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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,* `! h5 J9 {; x2 E& s
  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.
  r8 p# f$ p+ \  Loads are processed by each operator for the following time:
0 s  v  Y# ~, s7 o) Y6 I  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
/ l. \3 t9 ?7 ?( U' i- f  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.
! f. `. H4 t5 \  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& {) C) r/ o$ Q# F5 O
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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/ Z7 ?6 C: i7 i, F- B% K问题:* s( ~% O6 P& S( s
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 arriving1 R6 ]# B7 {% m7 l9 S% D7 |
move into Q_wait /*Capacity is infinte*/
, O0 G% J8 j; j6 M! kmove into Q_process /*Single capacity*/3 X4 H3 j3 t- ]5 k( L
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use R_A for n 60,10 min /*Resource A*/( o: q0 L# n. z% e3 z' n
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send to P_B
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P_B and P_C is similar
: k9 Q  p7 n6 i2 s' ttriangular 30,60,90 min- y6 x1 V+ b- H; f6 V+ b: k
u 60,30 min* J& ?8 L% w; k( @3 t  I: e; r. r6 d

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+ g7 M0 w' S) q. kin P_C, you need to send to die.
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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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" A/ _/ [4 x4 @% u7 nRemember 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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