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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,, ~  H2 k# A5 r+ U
  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.
& v4 M' _. j: O2 x2 [4 K1 h  Loads are processed by each operator for the following time:0 C. A- e1 X2 r2 P; v8 j( M. I& @
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.' g8 s, m% x" Z- T4 G. O
  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.+ k( [" N4 D" h3 B9 z
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
, a: h- f8 U+ c4 \- mSend 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.3 t/ R/ t7 k+ M

9 y- [5 t- A- V+ C! E8 \8 V# j问题:$ ]% O/ x+ g1 |7 V; v
After running the model for 10,000 days, what was the average number of loads in each process?) U1 O; e& J, f; A
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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
+ e% ]+ b, g6 V# M8 e5 V; Nmove into Q_wait /*Capacity is infinte*// A* L& ?' d: M& [/ b' O
move into Q_process /*Single capacity*/! R$ O* h$ a/ o: A

: S2 Q, x; b- J6 z# D8 Y$ Cuse R_A for n 60,10 min /*Resource A*/
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send to P_B6 b; c8 k4 ~9 w6 v, t# L
end
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P_B and P_C is similar
" \! E" G2 m0 Ltriangular 30,60,90 min4 z) Y) w5 O, D& B. T2 W
u 60,30 min
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/ W5 P& S& \; E; t5 y! n3 @in P_C, you need to send to die.. U' Q1 h) f* i7 A5 Q* C/ @
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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.' s- @' e& T9 k7 ?' w2 ?1 x  j

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4 E( [1 E: I$ I( b7 kRemember 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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