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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,
8 [8 Z; B/ L3 }0 `, c2 x  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.
3 z& |! t1 I. B  Loads are processed by each operator for the following time:
5 L+ y/ l' e% s3 z3 F( W  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
/ a4 a3 |2 h) {" L# ?. u  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.
* T% `% w$ B) M" l, o2 |  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
) ]4 s1 P# d! N' {3 k# FSend 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.
' X$ D. G8 L, D1 z: k9 e' R) `
8 k- b4 L9 J5 r* W* _( g2 M问题:
0 e& Q) C( ^/ q' z: |  yAfter running the model for 10,000 days, what was the average number of loads in each process?  @( Q  r: S! m

6 S1 `( f0 N' t' `不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 M4 H) ?9 u- B0 x" z
move into Q_wait /*Capacity is infinte*/
3 N- ^5 @4 v* O3 s: A. `- cmove into Q_process /*Single capacity*/
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- f# k4 r  T" @2 {% g8 |& cuse R_A for n 60,10 min /*Resource A*/
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send to P_B1 |4 s5 O* b! w3 |  j
end
/ C# e9 D1 r# ?& ~: S/ a9 h+ b% x9 \$ Q+ V0 ?) e4 S7 B) \! u
P_B and P_C is similar
/ z3 Q! T* D& B( P3 c! m7 etriangular 30,60,90 min: @* p7 U: {8 {5 V; C9 A
u 60,30 min
* J0 T1 Z% {! p6 X1 S' X% b0 o1 ?  G/ V6 t0 i+ x& ]% N

+ e! i4 K% \+ P/ E: ]in P_C, you need to send to die.
* E9 V2 t2 ]0 D" c5 F# ?( _/ s
. p' H2 j0 ~3 Y' kThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days./ ~5 Z6 d* S1 C. `

: [$ z6 t) _+ H5 N( ^  w; T" G# w" p3 ~' v  V" V9 T' x
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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