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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,
5 d% i  q. @; \! Q- V6 p6 e; S  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.
' Z9 V  L' Z! |; T  Loads are processed by each operator for the following time:
5 L' e, P& j7 {5 b  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 Z7 e4 s$ M) o& }) L8 a6 v  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.) B* |4 d7 p; X) s8 Z0 O
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.% y: |& C9 j8 K" v* }
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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问题:- S. G% s/ D3 t5 H: E+ K; ?
After running the model for 10,000 days, what was the average number of loads in each process?( q; B  i) P3 U0 R

6 i$ d6 t: f0 X* b" p; Z7 O不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
4 A9 B* i8 M$ n& T, a' h" {  Mmove into Q_wait /*Capacity is infinte*/: m1 {5 A  A7 ?$ `4 c) k1 ]+ d! X
move into Q_process /*Single capacity*/9 C$ H5 I% s* ?# P  @# ?
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use R_A for n 60,10 min /*Resource A*/
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' v" c9 W. |0 z- @2 _& l; s; Q+ u5 M0 Nsend to P_B) M# H8 |  n5 Z- i7 g
end7 V9 C: q$ U* y% l( e5 [

  z* A3 ^# r/ OP_B and P_C is similar' P4 N( y3 f: N2 m; M& {
triangular 30,60,90 min+ e: g& q( \, c0 ?# ^
u 60,30 min
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; v+ c: A7 a0 c+ n" min P_C, you need to send to die.. y1 G8 w4 X: w1 o: b% s: [
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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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