Systems, in which one service unit supervises some operators, are widely used in the textile industry. It is important to analyse the behavior of such systems, but their analyses are difficult because of their complicated constructions. We select the full-automatic winder as an example of such systems and, by using Monte Carlo simulation method, we try to analyze its behavior in relation with system parameters.
Some of results obtained are as follows :
1) If η_N, the operation efficiency of the system in which one service unit supervisesNoperators, is defined as follow,

η_N=Total amount of the actually wound un yarn/Estimated total amount of the wound up yarn
without yarn breakages
η_N has the transient behavior in the exponential way and has a limit value in the steady state.
2) As the numbers of operatorNbecome larger, the service time has a great influence on the value of η_n, η_N in the steady state becomes smaller and the sensibility of the system becomes low.
3) The relation betweenNand η_N nearly can be expressed as the following formula
η_N=η^N₁ or e^-NP
where p≅1-η₁
However, in the case ofN=1, the simulated value of η₁is smaller than estimated η_N

抄録全体を表示