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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,/ q- ?- O* z% C5 f8 V' }8 [
  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.
4 w- |" {) f* m3 ?* x  Loads are processed by each operator for the following time:$ q0 L) A7 R* J
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- I* J% F8 p4 ]3 H# A  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 y1 M" d; T6 @' R% d
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., p" ^# `+ _7 B/ V* {. V5 t  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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问题:
4 B: Z. a" _" q* R  Y* g2 HAfter running the model for 10,000 days, what was the average number of loads in each process?0 o! J" U# W; _! u

. \. w! C3 C7 v' i( M- }+ C不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving2 s/ w+ H0 Z- o1 t
move into Q_wait /*Capacity is infinte*/, T: U7 U5 c% R1 S2 ]
move into Q_process /*Single capacity*/0 N6 b0 E% B( a$ |
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
) Z; W, x2 l5 n+ O9 ~end
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P_B and P_C is similar
! l3 V9 D9 f5 m8 P" U2 v( i& O' W1 itriangular 30,60,90 min$ C$ V: s3 k$ p+ R& m* n3 X- i
u 60,30 min% @3 i' u0 x2 v: J8 a5 `+ u
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in P_C, you need to send to die.
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! K4 O/ t, [! E2 NThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.8 T" P3 h/ v+ x3 M, c$ x

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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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