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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,/ X* C4 N7 G+ G. p
  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.
! N% J8 {2 _; c3 T  Loads are processed by each operator for the following time:
! U4 m  O: |1 a3 J8 ~' E* b  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.7 N3 G- v# G" {
  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.% o+ U& |1 Z! S7 S, R: c0 n1 ^) N" |
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; r; F4 b% e. k, |- x: L$ CSend 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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9 O) `+ M' Y% w$ i0 u! H问题:$ J' |, j. H6 _
After running the model for 10,000 days, what was the average number of loads in each process?* g, k" \  z% q7 ]( T$ a- P4 L
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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
( n5 o& R# _+ ]4 qmove into Q_wait /*Capacity is infinte*/" x8 V9 l! Z: _" }
move into Q_process /*Single capacity*/
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8 G" m) L( Q* o( L" H" |7 Quse R_A for n 60,10 min /*Resource A*/* z+ P; c3 l* }5 ~5 I! N2 e

, t7 N/ Q" F1 i" ]; B; `$ b7 d5 zsend to P_B
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P_B and P_C is similar3 b$ y3 f- {- u+ s
triangular 30,60,90 min
: G1 \3 S5 [+ i" du 60,30 min1 F7 k, L  ?1 x/ z8 F& c5 k3 Z. [! o. P

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in P_C, you need to send to die.7 _% f( `) e  e9 F, V

# m8 [$ Z5 {. O( G  F/ fThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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