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[求助] 本人初学auto mod,有一道题目希望大家赐教

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发表于 2009-10-3 15:08:34 | 显示全部楼层 |阅读模式
刚刚开始学auto mod,这道题目搞不明白,希望大家看看 题目是这样的,  L1 p" F7 F, a' \" w* \
  Create a new model containing three independent processes, each with one operator. In each process, loads first move into an infinite capacity waiting queue, then into a single-capacity processing queue.) d- ?7 C6 Y, I2 _
  Loads are processed by each operator for the following time:$ K1 h1 u& H5 F' r% G
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. u. ^0 k; ]2 Z" G8 x1 o( B' ~  Worker_B does the job according to a triangular distribution with a min of 30 mins, most likely value of 60 mins, and a max of 90 mins.
7 \( ^- M3 Q8 Y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.! |& `' E* c5 C+ b
Send loads to each pocess at the same rate (an exponentially distributed inter-arrival time with a mean of 68 mins) to understand the difference in the processing times of the three workers.
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5 o6 y3 L2 E& a* P问题:
# z5 N9 g" L  d1 A& z$ _+ q( UAfter running the model for 10,000 days, what was the average number of loads in each process?; K# k* r" s! l( E( V" [
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
- S* v1 N  T$ R8 qmove into Q_wait /*Capacity is infinte*/
# k1 P: j! t2 u; i/ [6 a/ Tmove into Q_process /*Single capacity*/2 i8 J& L4 g, D, U) ?* [- x- [9 Q

$ y1 \, t0 K' p4 Q( uuse R_A for n 60,10 min /*Resource A*/' b: b, J2 O* Z3 R% l6 H$ l# [! H
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send to P_B- s) K7 L$ M, T4 H
end
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* r4 L3 a# M1 F3 `" a. cP_B and P_C is similar# _# u! u5 w6 B9 D
triangular 30,60,90 min$ c+ f4 J9 |9 ~+ }5 A/ \
u 60,30 min
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in P_C, you need to send to die.
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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Remember to turn off the animation before you run your model.

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 楼主| 发表于 2009-10-27 23:53:02 | 显示全部楼层
thanks...
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