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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,
1 J! \# i/ [5 k3 j9 W/ 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.
# O4 Q  V5 Q0 N: t4 Z' [) c1 k0 a1 A  Loads are processed by each operator for the following time:
8 p6 `  D2 K3 {$ d8 w  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.9 ]- G0 f& q% Z/ @% S0 O
  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.
9 T3 g3 L2 i9 p2 D. W6 g  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
2 ^2 R8 h+ M9 I1 f# z4 p  d; p  OSend 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.; k2 S+ o( K& J" i0 g; I
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问题:
8 `4 M7 }6 V, N  AAfter running the model for 10,000 days, what was the average number of loads in each process?+ j; E; X, k5 G. n$ e) {$ M1 W

- Q* `8 X; `# ?不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
; k& u, R+ ?) g" e; _1 r0 qmove into Q_wait /*Capacity is infinte*/9 m- P: \% O5 k* Z
move into Q_process /*Single capacity*/7 d  M2 F+ z& r1 Z7 d

% \' a: e9 @) d& ^" Z+ guse R_A for n 60,10 min /*Resource A*/. G2 e6 H7 U. Q+ S! `

4 v' V1 F2 ^: `1 r5 H8 ]send to P_B
& X, S" p& Z3 S9 Y8 bend& Y4 V6 {; x. ~/ g! D

' b( I6 [) f  _2 KP_B and P_C is similar& R. a& T% z* o9 {( z  A" z6 Q
triangular 30,60,90 min
0 \) h. i. t0 ~7 M6 ?u 60,30 min/ I2 ]5 R/ u7 `! j8 W9 X5 J/ [
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" k* P% `3 ?/ U5 B. t( ]) P' l
in P_C, you need to send to die.  H5 u" X5 W( ?9 E! O. I! y

* y  D" S% I4 V$ }, o7 Q; KThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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& v7 k- r! t) f0 J( f
0 {/ O! n- K" @* rRemember 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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