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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 R4 G  y* P" T$ ?( r  \
  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.
( u* i, e8 e6 r( N" R, K% }5 v  Loads are processed by each operator for the following time:
2 k0 N, |  N  X; g% g( ^3 f: K$ @  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; c& [1 g( Q1 L  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.
; ]! S! ^3 S7 C9 Q6 V6 e  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.  n1 H  ^  u' G! s2 `
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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问题:
+ t& u4 u& \" m# S" dAfter running the model for 10,000 days, what was the average number of loads in each process?
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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' x: i0 ]$ x: ~7 J
move into Q_wait /*Capacity is infinte*/
1 E5 F1 n/ u9 X1 M& P0 A4 Umove into Q_process /*Single capacity*/
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' [9 Y& K. j! ?7 Q6 xuse R_A for n 60,10 min /*Resource A*/
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9 o+ l, l/ |( Lsend to P_B
  _( d1 E" p- N/ c% F1 |* cend
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P_B and P_C is similar8 c9 q  d6 Q+ \; R" ^9 Q
triangular 30,60,90 min; D% B0 O: z$ ]; x( u7 ]0 ?* r: z
u 60,30 min
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in P_C, you need to send to die.
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% s5 C8 Z, B  D8 G  o  BThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.7 T& h% O! s" @6 I* E$ m* U
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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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