TY - JOUR
T1 - Influence and Utilisation of Pressure Propagation in Pipelines for Secondary Controlled Discrete Displacement Cylinders
AU - Hansen, Rico Hjerm
AU - Hansen, Anders Hedegaard
AU - Andersen, Torben Ole
PY - 2012/11/29
Y1 - 2012/11/29
N2 - Efficient discrete force control of cylinders may be realised by having multi-chambered cylinders, where the pressure of the chambers are shifted between fixed pressure levels of a secondary controlled system. However, the pressure shifting on a volume where the dynamics of pressure propagation is negligible have been be proven to have an unavoidable minimum loss due to the compressibility of the fluid. This paper investigates the effect of the pressure propagation in the connection and concludes that except more complex shifting schemes are introduced, the minimum loss remains unchanged. The paper analysis however also demonstrates and suggests, that with a clever valve control and shifting scheme, increased efficiency of a shift is obtainable by utilising the pipeline inductance.
AB - Efficient discrete force control of cylinders may be realised by having multi-chambered cylinders, where the pressure of the chambers are shifted between fixed pressure levels of a secondary controlled system. However, the pressure shifting on a volume where the dynamics of pressure propagation is negligible have been be proven to have an unavoidable minimum loss due to the compressibility of the fluid. This paper investigates the effect of the pressure propagation in the connection and concludes that except more complex shifting schemes are introduced, the minimum loss remains unchanged. The paper analysis however also demonstrates and suggests, that with a clever valve control and shifting scheme, increased efficiency of a shift is obtainable by utilising the pipeline inductance.
KW - Digital Hydraulics
KW - Discrete Displacement
KW - Fluid Power
KW - Hose
KW - Pressure Propagation
KW - PTO
KW - Secondary Controlled System
KW - Wave Energy
UR - http://www.scopus.com/inward/record.url?scp=84871551124&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMM.233.72
DO - 10.4028/www.scientific.net/AMM.233.72
M3 - Journal article
SN - 1660-9336
VL - 233
SP - 72
EP - 75
JO - Applied Mechanics and Materials
JF - Applied Mechanics and Materials
ER -