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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,
3 O: J- x* L' C8 O  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.0 c! I0 q, k7 z' F% Y
  Loads are processed by each operator for the following time:
7 [* ~! O& B4 w. s  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! a; J$ W- W1 R* @( t& P  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.
) c. |4 S& X, D9 S& `/ p9 N; O  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
0 P4 C9 I# C+ `1 ?' 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.6 n* v7 H" i& L$ f
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问题:3 N2 ^) W. X$ i1 O# o( j0 t
After running the model for 10,000 days, what was the average number of loads in each process?
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$ ~4 r" ?# x4 `; S# n不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
& ]! R  s3 z- B4 a) |+ zmove into Q_wait /*Capacity is infinte*/2 S6 M$ k! I$ o2 S
move into Q_process /*Single capacity*/; R7 M" ?9 v) ~$ C
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use R_A for n 60,10 min /*Resource A*/8 B& H0 Q$ q4 t, s

% B% S& q5 a0 E8 t0 K1 rsend to P_B0 {+ y- |/ x, a4 l4 {/ [
end
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! ]. G/ {$ L* X/ C- S0 NP_B and P_C is similar
2 E% h6 [6 y+ `3 ?0 Y. ^triangular 30,60,90 min
3 _( v$ ]# A& P# j8 B- u4 ^$ Wu 60,30 min
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4 a; g8 \% K$ P7 x& {in P_C, you need to send to die.) x' q6 n9 B& ]) [
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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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8 {6 D/ `( g* K6 T* H: vRemember 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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