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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,
" {6 F! Q2 x" W0 B$ c3 D0 E5 T  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.# f0 B+ }$ P- l+ q) l( N
  Loads are processed by each operator for the following time:4 U6 M6 ?1 _( P2 B+ X& `
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.; X" ]* E! J3 ?- C
  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.8 K8 o  [  u7 C% b0 @0 B  l
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 E+ R! W7 _  h& iSend 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 }, t4 c) ^0 e6 LAfter running the model for 10,000 days, what was the average number of loads in each process?' _. v# H8 N( C% a' A' ^2 P1 s
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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
# E! }3 b4 v$ ?3 x7 ^2 R: q, ~6 t9 m0 Amove into Q_wait /*Capacity is infinte*/
: j* A1 K1 b/ U" Y. C+ Omove into Q_process /*Single capacity*/' w6 S1 S/ `& M2 W, g! [* a9 e0 m
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use R_A for n 60,10 min /*Resource A*/
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1 q7 L( Y' n5 i6 x1 P1 Z/ ?( jsend to P_B
4 C# M) W; K; m* @! d* yend! H% F8 m$ t# Z+ P. j5 v

4 L" G# ]$ b4 `! t0 ]0 eP_B and P_C is similar
6 B8 ~9 w$ c7 O9 i* h0 \; Vtriangular 30,60,90 min
1 Z7 U; K% r+ ?u 60,30 min
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in P_C, you need to send to die.5 @4 [7 ^' o" G& r5 F4 R0 y! q

4 B$ P- c& a" x. z$ @2 c2 D9 pThen 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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