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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 _# ~. X9 S8 f% Z) n  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.9 D: f( i; A" l3 H4 w
  Loads are processed by each operator for the following time:
7 x% L0 G& S. B" {: ~) n8 ?/ n7 s  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& ]9 u3 ]8 n6 S
  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.: X; m# Y( C# D7 P. W
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 k! u6 a+ e/ Q9 T
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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: h8 W( N- N$ F2 l5 o) ^问题:2 d6 u3 O- h" Q7 V3 n& w5 V& N* F
After running the model for 10,000 days, what was the average number of loads in each process?6 N9 a2 w" X6 P
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ S5 x0 s* q( q! N6 @" r7 U
move into Q_wait /*Capacity is infinte*/
; n5 i: o# N6 a7 s' w5 Rmove into Q_process /*Single capacity*/
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. ^$ I' G$ z1 u- q" C; w% Xuse R_A for n 60,10 min /*Resource A*/
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% K6 s- U' ?8 I# w4 ^( s" W2 t0 r  Nsend to P_B7 B9 s- I8 k$ N, t1 E( k
end2 z: j) o: U8 ], Q2 N

+ w9 p, i5 h8 L% ]( YP_B and P_C is similar
3 G5 v4 {3 l1 z2 x1 R4 J* Ztriangular 30,60,90 min
1 [5 Q" F6 E) `* P& k- v! xu 60,30 min
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! d% Q' h" y4 B& y* S3 [in P_C, you need to send to die.' ^7 D+ w5 Q" V! f. G3 ]+ y

$ c5 ~# n; b' a& f5 `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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8 E( b4 r0 [+ q3 k7 M1 l4 b; XRemember 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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