Mobile Working Hydraulic System Dynamics

Name: Mobile Working Hydraulic System Dynamics
Rating: 4.052631378173828 (19 reviews)

Mikael Axin

sept 2015 · Linköping Studies in Science and Technology. Dissertations 105. raamat · Linköping University Electronic Press

4,1

19 arvustust

E-raamat

lehekülge

Hinnangud ja arvustused pole kinnitatud. Lisateave

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This thesis deals with innovative working hydraulic systems for mobile machines. Flow control systems are studied as an alternative to load sensing. The fundamental difference is that the pump is controlled based on the operator’s command signals rather than feedback signals from the loads. This control approach enables higher energy efficiency and there is no load pressure feedback causing stability issues. Experimental results show a reduced pump pressure margin and energy saving potential for a wheel loader application.

The damping contribution from the inlet and outlet orifice in directional valves is studied. Design rules are developed and verified by experiments.

A novel system architecture is proposed where flow control, load sensing and open-centre are merged into a generalized system description. The proposed system is configurable and the operator can realize the characteristics of any of the standard systems without compromising energy efficiency. This can be done non-discretely on-the-fly. Experiments show that it is possible to avoid unnecessary energy losses while improving system response and increasing stability margins compared to load sensing. Static and dynamic differences between different control modes are also demonstrated experimentally.

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Lugemisteave

Nutitelefonid ja tahvelarvutid

Installige rakendus Google Play raamatud Androidile ja iPadile/iPhone'ile. See sünkroonitakse automaatselt teie kontoga ja see võimaldab teil asukohast olenemata lugeda nii võrgus kui ka võrguühenduseta.

Sülearvutid ja arvutid

Google Playst ostetud audioraamatuid saab kuulata arvuti veebibrauseris.

E-lugerid ja muud seadmed

E-tindi seadmetes (nt Kobo e-lugerid) lugemiseks peate faili alla laadima ja selle oma seadmesse üle kandma. Failide toetatud e-lugeritesse teisaldamiseks järgige üksikasjalikke abikeskuse juhiseid.

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