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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,
' d9 S. ]0 Z' U; ?, S; c+ c  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.- x  \9 G" K) F, E9 R5 m
  Loads are processed by each operator for the following time:
* C( K/ u9 m0 B" W# v9 x# ]2 W! ?; N  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% K' K6 E* q0 M
  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.
$ Z9 k) k3 N8 X4 G. X: ?" Q* S  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.+ E7 m/ ]8 L% Q* G9 P' [
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:5 C' g2 f. y# u( {8 A! f1 f
After running the model for 10,000 days, what was the average number of loads in each process?
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' y/ x. Z& s+ z2 M# {# I. g不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
# B/ a0 O* e- D" Smove into Q_wait /*Capacity is infinte*/
' y. s8 b. d2 M! R2 T! m* r' emove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/) _  j7 ^, Q6 ?7 n; F- I

" s, y; P6 E- ^4 r+ Q. Y% bsend to P_B
9 `" j+ \5 N3 ^2 I; \0 zend
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& Z4 ]' v! i& EP_B and P_C is similar
/ b$ U. N5 q. ^* I3 ~- T1 v( e; btriangular 30,60,90 min) w6 f$ T5 L2 m2 u3 }$ ~3 X6 S! B0 v2 Q
u 60,30 min
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in P_C, you need to send to die.
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. C  L4 ~) X, G  C' ^& W) }+ CThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.6 a8 f6 l  s9 i# w

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' a$ w' {0 {( s0 C: TRemember 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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