Simulation of Utilisation of Pressure Propagation for Increased Efficiency of Secondary Controlled Discrete Displacement Cylinders
A key component of upcoming secondary controlled fluid-power systems for e.g.wave en-ergy is the implementation of discrete force control of cylinders by discrete variation of the cylinder displacement.However,as the discrete control is implemented by shifting between fixed system pres-sures in multiple cylinder chambers using or/offvalves,the energy efficiency of the performed shifts is essential for the total system efficiency.However,pressure shifting on a volume,where the dy-namics of pressure propagation in the pipelines is negligible have been proved to have an unavoidable minimum loss due to the compressibility of the fluid.This paper performs a simulation study,showing that an improved energy efficient shift may be implemented by utilising the pressure propagation in the line between valve and cylinder chamber.
Fluid Power Hose Secondary Controlled System Simulation Discrete Displacement Wave Energy PTO Digital Hydraulics Pressure Propagation
Rico H.Hansen Anders Hansen Torben O.Andersen
Department of Energy Technology,Pontoppidanstraede 101,9220 Aalborg East,Denmark
国际会议
重庆
英文
3-6
2012-11-10（万方平台首次上网日期，不代表论文的发表时间）