are tested in simulations and in experiments. The experiments showed a significantly improved performance with a controller that is slightly more advanced than a standard proportional controller. The implementation of the controller allows simple tuning and good predictability of the displacement response.

Conceptual Design Of Complex Hydromechanical Transmissions

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Author : Karl Uebel
language : en
Publisher:
Release Date : 2017

Conceptual Design Of Complex Hydromechanical Transmissions written by Karl Uebel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.

Design Automation Of Complex Hydromechanical Transmissions

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Author :
language : en
Publisher:
Release Date : 2013

Design Automation Of Complex Hydromechanical Transmissions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

Control Of Hybrid Hydromechanical Transmissions

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Author : L. Viktor Larsson
language : en
Publisher:
Release Date : 2019

Control Of Hybrid Hydromechanical Transmissions written by L. Viktor Larsson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.

Hydrostatic And Hydrodynamic Transmissions

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Author : C. M. Edghill
language : en
Publisher:
Release Date : 1977

Hydrostatic And Hydrodynamic Transmissions written by C. M. Edghill and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Technology & Engineering categories.

Control Aspects Of Hydrostatic Transmissions With Sequence Controlled Motors

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Author : Mikael Sannelius
language : en
Publisher:
Release Date : 1995*

Control Aspects Of Hydrostatic Transmissions With Sequence Controlled Motors written by Mikael Sannelius and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995* with categories.