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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,1 X* I6 D, m. l" s5 T( u
  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.
  P; c, z  o" l" C, @  Loads are processed by each operator for the following time:
/ `7 L5 y2 v7 e  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; d3 `2 b, a" y3 z! }  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.
9 F- \' Q( u' m  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
( Z6 i; B; z1 \3 ASend 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.' [6 \& c/ Q* R3 n. y5 R  ~

# A$ T( n3 k, _. U' O- U1 H问题:7 m+ L1 v3 H* ?6 M/ ~
After running the model for 10,000 days, what was the average number of loads in each process?4 j  S- L# Z  y; K4 |

; Z- e" k% N8 n/ Y; l/ J不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ U& V1 F5 u5 P$ t
move into Q_wait /*Capacity is infinte*/# _* i% [7 j9 V; N( H( a$ ~
move into Q_process /*Single capacity*/
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3 l/ [% Q! ^) q, uuse R_A for n 60,10 min /*Resource A*/
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+ Q1 R$ ^/ t; J$ z; Wsend to P_B
  C# u$ p: V6 n/ r1 N$ s8 }8 ~/ Xend; Y7 l- B& O; K
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P_B and P_C is similar6 a% v; o+ U% U; h8 `
triangular 30,60,90 min! O  o% i6 U% s* f
u 60,30 min
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4 _$ I5 c# y/ T) X9 O: Lin P_C, you need to send to die.+ }  r8 L9 h0 e/ m
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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.2 R1 C' S4 h4 y2 j* w' o

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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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