Reliability Modeling of CNC Machine Tools Hydraulic System based on GSPN Model

Zhiyao LI1, Tiantian XU1*, Jie YU2

1Mechanical manufacturing and automation, Changchun University, Changchun, 130022, China

2Mechanical and electrical engineering, Changchun University, Changchun, 130022, China

Abstract: Traditional reliability modeling method cannot describe the system state in the process of dynamic change. The paper puts forward a modeling method that based on Generalized Stochastic Petri Net (Generalized Stochastic Petri Net, GSPN) on the basis of the thorough analysis. This paper introduces generalized stochastic Petri nets to dynamic reliability modeling of CNC machine tools. Express to delay change failure and maintenance of CNC machine tools. Based on the CNC hydraulic system as an example, analyzed the change of dynamic hydraulic system failure process.

Keywords: Generalized stochastic Petri nets; CNC machine tools; Hydraulic system; Reliability