An Interval Parameter Mutistage Stochastic Linear Programing Method for Hydralic Contamination Control
Xiong Zhibin · Machine Tool & Hydraulics · 2008
According to unexpectable variety of contamination levels in the fluid power system,an interval-parameter multistage method was introduced to handle with the problems of system designing and maintaining through multi scenarios and probability dense functions(PDFs) based on a typical existing interval-parameter model.Principles of multistage stochastic linear programming were applied to revise the expression of contamination ingressing/generating rates in existing model.In that way,independent ingressing/generating rates turn to be a set of values associated with PDFs.Joined by PDFs,new method effectively describes variety principle in practical system running.Compared with the result of a single interval-parameter method,the result of an advanced technology agrees with the principles of PDFs,which solidly substantiates the new method.