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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,+ Y8 e% }- A8 G* M9 o
  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.
3 ]+ `2 Q0 {- G  Loads are processed by each operator for the following time:
$ C% i0 D8 o9 d% v7 Z% f  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
: d$ c/ P! Z, B* E3 p  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.
/ N3 h6 \$ C( f6 m2 C$ N9 {5 j  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 e1 w( Y/ z/ ?  L
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.  f% j" V) B& b  c; r; W
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问题:. m, }* t, j* u* I2 G# I
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, h2 [6 J& N3 d9 a
move into Q_wait /*Capacity is infinte*/
) @/ H2 k# o6 c$ |; H% ]move into Q_process /*Single capacity*/
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) k2 v/ J4 ]  ^% s6 {1 Ruse R_A for n 60,10 min /*Resource A*/6 d; ~& }7 g! [$ [8 e

, m% U3 P# w- M  c+ |% B5 Gsend to P_B
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$ D; B8 u! k: HP_B and P_C is similar7 Y2 L6 \. U3 m- |1 c
triangular 30,60,90 min
( z& e0 I! w4 \- T: h! Nu 60,30 min9 P+ w" F: J9 p2 ]0 T

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8 O0 ?* f/ f' Z6 R( }* }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.; {+ x7 l; |% @4 _8 M  Q+ `

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6 _$ R8 s- Y* n0 [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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