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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,
7 O' ?/ _- O9 X/ j' Q  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., j0 a) ]& _# u
  Loads are processed by each operator for the following time:
: a+ E3 F6 |8 Q2 L  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.5 e" e# C9 y6 |8 r
  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.
1 j6 _3 x+ T$ c2 L( W( u  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# r7 m4 Q; V# qSend 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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问题:$ N1 F# F: U, W( q! S, F* ^& `; A+ n% _
After running the model for 10,000 days, what was the average number of loads in each process?
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; O$ ]% y+ ?! U% S$ B不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
: {/ {( ]% [: D6 G: ~# ~% lmove into Q_wait /*Capacity is infinte*/% z9 w; [! p% v$ p+ Z$ q) W5 `; Y3 n
move into Q_process /*Single capacity*/
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2 U3 N1 Y9 d! y+ s2 juse R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar
6 i8 m4 \, _- S) `- U& ftriangular 30,60,90 min+ R1 D2 o7 |$ p- x
u 60,30 min1 Z$ r3 p4 V, p) E: }& r) j- c
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in P_C, you need to send to die.. V7 j$ n+ f$ c: p& e; R0 l

  ~8 p- ?. u- }0 k  w: N4 T; pThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days./ V/ U2 a% C$ l/ d! u
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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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