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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,' D0 h! m( X9 k2 D. ?" k: e
  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.
( J5 b( ?1 `/ V: g+ Q$ |  Loads are processed by each operator for the following time:
; U# S3 ]. W3 W3 J0 b9 B! u/ {  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 N+ M8 M0 c  W: X# Y7 j6 C/ g' n  N
  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 B2 t9 @; U$ l& K5 R  L
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.% i9 h& U/ \; t; E- j9 X+ E
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:
2 F4 U6 O5 y; WAfter running the model for 10,000 days, what was the average number of loads in each process?( i* b% o  d0 E$ C% ^" D$ p- }

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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
& s9 a  V* z4 ^* b7 I0 Nmove into Q_wait /*Capacity is infinte*/: x+ A% o  q0 l2 Y6 p( G
move into Q_process /*Single capacity*/
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; z7 t. C' u7 `+ u  v8 k- @9 F. _+ muse R_A for n 60,10 min /*Resource A*/
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send to P_B
' A3 V4 I' ~# G/ ~end
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1 X9 Z2 p8 X$ j2 I; yP_B and P_C is similar
5 x: Z" V+ _/ r! R* N! wtriangular 30,60,90 min
6 q/ k/ _5 @5 V. ?( k: lu 60,30 min* C+ |' e+ O6 L  k' A& m( ~

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) K5 d, g: x" e3 |in P_C, you need to send to die.3 y+ g  t& P8 s- \" V
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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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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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