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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,
* r4 g) C- r* i" x  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.0 |2 L3 E7 x. y1 p' @
  Loads are processed by each operator for the following time:
" Y) |2 b' k5 P, ~* h  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." d) Y  a. o2 H. z$ `) 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.* Z) U; k$ J: _) f( t; `
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.7 u; `, |' C/ b0 s1 c- R* G# a( t% {
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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4 W! u- v) @" }; D" c问题:
4 R6 X$ Q+ w  ~) SAfter running the model for 10,000 days, what was the average number of loads in each process?# Q9 q& C9 k( ~3 |1 a
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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 arriving2 w4 H, s; G3 q: \! X/ p  q
move into Q_wait /*Capacity is infinte*/& v; c! U; T6 C  e* n
move into Q_process /*Single capacity*/! y2 v/ q8 N; x
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use R_A for n 60,10 min /*Resource A*/
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; b- {0 H  Y9 I1 a: @* vsend to P_B
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P_B and P_C is similar
. n$ t' u, Y  d9 j: V$ f* ftriangular 30,60,90 min
: ]5 h+ i5 E( F4 Gu 60,30 min
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; f/ @: A- B" x- |% lin P_C, you need to send to die.* y% t! q% j$ z: m) k
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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 i2 J+ @  P( Q4 d
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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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