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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,9 r5 k( A! j+ k  |
  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 Z* ^8 k7 w6 k9 w6 E4 K' x
  Loads are processed by each operator for the following time:1 m2 i0 L2 \  I+ G) e$ C/ n
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.9 b5 ^( i" o0 c) Q& H! P2 u
  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.
- v1 d- E# G' r& \0 T6 g& O  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.7 M* I: h. Y9 a
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:- x$ q: n: r7 A/ d9 k
After running the model for 10,000 days, what was the average number of loads in each process?# m9 Y* t5 X7 @$ [+ l1 q& h
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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 arriving, S1 V, M8 L/ A/ v& x
move into Q_wait /*Capacity is infinte*/
! C9 s0 F" `: W  {8 E- q) {6 q5 dmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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% z/ {0 L9 M! k. A) qsend to P_B
* }" v3 M2 W. z; M" ]0 {; |# Iend# N; y% V: A- e7 o$ i

8 U7 h! q$ l& [' mP_B and P_C is similar0 e$ {5 j5 [3 T: p. Q
triangular 30,60,90 min7 t6 @6 \, [' L+ U& w
u 60,30 min2 n* M/ p  |0 a$ F# M

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& x3 ]: N, ?2 ^! xin 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.% q! |/ c9 l0 y/ S# f2 n1 n

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3 {* ~  z( r  l, i4 C- t# jRemember 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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