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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,( t+ h% p3 W9 w) I
  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.
$ V. C/ F* }- n; ^2 y% H: ]) `  Loads are processed by each operator for the following time:
: ~& d& s0 P: y1 w8 I8 {  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# i# @5 D+ @( ?9 R  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.2 Y: O5 e# S6 H5 q- C6 w
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
" `; d# ^5 a3 H; j# [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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' D5 s5 O$ |; \2 \" I问题:+ B" d. a4 d- j# C! r1 l# |
After 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 arriving0 R, O3 ~9 A( M5 Y2 Y
move into Q_wait /*Capacity is infinte*/0 A) c$ W' Y  w" ^
move into Q_process /*Single capacity*/) l% r! E' C" Q+ d% ?
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use R_A for n 60,10 min /*Resource A*/7 ~$ t/ m. A6 ^

8 m7 F3 _% C- i5 g1 p! x8 L% x( _0 `send to P_B
6 b7 ?) h9 \2 B6 `6 d7 qend0 L0 O) h0 _2 i4 i
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P_B and P_C is similar
& k5 C1 j* \. K. P" n8 [triangular 30,60,90 min+ k5 w2 _" y) O# _
u 60,30 min
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  Y, {' y( y6 `  win P_C, you need to send to die.9 i, V% `  i( Y6 x- L0 V

0 ~3 T0 {# B5 q1 o- H7 aThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.* p6 p/ f4 ~, {# z

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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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