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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,
9 w0 z1 j7 d( Q8 H/ p; G* J  D5 g  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.
- I$ `! @/ z* D  Loads are processed by each operator for the following time:
, q: J! J: L0 F; G% y8 ]  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 g8 M% l$ R) ~8 K! Z: T
  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.
0 ?% q! i0 g9 I8 X  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.+ v2 _8 [# R6 B  c6 W/ ]: H
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.# w; a- B$ ~3 |# p: e

: l3 u' h( Y+ F$ x问题:
" ^" H4 x+ m  H$ q5 @* ^After running the model for 10,000 days, what was the average number of loads in each process?; T+ X( b: c: O8 Z1 d4 t2 O2 t8 m
9 \5 j$ i6 v1 t' e% ^  a
不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
' T( E) ~+ }# t4 ~" Y* Lmove into Q_wait /*Capacity is infinte*/) p. b- ]: {+ s! J  J: j7 i! g
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/- H; ^+ K) M9 N; r. A; A7 q3 k
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send to P_B
, T3 |, {) A! k1 o8 Lend
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& y$ h* u6 q) f+ cP_B and P_C is similar
6 d* v( y$ o* T- f2 j# L9 gtriangular 30,60,90 min
) f2 S  y- f/ p3 Zu 60,30 min
1 a% O& L; n9 W3 d0 w8 n2 Y2 Q4 E7 X$ V. l) l. Z% O+ z: b5 v* o

. L, J7 V$ I- c  O" W# G/ Xin P_C, you need to send to die.
7 Q' y+ V6 q' p8 j8 b. i- k5 y- F9 n& o- N! ^6 Y4 s5 ]0 H
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.- i% k) {2 J7 r# b- D# Q
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9 d* f9 F+ ~; t
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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