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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* }& U; {1 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.4 L+ b4 F: ^: V) D/ ^) m% V
  Loads are processed by each operator for the following time:6 w& T% b7 V  Z
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.* |; Y) i2 b% s/ c# A9 q6 o
  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.
/ {5 \! a/ W( o/ }0 l, K7 f  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 o' Z  M4 }: x2 E$ m' GSend 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.1 {9 o/ k9 E0 L1 M1 e

+ w! ~% s9 @$ F% e6 d. f8 S% i问题:
* d3 O2 p8 C4 S5 NAfter running the model for 10,000 days, what was the average number of loads in each process?: E- R8 D  n- ?  }6 R0 P4 s7 z

% f; f+ W$ _1 c8 l; B% p. Z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 G7 ]9 G( m3 X& t  C1 b4 F6 [2 G
move into Q_wait /*Capacity is infinte*/
4 |! P! n) u) N0 Z* S! ~; d6 pmove into Q_process /*Single capacity*/6 h9 s9 |. K) P. D
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use R_A for n 60,10 min /*Resource A*/8 ~$ p, A( o( |3 [+ ?7 l  R

3 n/ \, `9 w) f! }% fsend to P_B
& M4 f- e: h+ W9 y- X2 A0 nend! W. w; ~  q$ d% f, x: U
4 r: g7 h. [8 p3 ], K
P_B and P_C is similar
& c2 `9 F0 X# T( Z* L4 A; L2 z, {7 r5 K! itriangular 30,60,90 min
0 E$ L( N3 M8 G5 _4 i& {2 iu 60,30 min
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! Z; J- A/ J7 `' Y5 Y: D! Lin 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.
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$ d. I" q. K! A9 y9 q/ s
* `! F2 P8 w& M8 C+ U( j7 lRemember 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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