Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Matti Pietola"'
Publikováno v:
Actuators, Vol 9, Iss 1, p 12 (2020)
This paper investigates energy efficiency and dynamic behavior through simulation and experiments of a compact electro-hydrostatic actuator system (EHA) consisting of an electric motor, external gear pump/motors, hydraulic accumulator, and differenti
Externí odkaz:
https://doaj.org/article/3f40ffb6f9d947f8a7de0e9bd64f2d24
Publikováno v:
Energies, Vol 12, Iss 8, p 1538 (2019)
In this experimental study, a Direct Driven Hydraulics (DDH) system of the closed circuit type was utilized for cyclic vertical actuation in heavy load material handling. The actuator was controlled by a speed-controlled fixed displacement pump. The
Externí odkaz:
https://doaj.org/article/5e39038b221140dcb9a8e268e0a48a25
Publikováno v:
Energies, Vol 12, Iss 2, p 219 (2019)
Direct driven hydraulic drives (DDH) have the advantages of compact high power density in hydraulic systems and flexible control of electric motors. These advantages can benefit non-road mobile machinery (NRMM) applications. However, maintaining high
Externí odkaz:
https://doaj.org/article/6129a5271cdf4794964c21da9be76b46
Publikováno v:
Energies, Vol 11, Iss 8, p 2088 (2018)
This paper investigates the effect of extra weight caused by the Direct Driven Hydraulics (DDH) in a micro-excavator. These projects are investigating the implementation of zonal or decentralized hydraulics for non-road mobile machinery (NRMM) and st
Externí odkaz:
https://doaj.org/article/d63ce3a9deaf44ffb1055c4f081cd3ce
Publikováno v:
Journal of Vibroengineering, Vol 21, Iss 7, Pp 2000-2007 (2019)
At present, a study on the end corrections of extended inlets and outlets of expansion chamber gas mufflers is relatively mature. However, such a research for an expansion chamber hydraulic suppressor has not been made yet. A coaxial and a non-coaxia
Autor:
Robert Hermansson, Ville Närvänen, Jyrki Kajaste, Olof Calonius, Matti Pietola, Petri Kuosmanen
Publikováno v:
ASME/BATH 2021 Symposium on Fluid Power and Motion Control.
In this research the energy efficiency of a pump controlled direct driven hydraulic (DDH) system is experimentally tested and analyzed. The test bench uses two cylinders’ cross-connection to rotate the middle joint of the 5-meter-long pivot arm whi
Publikováno v:
Actuators, Vol 9, Iss 1, p 12 (2020)
Actuators
Volume 9
Issue 1
Actuators
Volume 9
Issue 1
This paper investigates energy efficiency and dynamic behavior through simulation and experiments of a compact electro-hydrostatic actuator system (EHA) consisting of an electric motor, external gear pump/motors, hydraulic accumulator, and differenti
Publikováno v:
IEEE Transactions on Transportation Electrification. 4:684-693
An integration of an electric motor and a drive with wide-bandgap (WBG) devices possesses numerous attractive features for electrified and decentralized actuation systems. The WBG devices can operate at a high-junction temperature (>170 °C) with imp
Autor:
Vladislav Nenchev, Faisal Mokammel, Eric Coatanéa, Matti Pietola, Eric Blanco, Joonas Coatanéa
Publikováno v:
Systems Engineering
Systems Engineering, Wiley, 2018, 21 (6), pp.555-575. ⟨10.1002/sys.21461⟩
Systems Engineering, Wiley, 2018, 21 (6), pp.555-575. ⟨10.1002/sys.21461⟩
International audience; The quality of requirements is fundamental in engineering projects. Requirements are usually expressed partly or totally in a natural language (NL) format and come from different documents. Their qualities are difficult to ana
Publikováno v:
Progress in Additive Manufacturing. 4:55-61
The purpose of this article is to demonstrate that additive manufacturing is a viable method for producing counterflow heat exchangers that have a very high power to volume ratio. For this study, a heat exchanger with 144 flow channels in a checkerbo