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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,; e4 Y  R8 h# e( A
  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.( z3 p  C2 y6 ]; n
  Loads are processed by each operator for the following time:
3 X* o) ?" a; M6 L" e6 h- J. @  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.7 y& x6 m5 x$ x8 j8 }
  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.
3 j9 j) ]$ {5 n* g+ J  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( Z9 F* q. t0 f& Z- E
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.3 q  i  R% l. V7 u& H$ u" h2 r

) o2 M! Y7 b0 }' N- v问题:# T4 g5 \9 R& p* ?# d" s$ g0 T
After running the model for 10,000 days, what was the average number of loads in each process?3 ^5 }6 S; w$ A2 _4 M1 z
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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; Y# M9 ~. C3 [' y8 @* i' Z0 c
move into Q_wait /*Capacity is infinte*/
! }- |- `+ a! w6 _7 G1 H; @6 Ymove into Q_process /*Single capacity*/: \$ c8 X" Q- r# V. D# I

+ d5 D3 j2 D0 M/ y# R/ H7 Cuse R_A for n 60,10 min /*Resource A*/6 a8 R' A( C% Y5 {) g; p

6 a, O5 B8 i  _% J4 H; ksend to P_B0 c. A9 {  G# q! W( w! X6 T
end
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P_B and P_C is similar) I; s6 T7 @1 C; I# [5 }/ Z0 \) |
triangular 30,60,90 min8 B: V9 L. N% e1 @9 L
u 60,30 min
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0 Z2 m6 ]% N) ein 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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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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