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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,, ?7 e: L3 l# v+ `  `: U6 j
  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.
* P2 t2 r1 s$ C4 H$ C  X1 H; u  Loads are processed by each operator for the following time:
, O3 \6 Z; D5 @9 L6 Y: o  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 J( A, Q# M, \  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.6 Z7 V% @# {& D2 Y1 J& R
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 c( n" a3 {/ }" T! I
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." _9 @0 z5 V, D7 L/ V
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问题:3 @/ {5 k2 X! o& _2 I/ E+ P
After running the model for 10,000 days, what was the average number of loads in each process?9 K6 X3 p$ R) Y4 @& w% z

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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
: F9 |6 L) k0 x, [8 p$ emove into Q_wait /*Capacity is infinte*/
% D) J" p8 k6 ?9 A  m5 R6 |7 pmove into Q_process /*Single capacity*/1 H8 e2 `5 O3 [& T* [, @& a
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use R_A for n 60,10 min /*Resource A*/
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# k0 n0 r1 L! k% `5 s  ssend to P_B: }/ q/ l$ w- ?% d! a/ p
end5 _; n- w: q  E0 {2 i
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P_B and P_C is similar7 N. Y  i, H, h# M
triangular 30,60,90 min5 T7 F$ _7 t6 r6 P
u 60,30 min
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in 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.5 P) _) P1 c7 A$ V2 A

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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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