The Research of Oil Pressure Fluctuation Influence to Rolling Mill Control Precision

摘要

Oil source made up of constant pressure variable displacement pump,accumulator,and pipeline is widely used to provide stable pressure for electro-hydraulic control system in practical engineering.Based on the experiment,the rehtionship between initial charging pressure & volume of the accumulator at inlet of the servo valve and control precision is analyzed in detail,and coupling rules between the load variation and the pressure fluctuations of oil-source are obtained,the rules can give reference for selecting initial charging pressure & volume of the accumulator according to the requirement of system control precision,which can further improve control precision and product quality byoptimizing equipment parameters.