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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,
' Z/ ]  s% [. X9 c0 P  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 F) ^9 o2 v) r9 K2 V. q' ]2 ^  Loads are processed by each operator for the following time:" C" Z& Q! A0 N' }+ B
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 o! ^, W$ ^6 T# K. R9 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.
; w; n4 G: S3 w6 H$ |  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* I2 v4 _3 E* N2 @
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.( c9 R. x+ h7 e
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问题:3 B3 l1 D; ^% F1 ]9 Q
After running the model for 10,000 days, what was the average number of loads in each process?. C( P2 l( Y, C/ e, H' \6 j: i; |

- F" {; k7 m# c) M8 G: G# u6 R不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving" l. d* _* l' b
move into Q_wait /*Capacity is infinte*/
" B+ \7 v; v- D) s: G) emove into Q_process /*Single capacity*/
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# ~; L2 o' a; z( [use R_A for n 60,10 min /*Resource A*/
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0 H7 _: m& J' W" asend to P_B
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9 b% c0 f7 u1 B$ ]P_B and P_C is similar+ K! M3 B. b( z2 l
triangular 30,60,90 min8 K" i  j( s  C; ?& f2 v
u 60,30 min
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in P_C, you need to send to die.% T! [! ^3 s& R$ C" `; e3 q* e% ?
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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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9 `6 r9 w, P1 \: P/ z( }: \8 f( URemember 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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