Dynamic Stochastic Modeling in Single Unit Job Lot Fabrication of Vehicle Components Assembly Test
The fabrication mode of vehicle components assembly tester belongs to single unit job lot production, with single quantity and mass operations. In order to produce them with high efficient and low cost, the resources configuration method plays an important role. The fabrication simulation model using a dynamic stochastic function is set up. First, the stochastic factors, including uncertainties of production task caused by market variety, production duration caused by design modification and production process caused by resource configuration diversity, are described with the change of production operations. Then the dynamic stochastic model of production process is set up on the basis of the transition probability matrix, preparation time and flexible time. As an example, the application method of this model for the synchronous fabrication process of drive axle performance tester and running tester is investigated. The results show that this method can be used for the planning and evaluation for the complex equipments fabrication within specified period.