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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 i7 x& d0 |6 J3 k0 k2 l
  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.5 [, ^" ?. r, P0 b3 U& L% g* b
  Loads are processed by each operator for the following time:! x: S, w% ?, y3 p- N3 s8 g+ U
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 u& D" ^+ {  p. K  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.
1 u+ T! X3 a5 l" i  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ ~+ w  ]* S! v
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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After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
( n8 u2 j& s7 A. d9 Bmove into Q_wait /*Capacity is infinte*/) h0 \6 @8 }9 Z
move into Q_process /*Single capacity*/
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& J6 \0 ^6 p: I4 I0 \use R_A for n 60,10 min /*Resource A*/! d& m3 @! G3 V1 {9 {, x/ k

! v% D  G" K5 S1 psend to P_B
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P_B and P_C is similar
5 g" P% M0 r( s* ktriangular 30,60,90 min3 @1 A( ]1 |4 y
u 60,30 min# @2 m5 y/ Y# H5 ^% Z- B
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* }3 i3 L7 J& E/ A# r8 Rin P_C, you need to send to die.
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2 i1 p! e; y1 y8 b% f5 v; XThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.  u* m7 f/ D3 d
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' N; D! O. ]9 O# T, z, \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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